1/* 2 * Copyright (c) 2012 Intel Corporation. All rights reserved. 3 * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. 4 * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 35#include <rdma/ib_smi.h> 36 37#include "qib.h" 38#include "qib_mad.h" 39 40static int reply(struct ib_smp *smp) 41{ 42 /* 43 * The verbs framework will handle the directed/LID route 44 * packet changes. 45 */ 46 smp->method = IB_MGMT_METHOD_GET_RESP; 47 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) 48 smp->status |= IB_SMP_DIRECTION; 49 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 50} 51 52static int reply_failure(struct ib_smp *smp) 53{ 54 /* 55 * The verbs framework will handle the directed/LID route 56 * packet changes. 57 */ 58 smp->method = IB_MGMT_METHOD_GET_RESP; 59 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) 60 smp->status |= IB_SMP_DIRECTION; 61 return IB_MAD_RESULT_FAILURE | IB_MAD_RESULT_REPLY; 62} 63 64static void qib_send_trap(struct qib_ibport *ibp, void *data, unsigned len) 65{ 66 struct ib_mad_send_buf *send_buf; 67 struct ib_mad_agent *agent; 68 struct ib_smp *smp; 69 int ret; 70 unsigned long flags; 71 unsigned long timeout; 72 73 agent = ibp->send_agent; 74 if (!agent) 75 return; 76 77 /* o14-3.2.1 */ 78 if (!(ppd_from_ibp(ibp)->lflags & QIBL_LINKACTIVE)) 79 return; 80 81 /* o14-2 */ 82 if (ibp->trap_timeout && time_before(jiffies, ibp->trap_timeout)) 83 return; 84 85 send_buf = ib_create_send_mad(agent, 0, 0, 0, IB_MGMT_MAD_HDR, 86 IB_MGMT_MAD_DATA, GFP_ATOMIC, 87 IB_MGMT_BASE_VERSION); 88 if (IS_ERR(send_buf)) 89 return; 90 91 smp = send_buf->mad; 92 smp->base_version = IB_MGMT_BASE_VERSION; 93 smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 94 smp->class_version = 1; 95 smp->method = IB_MGMT_METHOD_TRAP; 96 ibp->tid++; 97 smp->tid = cpu_to_be64(ibp->tid); 98 smp->attr_id = IB_SMP_ATTR_NOTICE; 99 /* o14-1: smp->mkey = 0; */ 100 memcpy(smp->data, data, len); 101 102 spin_lock_irqsave(&ibp->lock, flags); 103 if (!ibp->sm_ah) { 104 if (ibp->sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) { 105 struct ib_ah *ah; 106 107 ah = qib_create_qp0_ah(ibp, ibp->sm_lid); 108 if (IS_ERR(ah)) 109 ret = PTR_ERR(ah); 110 else { 111 send_buf->ah = ah; 112 ibp->sm_ah = to_iah(ah); 113 ret = 0; 114 } 115 } else 116 ret = -EINVAL; 117 } else { 118 send_buf->ah = &ibp->sm_ah->ibah; 119 ret = 0; 120 } 121 spin_unlock_irqrestore(&ibp->lock, flags); 122 123 if (!ret) 124 ret = ib_post_send_mad(send_buf, NULL); 125 if (!ret) { 126 /* 4.096 usec. */ 127 timeout = (4096 * (1UL << ibp->subnet_timeout)) / 1000; 128 ibp->trap_timeout = jiffies + usecs_to_jiffies(timeout); 129 } else { 130 ib_free_send_mad(send_buf); 131 ibp->trap_timeout = 0; 132 } 133} 134 135/* 136 * Send a bad [PQ]_Key trap (ch. 14.3.8). 137 */ 138void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl, 139 u32 qp1, u32 qp2, __be16 lid1, __be16 lid2) 140{ 141 struct ib_mad_notice_attr data; 142 143 if (trap_num == IB_NOTICE_TRAP_BAD_PKEY) 144 ibp->pkey_violations++; 145 else 146 ibp->qkey_violations++; 147 ibp->n_pkt_drops++; 148 149 /* Send violation trap */ 150 data.generic_type = IB_NOTICE_TYPE_SECURITY; 151 data.prod_type_msb = 0; 152 data.prod_type_lsb = IB_NOTICE_PROD_CA; 153 data.trap_num = trap_num; 154 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); 155 data.toggle_count = 0; 156 memset(&data.details, 0, sizeof(data.details)); 157 data.details.ntc_257_258.lid1 = lid1; 158 data.details.ntc_257_258.lid2 = lid2; 159 data.details.ntc_257_258.key = cpu_to_be32(key); 160 data.details.ntc_257_258.sl_qp1 = cpu_to_be32((sl << 28) | qp1); 161 data.details.ntc_257_258.qp2 = cpu_to_be32(qp2); 162 163 qib_send_trap(ibp, &data, sizeof(data)); 164} 165 166/* 167 * Send a bad M_Key trap (ch. 14.3.9). 168 */ 169static void qib_bad_mkey(struct qib_ibport *ibp, struct ib_smp *smp) 170{ 171 struct ib_mad_notice_attr data; 172 173 /* Send violation trap */ 174 data.generic_type = IB_NOTICE_TYPE_SECURITY; 175 data.prod_type_msb = 0; 176 data.prod_type_lsb = IB_NOTICE_PROD_CA; 177 data.trap_num = IB_NOTICE_TRAP_BAD_MKEY; 178 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); 179 data.toggle_count = 0; 180 memset(&data.details, 0, sizeof(data.details)); 181 data.details.ntc_256.lid = data.issuer_lid; 182 data.details.ntc_256.method = smp->method; 183 data.details.ntc_256.attr_id = smp->attr_id; 184 data.details.ntc_256.attr_mod = smp->attr_mod; 185 data.details.ntc_256.mkey = smp->mkey; 186 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { 187 u8 hop_cnt; 188 189 data.details.ntc_256.dr_slid = smp->dr_slid; 190 data.details.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE; 191 hop_cnt = smp->hop_cnt; 192 if (hop_cnt > ARRAY_SIZE(data.details.ntc_256.dr_rtn_path)) { 193 data.details.ntc_256.dr_trunc_hop |= 194 IB_NOTICE_TRAP_DR_TRUNC; 195 hop_cnt = ARRAY_SIZE(data.details.ntc_256.dr_rtn_path); 196 } 197 data.details.ntc_256.dr_trunc_hop |= hop_cnt; 198 memcpy(data.details.ntc_256.dr_rtn_path, smp->return_path, 199 hop_cnt); 200 } 201 202 qib_send_trap(ibp, &data, sizeof(data)); 203} 204 205/* 206 * Send a Port Capability Mask Changed trap (ch. 14.3.11). 207 */ 208void qib_cap_mask_chg(struct qib_ibport *ibp) 209{ 210 struct ib_mad_notice_attr data; 211 212 data.generic_type = IB_NOTICE_TYPE_INFO; 213 data.prod_type_msb = 0; 214 data.prod_type_lsb = IB_NOTICE_PROD_CA; 215 data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG; 216 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); 217 data.toggle_count = 0; 218 memset(&data.details, 0, sizeof(data.details)); 219 data.details.ntc_144.lid = data.issuer_lid; 220 data.details.ntc_144.new_cap_mask = cpu_to_be32(ibp->port_cap_flags); 221 222 qib_send_trap(ibp, &data, sizeof(data)); 223} 224 225/* 226 * Send a System Image GUID Changed trap (ch. 14.3.12). 227 */ 228void qib_sys_guid_chg(struct qib_ibport *ibp) 229{ 230 struct ib_mad_notice_attr data; 231 232 data.generic_type = IB_NOTICE_TYPE_INFO; 233 data.prod_type_msb = 0; 234 data.prod_type_lsb = IB_NOTICE_PROD_CA; 235 data.trap_num = IB_NOTICE_TRAP_SYS_GUID_CHG; 236 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); 237 data.toggle_count = 0; 238 memset(&data.details, 0, sizeof(data.details)); 239 data.details.ntc_145.lid = data.issuer_lid; 240 data.details.ntc_145.new_sys_guid = ib_qib_sys_image_guid; 241 242 qib_send_trap(ibp, &data, sizeof(data)); 243} 244 245/* 246 * Send a Node Description Changed trap (ch. 14.3.13). 247 */ 248void qib_node_desc_chg(struct qib_ibport *ibp) 249{ 250 struct ib_mad_notice_attr data; 251 252 data.generic_type = IB_NOTICE_TYPE_INFO; 253 data.prod_type_msb = 0; 254 data.prod_type_lsb = IB_NOTICE_PROD_CA; 255 data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG; 256 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); 257 data.toggle_count = 0; 258 memset(&data.details, 0, sizeof(data.details)); 259 data.details.ntc_144.lid = data.issuer_lid; 260 data.details.ntc_144.local_changes = 1; 261 data.details.ntc_144.change_flags = IB_NOTICE_TRAP_NODE_DESC_CHG; 262 263 qib_send_trap(ibp, &data, sizeof(data)); 264} 265 266static int subn_get_nodedescription(struct ib_smp *smp, 267 struct ib_device *ibdev) 268{ 269 if (smp->attr_mod) 270 smp->status |= IB_SMP_INVALID_FIELD; 271 272 memcpy(smp->data, ibdev->node_desc, sizeof(smp->data)); 273 274 return reply(smp); 275} 276 277static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev, 278 u8 port) 279{ 280 struct ib_node_info *nip = (struct ib_node_info *)&smp->data; 281 struct qib_devdata *dd = dd_from_ibdev(ibdev); 282 u32 vendor, majrev, minrev; 283 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ 284 285 /* GUID 0 is illegal */ 286 if (smp->attr_mod || pidx >= dd->num_pports || 287 dd->pport[pidx].guid == 0) 288 smp->status |= IB_SMP_INVALID_FIELD; 289 else 290 nip->port_guid = dd->pport[pidx].guid; 291 292 nip->base_version = 1; 293 nip->class_version = 1; 294 nip->node_type = 1; /* channel adapter */ 295 nip->num_ports = ibdev->phys_port_cnt; 296 /* This is already in network order */ 297 nip->sys_guid = ib_qib_sys_image_guid; 298 nip->node_guid = dd->pport->guid; /* Use first-port GUID as node */ 299 nip->partition_cap = cpu_to_be16(qib_get_npkeys(dd)); 300 nip->device_id = cpu_to_be16(dd->deviceid); 301 majrev = dd->majrev; 302 minrev = dd->minrev; 303 nip->revision = cpu_to_be32((majrev << 16) | minrev); 304 nip->local_port_num = port; 305 vendor = dd->vendorid; 306 nip->vendor_id[0] = QIB_SRC_OUI_1; 307 nip->vendor_id[1] = QIB_SRC_OUI_2; 308 nip->vendor_id[2] = QIB_SRC_OUI_3; 309 310 return reply(smp); 311} 312 313static int subn_get_guidinfo(struct ib_smp *smp, struct ib_device *ibdev, 314 u8 port) 315{ 316 struct qib_devdata *dd = dd_from_ibdev(ibdev); 317 u32 startgx = 8 * be32_to_cpu(smp->attr_mod); 318 __be64 *p = (__be64 *) smp->data; 319 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ 320 321 /* 32 blocks of 8 64-bit GUIDs per block */ 322 323 memset(smp->data, 0, sizeof(smp->data)); 324 325 if (startgx == 0 && pidx < dd->num_pports) { 326 struct qib_pportdata *ppd = dd->pport + pidx; 327 struct qib_ibport *ibp = &ppd->ibport_data; 328 __be64 g = ppd->guid; 329 unsigned i; 330 331 /* GUID 0 is illegal */ 332 if (g == 0) 333 smp->status |= IB_SMP_INVALID_FIELD; 334 else { 335 /* The first is a copy of the read-only HW GUID. */ 336 p[0] = g; 337 for (i = 1; i < QIB_GUIDS_PER_PORT; i++) 338 p[i] = ibp->guids[i - 1]; 339 } 340 } else 341 smp->status |= IB_SMP_INVALID_FIELD; 342 343 return reply(smp); 344} 345 346static void set_link_width_enabled(struct qib_pportdata *ppd, u32 w) 347{ 348 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LWID_ENB, w); 349} 350 351static void set_link_speed_enabled(struct qib_pportdata *ppd, u32 s) 352{ 353 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_SPD_ENB, s); 354} 355 356static int get_overrunthreshold(struct qib_pportdata *ppd) 357{ 358 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH); 359} 360 361/** 362 * set_overrunthreshold - set the overrun threshold 363 * @ppd: the physical port data 364 * @n: the new threshold 365 * 366 * Note that this will only take effect when the link state changes. 367 */ 368static int set_overrunthreshold(struct qib_pportdata *ppd, unsigned n) 369{ 370 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH, 371 (u32)n); 372 return 0; 373} 374 375static int get_phyerrthreshold(struct qib_pportdata *ppd) 376{ 377 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH); 378} 379 380/** 381 * set_phyerrthreshold - set the physical error threshold 382 * @ppd: the physical port data 383 * @n: the new threshold 384 * 385 * Note that this will only take effect when the link state changes. 386 */ 387static int set_phyerrthreshold(struct qib_pportdata *ppd, unsigned n) 388{ 389 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH, 390 (u32)n); 391 return 0; 392} 393 394/** 395 * get_linkdowndefaultstate - get the default linkdown state 396 * @ppd: the physical port data 397 * 398 * Returns zero if the default is POLL, 1 if the default is SLEEP. 399 */ 400static int get_linkdowndefaultstate(struct qib_pportdata *ppd) 401{ 402 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT) == 403 IB_LINKINITCMD_SLEEP; 404} 405 406static int check_mkey(struct qib_ibport *ibp, struct ib_smp *smp, int mad_flags) 407{ 408 int valid_mkey = 0; 409 int ret = 0; 410 411 /* Is the mkey in the process of expiring? */ 412 if (ibp->mkey_lease_timeout && 413 time_after_eq(jiffies, ibp->mkey_lease_timeout)) { 414 /* Clear timeout and mkey protection field. */ 415 ibp->mkey_lease_timeout = 0; 416 ibp->mkeyprot = 0; 417 } 418 419 if ((mad_flags & IB_MAD_IGNORE_MKEY) || ibp->mkey == 0 || 420 ibp->mkey == smp->mkey) 421 valid_mkey = 1; 422 423 /* Unset lease timeout on any valid Get/Set/TrapRepress */ 424 if (valid_mkey && ibp->mkey_lease_timeout && 425 (smp->method == IB_MGMT_METHOD_GET || 426 smp->method == IB_MGMT_METHOD_SET || 427 smp->method == IB_MGMT_METHOD_TRAP_REPRESS)) 428 ibp->mkey_lease_timeout = 0; 429 430 if (!valid_mkey) { 431 switch (smp->method) { 432 case IB_MGMT_METHOD_GET: 433 /* Bad mkey not a violation below level 2 */ 434 if (ibp->mkeyprot < 2) 435 break; 436 case IB_MGMT_METHOD_SET: 437 case IB_MGMT_METHOD_TRAP_REPRESS: 438 if (ibp->mkey_violations != 0xFFFF) 439 ++ibp->mkey_violations; 440 if (!ibp->mkey_lease_timeout && ibp->mkey_lease_period) 441 ibp->mkey_lease_timeout = jiffies + 442 ibp->mkey_lease_period * HZ; 443 /* Generate a trap notice. */ 444 qib_bad_mkey(ibp, smp); 445 ret = 1; 446 } 447 } 448 449 return ret; 450} 451 452static int subn_get_portinfo(struct ib_smp *smp, struct ib_device *ibdev, 453 u8 port) 454{ 455 struct qib_devdata *dd; 456 struct qib_pportdata *ppd; 457 struct qib_ibport *ibp; 458 struct ib_port_info *pip = (struct ib_port_info *)smp->data; 459 u8 mtu; 460 int ret; 461 u32 state; 462 u32 port_num = be32_to_cpu(smp->attr_mod); 463 464 if (port_num == 0) 465 port_num = port; 466 else { 467 if (port_num > ibdev->phys_port_cnt) { 468 smp->status |= IB_SMP_INVALID_FIELD; 469 ret = reply(smp); 470 goto bail; 471 } 472 if (port_num != port) { 473 ibp = to_iport(ibdev, port_num); 474 ret = check_mkey(ibp, smp, 0); 475 if (ret) { 476 ret = IB_MAD_RESULT_FAILURE; 477 goto bail; 478 } 479 } 480 } 481 482 dd = dd_from_ibdev(ibdev); 483 /* IB numbers ports from 1, hdw from 0 */ 484 ppd = dd->pport + (port_num - 1); 485 ibp = &ppd->ibport_data; 486 487 /* Clear all fields. Only set the non-zero fields. */ 488 memset(smp->data, 0, sizeof(smp->data)); 489 490 /* Only return the mkey if the protection field allows it. */ 491 if (!(smp->method == IB_MGMT_METHOD_GET && 492 ibp->mkey != smp->mkey && 493 ibp->mkeyprot == 1)) 494 pip->mkey = ibp->mkey; 495 pip->gid_prefix = ibp->gid_prefix; 496 pip->lid = cpu_to_be16(ppd->lid); 497 pip->sm_lid = cpu_to_be16(ibp->sm_lid); 498 pip->cap_mask = cpu_to_be32(ibp->port_cap_flags); 499 /* pip->diag_code; */ 500 pip->mkey_lease_period = cpu_to_be16(ibp->mkey_lease_period); 501 pip->local_port_num = port; 502 pip->link_width_enabled = ppd->link_width_enabled; 503 pip->link_width_supported = ppd->link_width_supported; 504 pip->link_width_active = ppd->link_width_active; 505 state = dd->f_iblink_state(ppd->lastibcstat); 506 pip->linkspeed_portstate = ppd->link_speed_supported << 4 | state; 507 508 pip->portphysstate_linkdown = 509 (dd->f_ibphys_portstate(ppd->lastibcstat) << 4) | 510 (get_linkdowndefaultstate(ppd) ? 1 : 2); 511 pip->mkeyprot_resv_lmc = (ibp->mkeyprot << 6) | ppd->lmc; 512 pip->linkspeedactive_enabled = (ppd->link_speed_active << 4) | 513 ppd->link_speed_enabled; 514 switch (ppd->ibmtu) { 515 default: /* something is wrong; fall through */ 516 case 4096: 517 mtu = IB_MTU_4096; 518 break; 519 case 2048: 520 mtu = IB_MTU_2048; 521 break; 522 case 1024: 523 mtu = IB_MTU_1024; 524 break; 525 case 512: 526 mtu = IB_MTU_512; 527 break; 528 case 256: 529 mtu = IB_MTU_256; 530 break; 531 } 532 pip->neighbormtu_mastersmsl = (mtu << 4) | ibp->sm_sl; 533 pip->vlcap_inittype = ppd->vls_supported << 4; /* InitType = 0 */ 534 pip->vl_high_limit = ibp->vl_high_limit; 535 pip->vl_arb_high_cap = 536 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_CAP); 537 pip->vl_arb_low_cap = 538 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_LOW_CAP); 539 /* InitTypeReply = 0 */ 540 pip->inittypereply_mtucap = qib_ibmtu ? qib_ibmtu : IB_MTU_4096; 541 /* HCAs ignore VLStallCount and HOQLife */ 542 /* pip->vlstallcnt_hoqlife; */ 543 pip->operationalvl_pei_peo_fpi_fpo = 544 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OP_VLS) << 4; 545 pip->mkey_violations = cpu_to_be16(ibp->mkey_violations); 546 /* P_KeyViolations are counted by hardware. */ 547 pip->pkey_violations = cpu_to_be16(ibp->pkey_violations); 548 pip->qkey_violations = cpu_to_be16(ibp->qkey_violations); 549 /* Only the hardware GUID is supported for now */ 550 pip->guid_cap = QIB_GUIDS_PER_PORT; 551 pip->clientrereg_resv_subnetto = ibp->subnet_timeout; 552 /* 32.768 usec. response time (guessing) */ 553 pip->resv_resptimevalue = 3; 554 pip->localphyerrors_overrunerrors = 555 (get_phyerrthreshold(ppd) << 4) | 556 get_overrunthreshold(ppd); 557 /* pip->max_credit_hint; */ 558 if (ibp->port_cap_flags & IB_PORT_LINK_LATENCY_SUP) { 559 u32 v; 560 561 v = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKLATENCY); 562 pip->link_roundtrip_latency[0] = v >> 16; 563 pip->link_roundtrip_latency[1] = v >> 8; 564 pip->link_roundtrip_latency[2] = v; 565 } 566 567 ret = reply(smp); 568 569bail: 570 return ret; 571} 572 573/** 574 * get_pkeys - return the PKEY table 575 * @dd: the qlogic_ib device 576 * @port: the IB port number 577 * @pkeys: the pkey table is placed here 578 */ 579static int get_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys) 580{ 581 struct qib_pportdata *ppd = dd->pport + port - 1; 582 /* 583 * always a kernel context, no locking needed. 584 * If we get here with ppd setup, no need to check 585 * that pd is valid. 586 */ 587 struct qib_ctxtdata *rcd = dd->rcd[ppd->hw_pidx]; 588 589 memcpy(pkeys, rcd->pkeys, sizeof(rcd->pkeys)); 590 591 return 0; 592} 593 594static int subn_get_pkeytable(struct ib_smp *smp, struct ib_device *ibdev, 595 u8 port) 596{ 597 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); 598 u16 *p = (u16 *) smp->data; 599 __be16 *q = (__be16 *) smp->data; 600 601 /* 64 blocks of 32 16-bit P_Key entries */ 602 603 memset(smp->data, 0, sizeof(smp->data)); 604 if (startpx == 0) { 605 struct qib_devdata *dd = dd_from_ibdev(ibdev); 606 unsigned i, n = qib_get_npkeys(dd); 607 608 get_pkeys(dd, port, p); 609 610 for (i = 0; i < n; i++) 611 q[i] = cpu_to_be16(p[i]); 612 } else 613 smp->status |= IB_SMP_INVALID_FIELD; 614 615 return reply(smp); 616} 617 618static int subn_set_guidinfo(struct ib_smp *smp, struct ib_device *ibdev, 619 u8 port) 620{ 621 struct qib_devdata *dd = dd_from_ibdev(ibdev); 622 u32 startgx = 8 * be32_to_cpu(smp->attr_mod); 623 __be64 *p = (__be64 *) smp->data; 624 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ 625 626 /* 32 blocks of 8 64-bit GUIDs per block */ 627 628 if (startgx == 0 && pidx < dd->num_pports) { 629 struct qib_pportdata *ppd = dd->pport + pidx; 630 struct qib_ibport *ibp = &ppd->ibport_data; 631 unsigned i; 632 633 /* The first entry is read-only. */ 634 for (i = 1; i < QIB_GUIDS_PER_PORT; i++) 635 ibp->guids[i - 1] = p[i]; 636 } else 637 smp->status |= IB_SMP_INVALID_FIELD; 638 639 /* The only GUID we support is the first read-only entry. */ 640 return subn_get_guidinfo(smp, ibdev, port); 641} 642 643/** 644 * subn_set_portinfo - set port information 645 * @smp: the incoming SM packet 646 * @ibdev: the infiniband device 647 * @port: the port on the device 648 * 649 * Set Portinfo (see ch. 14.2.5.6). 650 */ 651static int subn_set_portinfo(struct ib_smp *smp, struct ib_device *ibdev, 652 u8 port) 653{ 654 struct ib_port_info *pip = (struct ib_port_info *)smp->data; 655 struct ib_event event; 656 struct qib_devdata *dd; 657 struct qib_pportdata *ppd; 658 struct qib_ibport *ibp; 659 u8 clientrereg = (pip->clientrereg_resv_subnetto & 0x80); 660 unsigned long flags; 661 u16 lid, smlid; 662 u8 lwe; 663 u8 lse; 664 u8 state; 665 u8 vls; 666 u8 msl; 667 u16 lstate; 668 int ret, ore, mtu; 669 u32 port_num = be32_to_cpu(smp->attr_mod); 670 671 if (port_num == 0) 672 port_num = port; 673 else { 674 if (port_num > ibdev->phys_port_cnt) 675 goto err; 676 /* Port attributes can only be set on the receiving port */ 677 if (port_num != port) 678 goto get_only; 679 } 680 681 dd = dd_from_ibdev(ibdev); 682 /* IB numbers ports from 1, hdw from 0 */ 683 ppd = dd->pport + (port_num - 1); 684 ibp = &ppd->ibport_data; 685 event.device = ibdev; 686 event.element.port_num = port; 687 688 ibp->mkey = pip->mkey; 689 ibp->gid_prefix = pip->gid_prefix; 690 ibp->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period); 691 692 lid = be16_to_cpu(pip->lid); 693 /* Must be a valid unicast LID address. */ 694 if (lid == 0 || lid >= QIB_MULTICAST_LID_BASE) 695 smp->status |= IB_SMP_INVALID_FIELD; 696 else if (ppd->lid != lid || ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) { 697 if (ppd->lid != lid) 698 qib_set_uevent_bits(ppd, _QIB_EVENT_LID_CHANGE_BIT); 699 if (ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) 700 qib_set_uevent_bits(ppd, _QIB_EVENT_LMC_CHANGE_BIT); 701 qib_set_lid(ppd, lid, pip->mkeyprot_resv_lmc & 7); 702 event.event = IB_EVENT_LID_CHANGE; 703 ib_dispatch_event(&event); 704 } 705 706 smlid = be16_to_cpu(pip->sm_lid); 707 msl = pip->neighbormtu_mastersmsl & 0xF; 708 /* Must be a valid unicast LID address. */ 709 if (smlid == 0 || smlid >= QIB_MULTICAST_LID_BASE) 710 smp->status |= IB_SMP_INVALID_FIELD; 711 else if (smlid != ibp->sm_lid || msl != ibp->sm_sl) { 712 spin_lock_irqsave(&ibp->lock, flags); 713 if (ibp->sm_ah) { 714 if (smlid != ibp->sm_lid) 715 ibp->sm_ah->attr.dlid = smlid; 716 if (msl != ibp->sm_sl) 717 ibp->sm_ah->attr.sl = msl; 718 } 719 spin_unlock_irqrestore(&ibp->lock, flags); 720 if (smlid != ibp->sm_lid) 721 ibp->sm_lid = smlid; 722 if (msl != ibp->sm_sl) 723 ibp->sm_sl = msl; 724 event.event = IB_EVENT_SM_CHANGE; 725 ib_dispatch_event(&event); 726 } 727 728 /* Allow 1x or 4x to be set (see 14.2.6.6). */ 729 lwe = pip->link_width_enabled; 730 if (lwe) { 731 if (lwe == 0xFF) 732 set_link_width_enabled(ppd, ppd->link_width_supported); 733 else if (lwe >= 16 || (lwe & ~ppd->link_width_supported)) 734 smp->status |= IB_SMP_INVALID_FIELD; 735 else if (lwe != ppd->link_width_enabled) 736 set_link_width_enabled(ppd, lwe); 737 } 738 739 lse = pip->linkspeedactive_enabled & 0xF; 740 if (lse) { 741 /* 742 * The IB 1.2 spec. only allows link speed values 743 * 1, 3, 5, 7, 15. 1.2.1 extended to allow specific 744 * speeds. 745 */ 746 if (lse == 15) 747 set_link_speed_enabled(ppd, 748 ppd->link_speed_supported); 749 else if (lse >= 8 || (lse & ~ppd->link_speed_supported)) 750 smp->status |= IB_SMP_INVALID_FIELD; 751 else if (lse != ppd->link_speed_enabled) 752 set_link_speed_enabled(ppd, lse); 753 } 754 755 /* Set link down default state. */ 756 switch (pip->portphysstate_linkdown & 0xF) { 757 case 0: /* NOP */ 758 break; 759 case 1: /* SLEEP */ 760 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT, 761 IB_LINKINITCMD_SLEEP); 762 break; 763 case 2: /* POLL */ 764 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT, 765 IB_LINKINITCMD_POLL); 766 break; 767 default: 768 smp->status |= IB_SMP_INVALID_FIELD; 769 } 770 771 ibp->mkeyprot = pip->mkeyprot_resv_lmc >> 6; 772 ibp->vl_high_limit = pip->vl_high_limit; 773 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_LIMIT, 774 ibp->vl_high_limit); 775 776 mtu = ib_mtu_enum_to_int((pip->neighbormtu_mastersmsl >> 4) & 0xF); 777 if (mtu == -1) 778 smp->status |= IB_SMP_INVALID_FIELD; 779 else 780 qib_set_mtu(ppd, mtu); 781 782 /* Set operational VLs */ 783 vls = (pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF; 784 if (vls) { 785 if (vls > ppd->vls_supported) 786 smp->status |= IB_SMP_INVALID_FIELD; 787 else 788 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OP_VLS, vls); 789 } 790 791 if (pip->mkey_violations == 0) 792 ibp->mkey_violations = 0; 793 794 if (pip->pkey_violations == 0) 795 ibp->pkey_violations = 0; 796 797 if (pip->qkey_violations == 0) 798 ibp->qkey_violations = 0; 799 800 ore = pip->localphyerrors_overrunerrors; 801 if (set_phyerrthreshold(ppd, (ore >> 4) & 0xF)) 802 smp->status |= IB_SMP_INVALID_FIELD; 803 804 if (set_overrunthreshold(ppd, (ore & 0xF))) 805 smp->status |= IB_SMP_INVALID_FIELD; 806 807 ibp->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F; 808 809 /* 810 * Do the port state change now that the other link parameters 811 * have been set. 812 * Changing the port physical state only makes sense if the link 813 * is down or is being set to down. 814 */ 815 state = pip->linkspeed_portstate & 0xF; 816 lstate = (pip->portphysstate_linkdown >> 4) & 0xF; 817 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP)) 818 smp->status |= IB_SMP_INVALID_FIELD; 819 820 /* 821 * Only state changes of DOWN, ARM, and ACTIVE are valid 822 * and must be in the correct state to take effect (see 7.2.6). 823 */ 824 switch (state) { 825 case IB_PORT_NOP: 826 if (lstate == 0) 827 break; 828 /* FALLTHROUGH */ 829 case IB_PORT_DOWN: 830 if (lstate == 0) 831 lstate = QIB_IB_LINKDOWN_ONLY; 832 else if (lstate == 1) 833 lstate = QIB_IB_LINKDOWN_SLEEP; 834 else if (lstate == 2) 835 lstate = QIB_IB_LINKDOWN; 836 else if (lstate == 3) 837 lstate = QIB_IB_LINKDOWN_DISABLE; 838 else { 839 smp->status |= IB_SMP_INVALID_FIELD; 840 break; 841 } 842 spin_lock_irqsave(&ppd->lflags_lock, flags); 843 ppd->lflags &= ~QIBL_LINKV; 844 spin_unlock_irqrestore(&ppd->lflags_lock, flags); 845 qib_set_linkstate(ppd, lstate); 846 /* 847 * Don't send a reply if the response would be sent 848 * through the disabled port. 849 */ 850 if (lstate == QIB_IB_LINKDOWN_DISABLE && smp->hop_cnt) { 851 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 852 goto done; 853 } 854 qib_wait_linkstate(ppd, QIBL_LINKV, 10); 855 break; 856 case IB_PORT_ARMED: 857 qib_set_linkstate(ppd, QIB_IB_LINKARM); 858 break; 859 case IB_PORT_ACTIVE: 860 qib_set_linkstate(ppd, QIB_IB_LINKACTIVE); 861 break; 862 default: 863 smp->status |= IB_SMP_INVALID_FIELD; 864 } 865 866 if (clientrereg) { 867 event.event = IB_EVENT_CLIENT_REREGISTER; 868 ib_dispatch_event(&event); 869 } 870 871 ret = subn_get_portinfo(smp, ibdev, port); 872 873 /* restore re-reg bit per o14-12.2.1 */ 874 pip->clientrereg_resv_subnetto |= clientrereg; 875 876 goto get_only; 877 878err: 879 smp->status |= IB_SMP_INVALID_FIELD; 880get_only: 881 ret = subn_get_portinfo(smp, ibdev, port); 882done: 883 return ret; 884} 885 886/** 887 * rm_pkey - decrecment the reference count for the given PKEY 888 * @dd: the qlogic_ib device 889 * @key: the PKEY index 890 * 891 * Return true if this was the last reference and the hardware table entry 892 * needs to be changed. 893 */ 894static int rm_pkey(struct qib_pportdata *ppd, u16 key) 895{ 896 int i; 897 int ret; 898 899 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { 900 if (ppd->pkeys[i] != key) 901 continue; 902 if (atomic_dec_and_test(&ppd->pkeyrefs[i])) { 903 ppd->pkeys[i] = 0; 904 ret = 1; 905 goto bail; 906 } 907 break; 908 } 909 910 ret = 0; 911 912bail: 913 return ret; 914} 915 916/** 917 * add_pkey - add the given PKEY to the hardware table 918 * @dd: the qlogic_ib device 919 * @key: the PKEY 920 * 921 * Return an error code if unable to add the entry, zero if no change, 922 * or 1 if the hardware PKEY register needs to be updated. 923 */ 924static int add_pkey(struct qib_pportdata *ppd, u16 key) 925{ 926 int i; 927 u16 lkey = key & 0x7FFF; 928 int any = 0; 929 int ret; 930 931 if (lkey == 0x7FFF) { 932 ret = 0; 933 goto bail; 934 } 935 936 /* Look for an empty slot or a matching PKEY. */ 937 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { 938 if (!ppd->pkeys[i]) { 939 any++; 940 continue; 941 } 942 /* If it matches exactly, try to increment the ref count */ 943 if (ppd->pkeys[i] == key) { 944 if (atomic_inc_return(&ppd->pkeyrefs[i]) > 1) { 945 ret = 0; 946 goto bail; 947 } 948 /* Lost the race. Look for an empty slot below. */ 949 atomic_dec(&ppd->pkeyrefs[i]); 950 any++; 951 } 952 /* 953 * It makes no sense to have both the limited and unlimited 954 * PKEY set at the same time since the unlimited one will 955 * disable the limited one. 956 */ 957 if ((ppd->pkeys[i] & 0x7FFF) == lkey) { 958 ret = -EEXIST; 959 goto bail; 960 } 961 } 962 if (!any) { 963 ret = -EBUSY; 964 goto bail; 965 } 966 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { 967 if (!ppd->pkeys[i] && 968 atomic_inc_return(&ppd->pkeyrefs[i]) == 1) { 969 /* for qibstats, etc. */ 970 ppd->pkeys[i] = key; 971 ret = 1; 972 goto bail; 973 } 974 } 975 ret = -EBUSY; 976 977bail: 978 return ret; 979} 980 981/** 982 * set_pkeys - set the PKEY table for ctxt 0 983 * @dd: the qlogic_ib device 984 * @port: the IB port number 985 * @pkeys: the PKEY table 986 */ 987static int set_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys) 988{ 989 struct qib_pportdata *ppd; 990 struct qib_ctxtdata *rcd; 991 int i; 992 int changed = 0; 993 994 /* 995 * IB port one/two always maps to context zero/one, 996 * always a kernel context, no locking needed 997 * If we get here with ppd setup, no need to check 998 * that rcd is valid. 999 */ 1000 ppd = dd->pport + (port - 1); 1001 rcd = dd->rcd[ppd->hw_pidx]; 1002 1003 for (i = 0; i < ARRAY_SIZE(rcd->pkeys); i++) { 1004 u16 key = pkeys[i]; 1005 u16 okey = rcd->pkeys[i]; 1006 1007 if (key == okey) 1008 continue; 1009 /* 1010 * The value of this PKEY table entry is changing. 1011 * Remove the old entry in the hardware's array of PKEYs. 1012 */ 1013 if (okey & 0x7FFF) 1014 changed |= rm_pkey(ppd, okey); 1015 if (key & 0x7FFF) { 1016 int ret = add_pkey(ppd, key); 1017 1018 if (ret < 0) 1019 key = 0; 1020 else 1021 changed |= ret; 1022 } 1023 rcd->pkeys[i] = key; 1024 } 1025 if (changed) { 1026 struct ib_event event; 1027 1028 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PKEYS, 0); 1029 1030 event.event = IB_EVENT_PKEY_CHANGE; 1031 event.device = &dd->verbs_dev.ibdev; 1032 event.element.port_num = port; 1033 ib_dispatch_event(&event); 1034 } 1035 return 0; 1036} 1037 1038static int subn_set_pkeytable(struct ib_smp *smp, struct ib_device *ibdev, 1039 u8 port) 1040{ 1041 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); 1042 __be16 *p = (__be16 *) smp->data; 1043 u16 *q = (u16 *) smp->data; 1044 struct qib_devdata *dd = dd_from_ibdev(ibdev); 1045 unsigned i, n = qib_get_npkeys(dd); 1046 1047 for (i = 0; i < n; i++) 1048 q[i] = be16_to_cpu(p[i]); 1049 1050 if (startpx != 0 || set_pkeys(dd, port, q) != 0) 1051 smp->status |= IB_SMP_INVALID_FIELD; 1052 1053 return subn_get_pkeytable(smp, ibdev, port); 1054} 1055 1056static int subn_get_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev, 1057 u8 port) 1058{ 1059 struct qib_ibport *ibp = to_iport(ibdev, port); 1060 u8 *p = (u8 *) smp->data; 1061 unsigned i; 1062 1063 memset(smp->data, 0, sizeof(smp->data)); 1064 1065 if (!(ibp->port_cap_flags & IB_PORT_SL_MAP_SUP)) 1066 smp->status |= IB_SMP_UNSUP_METHOD; 1067 else 1068 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2) 1069 *p++ = (ibp->sl_to_vl[i] << 4) | ibp->sl_to_vl[i + 1]; 1070 1071 return reply(smp); 1072} 1073 1074static int subn_set_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev, 1075 u8 port) 1076{ 1077 struct qib_ibport *ibp = to_iport(ibdev, port); 1078 u8 *p = (u8 *) smp->data; 1079 unsigned i; 1080 1081 if (!(ibp->port_cap_flags & IB_PORT_SL_MAP_SUP)) { 1082 smp->status |= IB_SMP_UNSUP_METHOD; 1083 return reply(smp); 1084 } 1085 1086 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2, p++) { 1087 ibp->sl_to_vl[i] = *p >> 4; 1088 ibp->sl_to_vl[i + 1] = *p & 0xF; 1089 } 1090 qib_set_uevent_bits(ppd_from_ibp(to_iport(ibdev, port)), 1091 _QIB_EVENT_SL2VL_CHANGE_BIT); 1092 1093 return subn_get_sl_to_vl(smp, ibdev, port); 1094} 1095 1096static int subn_get_vl_arb(struct ib_smp *smp, struct ib_device *ibdev, 1097 u8 port) 1098{ 1099 unsigned which = be32_to_cpu(smp->attr_mod) >> 16; 1100 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port)); 1101 1102 memset(smp->data, 0, sizeof(smp->data)); 1103 1104 if (ppd->vls_supported == IB_VL_VL0) 1105 smp->status |= IB_SMP_UNSUP_METHOD; 1106 else if (which == IB_VLARB_LOWPRI_0_31) 1107 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB, 1108 smp->data); 1109 else if (which == IB_VLARB_HIGHPRI_0_31) 1110 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB, 1111 smp->data); 1112 else 1113 smp->status |= IB_SMP_INVALID_FIELD; 1114 1115 return reply(smp); 1116} 1117 1118static int subn_set_vl_arb(struct ib_smp *smp, struct ib_device *ibdev, 1119 u8 port) 1120{ 1121 unsigned which = be32_to_cpu(smp->attr_mod) >> 16; 1122 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port)); 1123 1124 if (ppd->vls_supported == IB_VL_VL0) 1125 smp->status |= IB_SMP_UNSUP_METHOD; 1126 else if (which == IB_VLARB_LOWPRI_0_31) 1127 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB, 1128 smp->data); 1129 else if (which == IB_VLARB_HIGHPRI_0_31) 1130 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB, 1131 smp->data); 1132 else 1133 smp->status |= IB_SMP_INVALID_FIELD; 1134 1135 return subn_get_vl_arb(smp, ibdev, port); 1136} 1137 1138static int subn_trap_repress(struct ib_smp *smp, struct ib_device *ibdev, 1139 u8 port) 1140{ 1141 /* 1142 * For now, we only send the trap once so no need to process this. 1143 * o13-6, o13-7, 1144 * o14-3.a4 The SMA shall not send any message in response to a valid 1145 * SubnTrapRepress() message. 1146 */ 1147 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 1148} 1149 1150static int pma_get_classportinfo(struct ib_pma_mad *pmp, 1151 struct ib_device *ibdev) 1152{ 1153 struct ib_class_port_info *p = 1154 (struct ib_class_port_info *)pmp->data; 1155 struct qib_devdata *dd = dd_from_ibdev(ibdev); 1156 1157 memset(pmp->data, 0, sizeof(pmp->data)); 1158 1159 if (pmp->mad_hdr.attr_mod != 0) 1160 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1161 1162 /* Note that AllPortSelect is not valid */ 1163 p->base_version = 1; 1164 p->class_version = 1; 1165 p->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH; 1166 /* 1167 * Set the most significant bit of CM2 to indicate support for 1168 * congestion statistics 1169 */ 1170 p->reserved[0] = dd->psxmitwait_supported << 7; 1171 /* 1172 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec. 1173 */ 1174 p->resp_time_value = 18; 1175 1176 return reply((struct ib_smp *) pmp); 1177} 1178 1179static int pma_get_portsamplescontrol(struct ib_pma_mad *pmp, 1180 struct ib_device *ibdev, u8 port) 1181{ 1182 struct ib_pma_portsamplescontrol *p = 1183 (struct ib_pma_portsamplescontrol *)pmp->data; 1184 struct qib_ibdev *dev = to_idev(ibdev); 1185 struct qib_devdata *dd = dd_from_dev(dev); 1186 struct qib_ibport *ibp = to_iport(ibdev, port); 1187 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1188 unsigned long flags; 1189 u8 port_select = p->port_select; 1190 1191 memset(pmp->data, 0, sizeof(pmp->data)); 1192 1193 p->port_select = port_select; 1194 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) { 1195 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1196 goto bail; 1197 } 1198 spin_lock_irqsave(&ibp->lock, flags); 1199 p->tick = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PMA_TICKS); 1200 p->sample_status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); 1201 p->counter_width = 4; /* 32 bit counters */ 1202 p->counter_mask0_9 = COUNTER_MASK0_9; 1203 p->sample_start = cpu_to_be32(ibp->pma_sample_start); 1204 p->sample_interval = cpu_to_be32(ibp->pma_sample_interval); 1205 p->tag = cpu_to_be16(ibp->pma_tag); 1206 p->counter_select[0] = ibp->pma_counter_select[0]; 1207 p->counter_select[1] = ibp->pma_counter_select[1]; 1208 p->counter_select[2] = ibp->pma_counter_select[2]; 1209 p->counter_select[3] = ibp->pma_counter_select[3]; 1210 p->counter_select[4] = ibp->pma_counter_select[4]; 1211 spin_unlock_irqrestore(&ibp->lock, flags); 1212 1213bail: 1214 return reply((struct ib_smp *) pmp); 1215} 1216 1217static int pma_set_portsamplescontrol(struct ib_pma_mad *pmp, 1218 struct ib_device *ibdev, u8 port) 1219{ 1220 struct ib_pma_portsamplescontrol *p = 1221 (struct ib_pma_portsamplescontrol *)pmp->data; 1222 struct qib_ibdev *dev = to_idev(ibdev); 1223 struct qib_devdata *dd = dd_from_dev(dev); 1224 struct qib_ibport *ibp = to_iport(ibdev, port); 1225 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1226 unsigned long flags; 1227 u8 status, xmit_flags; 1228 int ret; 1229 1230 if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) { 1231 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1232 ret = reply((struct ib_smp *) pmp); 1233 goto bail; 1234 } 1235 1236 spin_lock_irqsave(&ibp->lock, flags); 1237 1238 /* Port Sampling code owns the PS* HW counters */ 1239 xmit_flags = ppd->cong_stats.flags; 1240 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_SAMPLE; 1241 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); 1242 if (status == IB_PMA_SAMPLE_STATUS_DONE || 1243 (status == IB_PMA_SAMPLE_STATUS_RUNNING && 1244 xmit_flags == IB_PMA_CONG_HW_CONTROL_TIMER)) { 1245 ibp->pma_sample_start = be32_to_cpu(p->sample_start); 1246 ibp->pma_sample_interval = be32_to_cpu(p->sample_interval); 1247 ibp->pma_tag = be16_to_cpu(p->tag); 1248 ibp->pma_counter_select[0] = p->counter_select[0]; 1249 ibp->pma_counter_select[1] = p->counter_select[1]; 1250 ibp->pma_counter_select[2] = p->counter_select[2]; 1251 ibp->pma_counter_select[3] = p->counter_select[3]; 1252 ibp->pma_counter_select[4] = p->counter_select[4]; 1253 dd->f_set_cntr_sample(ppd, ibp->pma_sample_interval, 1254 ibp->pma_sample_start); 1255 } 1256 spin_unlock_irqrestore(&ibp->lock, flags); 1257 1258 ret = pma_get_portsamplescontrol(pmp, ibdev, port); 1259 1260bail: 1261 return ret; 1262} 1263 1264static u64 get_counter(struct qib_ibport *ibp, struct qib_pportdata *ppd, 1265 __be16 sel) 1266{ 1267 u64 ret; 1268 1269 switch (sel) { 1270 case IB_PMA_PORT_XMIT_DATA: 1271 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITDATA); 1272 break; 1273 case IB_PMA_PORT_RCV_DATA: 1274 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVDATA); 1275 break; 1276 case IB_PMA_PORT_XMIT_PKTS: 1277 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITPKTS); 1278 break; 1279 case IB_PMA_PORT_RCV_PKTS: 1280 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVPKTS); 1281 break; 1282 case IB_PMA_PORT_XMIT_WAIT: 1283 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITWAIT); 1284 break; 1285 default: 1286 ret = 0; 1287 } 1288 1289 return ret; 1290} 1291 1292/* This function assumes that the xmit_wait lock is already held */ 1293static u64 xmit_wait_get_value_delta(struct qib_pportdata *ppd) 1294{ 1295 u32 delta; 1296 1297 delta = get_counter(&ppd->ibport_data, ppd, 1298 IB_PMA_PORT_XMIT_WAIT); 1299 return ppd->cong_stats.counter + delta; 1300} 1301 1302static void cache_hw_sample_counters(struct qib_pportdata *ppd) 1303{ 1304 struct qib_ibport *ibp = &ppd->ibport_data; 1305 1306 ppd->cong_stats.counter_cache.psxmitdata = 1307 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_DATA); 1308 ppd->cong_stats.counter_cache.psrcvdata = 1309 get_counter(ibp, ppd, IB_PMA_PORT_RCV_DATA); 1310 ppd->cong_stats.counter_cache.psxmitpkts = 1311 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_PKTS); 1312 ppd->cong_stats.counter_cache.psrcvpkts = 1313 get_counter(ibp, ppd, IB_PMA_PORT_RCV_PKTS); 1314 ppd->cong_stats.counter_cache.psxmitwait = 1315 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_WAIT); 1316} 1317 1318static u64 get_cache_hw_sample_counters(struct qib_pportdata *ppd, 1319 __be16 sel) 1320{ 1321 u64 ret; 1322 1323 switch (sel) { 1324 case IB_PMA_PORT_XMIT_DATA: 1325 ret = ppd->cong_stats.counter_cache.psxmitdata; 1326 break; 1327 case IB_PMA_PORT_RCV_DATA: 1328 ret = ppd->cong_stats.counter_cache.psrcvdata; 1329 break; 1330 case IB_PMA_PORT_XMIT_PKTS: 1331 ret = ppd->cong_stats.counter_cache.psxmitpkts; 1332 break; 1333 case IB_PMA_PORT_RCV_PKTS: 1334 ret = ppd->cong_stats.counter_cache.psrcvpkts; 1335 break; 1336 case IB_PMA_PORT_XMIT_WAIT: 1337 ret = ppd->cong_stats.counter_cache.psxmitwait; 1338 break; 1339 default: 1340 ret = 0; 1341 } 1342 1343 return ret; 1344} 1345 1346static int pma_get_portsamplesresult(struct ib_pma_mad *pmp, 1347 struct ib_device *ibdev, u8 port) 1348{ 1349 struct ib_pma_portsamplesresult *p = 1350 (struct ib_pma_portsamplesresult *)pmp->data; 1351 struct qib_ibdev *dev = to_idev(ibdev); 1352 struct qib_devdata *dd = dd_from_dev(dev); 1353 struct qib_ibport *ibp = to_iport(ibdev, port); 1354 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1355 unsigned long flags; 1356 u8 status; 1357 int i; 1358 1359 memset(pmp->data, 0, sizeof(pmp->data)); 1360 spin_lock_irqsave(&ibp->lock, flags); 1361 p->tag = cpu_to_be16(ibp->pma_tag); 1362 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER) 1363 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE; 1364 else { 1365 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); 1366 p->sample_status = cpu_to_be16(status); 1367 if (status == IB_PMA_SAMPLE_STATUS_DONE) { 1368 cache_hw_sample_counters(ppd); 1369 ppd->cong_stats.counter = 1370 xmit_wait_get_value_delta(ppd); 1371 dd->f_set_cntr_sample(ppd, 1372 QIB_CONG_TIMER_PSINTERVAL, 0); 1373 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; 1374 } 1375 } 1376 for (i = 0; i < ARRAY_SIZE(ibp->pma_counter_select); i++) 1377 p->counter[i] = cpu_to_be32( 1378 get_cache_hw_sample_counters( 1379 ppd, ibp->pma_counter_select[i])); 1380 spin_unlock_irqrestore(&ibp->lock, flags); 1381 1382 return reply((struct ib_smp *) pmp); 1383} 1384 1385static int pma_get_portsamplesresult_ext(struct ib_pma_mad *pmp, 1386 struct ib_device *ibdev, u8 port) 1387{ 1388 struct ib_pma_portsamplesresult_ext *p = 1389 (struct ib_pma_portsamplesresult_ext *)pmp->data; 1390 struct qib_ibdev *dev = to_idev(ibdev); 1391 struct qib_devdata *dd = dd_from_dev(dev); 1392 struct qib_ibport *ibp = to_iport(ibdev, port); 1393 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1394 unsigned long flags; 1395 u8 status; 1396 int i; 1397 1398 /* Port Sampling code owns the PS* HW counters */ 1399 memset(pmp->data, 0, sizeof(pmp->data)); 1400 spin_lock_irqsave(&ibp->lock, flags); 1401 p->tag = cpu_to_be16(ibp->pma_tag); 1402 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER) 1403 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE; 1404 else { 1405 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); 1406 p->sample_status = cpu_to_be16(status); 1407 /* 64 bits */ 1408 p->extended_width = cpu_to_be32(0x80000000); 1409 if (status == IB_PMA_SAMPLE_STATUS_DONE) { 1410 cache_hw_sample_counters(ppd); 1411 ppd->cong_stats.counter = 1412 xmit_wait_get_value_delta(ppd); 1413 dd->f_set_cntr_sample(ppd, 1414 QIB_CONG_TIMER_PSINTERVAL, 0); 1415 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; 1416 } 1417 } 1418 for (i = 0; i < ARRAY_SIZE(ibp->pma_counter_select); i++) 1419 p->counter[i] = cpu_to_be64( 1420 get_cache_hw_sample_counters( 1421 ppd, ibp->pma_counter_select[i])); 1422 spin_unlock_irqrestore(&ibp->lock, flags); 1423 1424 return reply((struct ib_smp *) pmp); 1425} 1426 1427static int pma_get_portcounters(struct ib_pma_mad *pmp, 1428 struct ib_device *ibdev, u8 port) 1429{ 1430 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) 1431 pmp->data; 1432 struct qib_ibport *ibp = to_iport(ibdev, port); 1433 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1434 struct qib_verbs_counters cntrs; 1435 u8 port_select = p->port_select; 1436 1437 qib_get_counters(ppd, &cntrs); 1438 1439 /* Adjust counters for any resets done. */ 1440 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter; 1441 cntrs.link_error_recovery_counter -= 1442 ibp->z_link_error_recovery_counter; 1443 cntrs.link_downed_counter -= ibp->z_link_downed_counter; 1444 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors; 1445 cntrs.port_rcv_remphys_errors -= ibp->z_port_rcv_remphys_errors; 1446 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards; 1447 cntrs.port_xmit_data -= ibp->z_port_xmit_data; 1448 cntrs.port_rcv_data -= ibp->z_port_rcv_data; 1449 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets; 1450 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets; 1451 cntrs.local_link_integrity_errors -= 1452 ibp->z_local_link_integrity_errors; 1453 cntrs.excessive_buffer_overrun_errors -= 1454 ibp->z_excessive_buffer_overrun_errors; 1455 cntrs.vl15_dropped -= ibp->z_vl15_dropped; 1456 cntrs.vl15_dropped += ibp->n_vl15_dropped; 1457 1458 memset(pmp->data, 0, sizeof(pmp->data)); 1459 1460 p->port_select = port_select; 1461 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) 1462 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1463 1464 if (cntrs.symbol_error_counter > 0xFFFFUL) 1465 p->symbol_error_counter = cpu_to_be16(0xFFFF); 1466 else 1467 p->symbol_error_counter = 1468 cpu_to_be16((u16)cntrs.symbol_error_counter); 1469 if (cntrs.link_error_recovery_counter > 0xFFUL) 1470 p->link_error_recovery_counter = 0xFF; 1471 else 1472 p->link_error_recovery_counter = 1473 (u8)cntrs.link_error_recovery_counter; 1474 if (cntrs.link_downed_counter > 0xFFUL) 1475 p->link_downed_counter = 0xFF; 1476 else 1477 p->link_downed_counter = (u8)cntrs.link_downed_counter; 1478 if (cntrs.port_rcv_errors > 0xFFFFUL) 1479 p->port_rcv_errors = cpu_to_be16(0xFFFF); 1480 else 1481 p->port_rcv_errors = 1482 cpu_to_be16((u16) cntrs.port_rcv_errors); 1483 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL) 1484 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF); 1485 else 1486 p->port_rcv_remphys_errors = 1487 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors); 1488 if (cntrs.port_xmit_discards > 0xFFFFUL) 1489 p->port_xmit_discards = cpu_to_be16(0xFFFF); 1490 else 1491 p->port_xmit_discards = 1492 cpu_to_be16((u16)cntrs.port_xmit_discards); 1493 if (cntrs.local_link_integrity_errors > 0xFUL) 1494 cntrs.local_link_integrity_errors = 0xFUL; 1495 if (cntrs.excessive_buffer_overrun_errors > 0xFUL) 1496 cntrs.excessive_buffer_overrun_errors = 0xFUL; 1497 p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) | 1498 cntrs.excessive_buffer_overrun_errors; 1499 if (cntrs.vl15_dropped > 0xFFFFUL) 1500 p->vl15_dropped = cpu_to_be16(0xFFFF); 1501 else 1502 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped); 1503 if (cntrs.port_xmit_data > 0xFFFFFFFFUL) 1504 p->port_xmit_data = cpu_to_be32(0xFFFFFFFF); 1505 else 1506 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data); 1507 if (cntrs.port_rcv_data > 0xFFFFFFFFUL) 1508 p->port_rcv_data = cpu_to_be32(0xFFFFFFFF); 1509 else 1510 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data); 1511 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL) 1512 p->port_xmit_packets = cpu_to_be32(0xFFFFFFFF); 1513 else 1514 p->port_xmit_packets = 1515 cpu_to_be32((u32)cntrs.port_xmit_packets); 1516 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL) 1517 p->port_rcv_packets = cpu_to_be32(0xFFFFFFFF); 1518 else 1519 p->port_rcv_packets = 1520 cpu_to_be32((u32) cntrs.port_rcv_packets); 1521 1522 return reply((struct ib_smp *) pmp); 1523} 1524 1525static int pma_get_portcounters_cong(struct ib_pma_mad *pmp, 1526 struct ib_device *ibdev, u8 port) 1527{ 1528 /* Congestion PMA packets start at offset 24 not 64 */ 1529 struct ib_pma_portcounters_cong *p = 1530 (struct ib_pma_portcounters_cong *)pmp->reserved; 1531 struct qib_verbs_counters cntrs; 1532 struct qib_ibport *ibp = to_iport(ibdev, port); 1533 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1534 struct qib_devdata *dd = dd_from_ppd(ppd); 1535 u32 port_select = be32_to_cpu(pmp->mad_hdr.attr_mod) & 0xFF; 1536 u64 xmit_wait_counter; 1537 unsigned long flags; 1538 1539 /* 1540 * This check is performed only in the GET method because the 1541 * SET method ends up calling this anyway. 1542 */ 1543 if (!dd->psxmitwait_supported) 1544 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; 1545 if (port_select != port) 1546 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1547 1548 qib_get_counters(ppd, &cntrs); 1549 spin_lock_irqsave(&ppd->ibport_data.lock, flags); 1550 xmit_wait_counter = xmit_wait_get_value_delta(ppd); 1551 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags); 1552 1553 /* Adjust counters for any resets done. */ 1554 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter; 1555 cntrs.link_error_recovery_counter -= 1556 ibp->z_link_error_recovery_counter; 1557 cntrs.link_downed_counter -= ibp->z_link_downed_counter; 1558 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors; 1559 cntrs.port_rcv_remphys_errors -= 1560 ibp->z_port_rcv_remphys_errors; 1561 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards; 1562 cntrs.local_link_integrity_errors -= 1563 ibp->z_local_link_integrity_errors; 1564 cntrs.excessive_buffer_overrun_errors -= 1565 ibp->z_excessive_buffer_overrun_errors; 1566 cntrs.vl15_dropped -= ibp->z_vl15_dropped; 1567 cntrs.vl15_dropped += ibp->n_vl15_dropped; 1568 cntrs.port_xmit_data -= ibp->z_port_xmit_data; 1569 cntrs.port_rcv_data -= ibp->z_port_rcv_data; 1570 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets; 1571 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets; 1572 1573 memset(pmp->reserved, 0, sizeof(pmp->reserved) + 1574 sizeof(pmp->data)); 1575 1576 /* 1577 * Set top 3 bits to indicate interval in picoseconds in 1578 * remaining bits. 1579 */ 1580 p->port_check_rate = 1581 cpu_to_be16((QIB_XMIT_RATE_PICO << 13) | 1582 (dd->psxmitwait_check_rate & 1583 ~(QIB_XMIT_RATE_PICO << 13))); 1584 p->port_adr_events = cpu_to_be64(0); 1585 p->port_xmit_wait = cpu_to_be64(xmit_wait_counter); 1586 p->port_xmit_data = cpu_to_be64(cntrs.port_xmit_data); 1587 p->port_rcv_data = cpu_to_be64(cntrs.port_rcv_data); 1588 p->port_xmit_packets = 1589 cpu_to_be64(cntrs.port_xmit_packets); 1590 p->port_rcv_packets = 1591 cpu_to_be64(cntrs.port_rcv_packets); 1592 if (cntrs.symbol_error_counter > 0xFFFFUL) 1593 p->symbol_error_counter = cpu_to_be16(0xFFFF); 1594 else 1595 p->symbol_error_counter = 1596 cpu_to_be16( 1597 (u16)cntrs.symbol_error_counter); 1598 if (cntrs.link_error_recovery_counter > 0xFFUL) 1599 p->link_error_recovery_counter = 0xFF; 1600 else 1601 p->link_error_recovery_counter = 1602 (u8)cntrs.link_error_recovery_counter; 1603 if (cntrs.link_downed_counter > 0xFFUL) 1604 p->link_downed_counter = 0xFF; 1605 else 1606 p->link_downed_counter = 1607 (u8)cntrs.link_downed_counter; 1608 if (cntrs.port_rcv_errors > 0xFFFFUL) 1609 p->port_rcv_errors = cpu_to_be16(0xFFFF); 1610 else 1611 p->port_rcv_errors = 1612 cpu_to_be16((u16) cntrs.port_rcv_errors); 1613 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL) 1614 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF); 1615 else 1616 p->port_rcv_remphys_errors = 1617 cpu_to_be16( 1618 (u16)cntrs.port_rcv_remphys_errors); 1619 if (cntrs.port_xmit_discards > 0xFFFFUL) 1620 p->port_xmit_discards = cpu_to_be16(0xFFFF); 1621 else 1622 p->port_xmit_discards = 1623 cpu_to_be16((u16)cntrs.port_xmit_discards); 1624 if (cntrs.local_link_integrity_errors > 0xFUL) 1625 cntrs.local_link_integrity_errors = 0xFUL; 1626 if (cntrs.excessive_buffer_overrun_errors > 0xFUL) 1627 cntrs.excessive_buffer_overrun_errors = 0xFUL; 1628 p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) | 1629 cntrs.excessive_buffer_overrun_errors; 1630 if (cntrs.vl15_dropped > 0xFFFFUL) 1631 p->vl15_dropped = cpu_to_be16(0xFFFF); 1632 else 1633 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped); 1634 1635 return reply((struct ib_smp *)pmp); 1636} 1637 1638static void qib_snapshot_pmacounters( 1639 struct qib_ibport *ibp, 1640 struct qib_pma_counters *pmacounters) 1641{ 1642 struct qib_pma_counters *p; 1643 int cpu; 1644 1645 memset(pmacounters, 0, sizeof(*pmacounters)); 1646 for_each_possible_cpu(cpu) { 1647 p = per_cpu_ptr(ibp->pmastats, cpu); 1648 pmacounters->n_unicast_xmit += p->n_unicast_xmit; 1649 pmacounters->n_unicast_rcv += p->n_unicast_rcv; 1650 pmacounters->n_multicast_xmit += p->n_multicast_xmit; 1651 pmacounters->n_multicast_rcv += p->n_multicast_rcv; 1652 } 1653} 1654 1655static int pma_get_portcounters_ext(struct ib_pma_mad *pmp, 1656 struct ib_device *ibdev, u8 port) 1657{ 1658 struct ib_pma_portcounters_ext *p = 1659 (struct ib_pma_portcounters_ext *)pmp->data; 1660 struct qib_ibport *ibp = to_iport(ibdev, port); 1661 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1662 u64 swords, rwords, spkts, rpkts, xwait; 1663 struct qib_pma_counters pma; 1664 u8 port_select = p->port_select; 1665 1666 memset(pmp->data, 0, sizeof(pmp->data)); 1667 1668 p->port_select = port_select; 1669 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) { 1670 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1671 goto bail; 1672 } 1673 1674 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait); 1675 1676 /* Adjust counters for any resets done. */ 1677 swords -= ibp->z_port_xmit_data; 1678 rwords -= ibp->z_port_rcv_data; 1679 spkts -= ibp->z_port_xmit_packets; 1680 rpkts -= ibp->z_port_rcv_packets; 1681 1682 p->port_xmit_data = cpu_to_be64(swords); 1683 p->port_rcv_data = cpu_to_be64(rwords); 1684 p->port_xmit_packets = cpu_to_be64(spkts); 1685 p->port_rcv_packets = cpu_to_be64(rpkts); 1686 1687 qib_snapshot_pmacounters(ibp, &pma); 1688 1689 p->port_unicast_xmit_packets = cpu_to_be64(pma.n_unicast_xmit 1690 - ibp->z_unicast_xmit); 1691 p->port_unicast_rcv_packets = cpu_to_be64(pma.n_unicast_rcv 1692 - ibp->z_unicast_rcv); 1693 p->port_multicast_xmit_packets = cpu_to_be64(pma.n_multicast_xmit 1694 - ibp->z_multicast_xmit); 1695 p->port_multicast_rcv_packets = cpu_to_be64(pma.n_multicast_rcv 1696 - ibp->z_multicast_rcv); 1697 1698bail: 1699 return reply((struct ib_smp *) pmp); 1700} 1701 1702static int pma_set_portcounters(struct ib_pma_mad *pmp, 1703 struct ib_device *ibdev, u8 port) 1704{ 1705 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) 1706 pmp->data; 1707 struct qib_ibport *ibp = to_iport(ibdev, port); 1708 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1709 struct qib_verbs_counters cntrs; 1710 1711 /* 1712 * Since the HW doesn't support clearing counters, we save the 1713 * current count and subtract it from future responses. 1714 */ 1715 qib_get_counters(ppd, &cntrs); 1716 1717 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR) 1718 ibp->z_symbol_error_counter = cntrs.symbol_error_counter; 1719 1720 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY) 1721 ibp->z_link_error_recovery_counter = 1722 cntrs.link_error_recovery_counter; 1723 1724 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED) 1725 ibp->z_link_downed_counter = cntrs.link_downed_counter; 1726 1727 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS) 1728 ibp->z_port_rcv_errors = cntrs.port_rcv_errors; 1729 1730 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS) 1731 ibp->z_port_rcv_remphys_errors = 1732 cntrs.port_rcv_remphys_errors; 1733 1734 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS) 1735 ibp->z_port_xmit_discards = cntrs.port_xmit_discards; 1736 1737 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS) 1738 ibp->z_local_link_integrity_errors = 1739 cntrs.local_link_integrity_errors; 1740 1741 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS) 1742 ibp->z_excessive_buffer_overrun_errors = 1743 cntrs.excessive_buffer_overrun_errors; 1744 1745 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) { 1746 ibp->n_vl15_dropped = 0; 1747 ibp->z_vl15_dropped = cntrs.vl15_dropped; 1748 } 1749 1750 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA) 1751 ibp->z_port_xmit_data = cntrs.port_xmit_data; 1752 1753 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA) 1754 ibp->z_port_rcv_data = cntrs.port_rcv_data; 1755 1756 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS) 1757 ibp->z_port_xmit_packets = cntrs.port_xmit_packets; 1758 1759 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS) 1760 ibp->z_port_rcv_packets = cntrs.port_rcv_packets; 1761 1762 return pma_get_portcounters(pmp, ibdev, port); 1763} 1764 1765static int pma_set_portcounters_cong(struct ib_pma_mad *pmp, 1766 struct ib_device *ibdev, u8 port) 1767{ 1768 struct qib_ibport *ibp = to_iport(ibdev, port); 1769 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1770 struct qib_devdata *dd = dd_from_ppd(ppd); 1771 struct qib_verbs_counters cntrs; 1772 u32 counter_select = (be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24) & 0xFF; 1773 int ret = 0; 1774 unsigned long flags; 1775 1776 qib_get_counters(ppd, &cntrs); 1777 /* Get counter values before we save them */ 1778 ret = pma_get_portcounters_cong(pmp, ibdev, port); 1779 1780 if (counter_select & IB_PMA_SEL_CONG_XMIT) { 1781 spin_lock_irqsave(&ppd->ibport_data.lock, flags); 1782 ppd->cong_stats.counter = 0; 1783 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 1784 0x0); 1785 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags); 1786 } 1787 if (counter_select & IB_PMA_SEL_CONG_PORT_DATA) { 1788 ibp->z_port_xmit_data = cntrs.port_xmit_data; 1789 ibp->z_port_rcv_data = cntrs.port_rcv_data; 1790 ibp->z_port_xmit_packets = cntrs.port_xmit_packets; 1791 ibp->z_port_rcv_packets = cntrs.port_rcv_packets; 1792 } 1793 if (counter_select & IB_PMA_SEL_CONG_ALL) { 1794 ibp->z_symbol_error_counter = 1795 cntrs.symbol_error_counter; 1796 ibp->z_link_error_recovery_counter = 1797 cntrs.link_error_recovery_counter; 1798 ibp->z_link_downed_counter = 1799 cntrs.link_downed_counter; 1800 ibp->z_port_rcv_errors = cntrs.port_rcv_errors; 1801 ibp->z_port_rcv_remphys_errors = 1802 cntrs.port_rcv_remphys_errors; 1803 ibp->z_port_xmit_discards = 1804 cntrs.port_xmit_discards; 1805 ibp->z_local_link_integrity_errors = 1806 cntrs.local_link_integrity_errors; 1807 ibp->z_excessive_buffer_overrun_errors = 1808 cntrs.excessive_buffer_overrun_errors; 1809 ibp->n_vl15_dropped = 0; 1810 ibp->z_vl15_dropped = cntrs.vl15_dropped; 1811 } 1812 1813 return ret; 1814} 1815 1816static int pma_set_portcounters_ext(struct ib_pma_mad *pmp, 1817 struct ib_device *ibdev, u8 port) 1818{ 1819 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) 1820 pmp->data; 1821 struct qib_ibport *ibp = to_iport(ibdev, port); 1822 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1823 u64 swords, rwords, spkts, rpkts, xwait; 1824 struct qib_pma_counters pma; 1825 1826 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait); 1827 1828 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA) 1829 ibp->z_port_xmit_data = swords; 1830 1831 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA) 1832 ibp->z_port_rcv_data = rwords; 1833 1834 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS) 1835 ibp->z_port_xmit_packets = spkts; 1836 1837 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS) 1838 ibp->z_port_rcv_packets = rpkts; 1839 1840 qib_snapshot_pmacounters(ibp, &pma); 1841 1842 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS) 1843 ibp->z_unicast_xmit = pma.n_unicast_xmit; 1844 1845 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS) 1846 ibp->z_unicast_rcv = pma.n_unicast_rcv; 1847 1848 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS) 1849 ibp->z_multicast_xmit = pma.n_multicast_xmit; 1850 1851 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS) 1852 ibp->z_multicast_rcv = pma.n_multicast_rcv; 1853 1854 return pma_get_portcounters_ext(pmp, ibdev, port); 1855} 1856 1857static int process_subn(struct ib_device *ibdev, int mad_flags, 1858 u8 port, const struct ib_mad *in_mad, 1859 struct ib_mad *out_mad) 1860{ 1861 struct ib_smp *smp = (struct ib_smp *)out_mad; 1862 struct qib_ibport *ibp = to_iport(ibdev, port); 1863 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1864 int ret; 1865 1866 *out_mad = *in_mad; 1867 if (smp->class_version != 1) { 1868 smp->status |= IB_SMP_UNSUP_VERSION; 1869 ret = reply(smp); 1870 goto bail; 1871 } 1872 1873 ret = check_mkey(ibp, smp, mad_flags); 1874 if (ret) { 1875 u32 port_num = be32_to_cpu(smp->attr_mod); 1876 1877 /* 1878 * If this is a get/set portinfo, we already check the 1879 * M_Key if the MAD is for another port and the M_Key 1880 * is OK on the receiving port. This check is needed 1881 * to increment the error counters when the M_Key 1882 * fails to match on *both* ports. 1883 */ 1884 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO && 1885 (smp->method == IB_MGMT_METHOD_GET || 1886 smp->method == IB_MGMT_METHOD_SET) && 1887 port_num && port_num <= ibdev->phys_port_cnt && 1888 port != port_num) 1889 (void) check_mkey(to_iport(ibdev, port_num), smp, 0); 1890 ret = IB_MAD_RESULT_FAILURE; 1891 goto bail; 1892 } 1893 1894 switch (smp->method) { 1895 case IB_MGMT_METHOD_GET: 1896 switch (smp->attr_id) { 1897 case IB_SMP_ATTR_NODE_DESC: 1898 ret = subn_get_nodedescription(smp, ibdev); 1899 goto bail; 1900 case IB_SMP_ATTR_NODE_INFO: 1901 ret = subn_get_nodeinfo(smp, ibdev, port); 1902 goto bail; 1903 case IB_SMP_ATTR_GUID_INFO: 1904 ret = subn_get_guidinfo(smp, ibdev, port); 1905 goto bail; 1906 case IB_SMP_ATTR_PORT_INFO: 1907 ret = subn_get_portinfo(smp, ibdev, port); 1908 goto bail; 1909 case IB_SMP_ATTR_PKEY_TABLE: 1910 ret = subn_get_pkeytable(smp, ibdev, port); 1911 goto bail; 1912 case IB_SMP_ATTR_SL_TO_VL_TABLE: 1913 ret = subn_get_sl_to_vl(smp, ibdev, port); 1914 goto bail; 1915 case IB_SMP_ATTR_VL_ARB_TABLE: 1916 ret = subn_get_vl_arb(smp, ibdev, port); 1917 goto bail; 1918 case IB_SMP_ATTR_SM_INFO: 1919 if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) { 1920 ret = IB_MAD_RESULT_SUCCESS | 1921 IB_MAD_RESULT_CONSUMED; 1922 goto bail; 1923 } 1924 if (ibp->port_cap_flags & IB_PORT_SM) { 1925 ret = IB_MAD_RESULT_SUCCESS; 1926 goto bail; 1927 } 1928 /* FALLTHROUGH */ 1929 default: 1930 smp->status |= IB_SMP_UNSUP_METH_ATTR; 1931 ret = reply(smp); 1932 goto bail; 1933 } 1934 1935 case IB_MGMT_METHOD_SET: 1936 switch (smp->attr_id) { 1937 case IB_SMP_ATTR_GUID_INFO: 1938 ret = subn_set_guidinfo(smp, ibdev, port); 1939 goto bail; 1940 case IB_SMP_ATTR_PORT_INFO: 1941 ret = subn_set_portinfo(smp, ibdev, port); 1942 goto bail; 1943 case IB_SMP_ATTR_PKEY_TABLE: 1944 ret = subn_set_pkeytable(smp, ibdev, port); 1945 goto bail; 1946 case IB_SMP_ATTR_SL_TO_VL_TABLE: 1947 ret = subn_set_sl_to_vl(smp, ibdev, port); 1948 goto bail; 1949 case IB_SMP_ATTR_VL_ARB_TABLE: 1950 ret = subn_set_vl_arb(smp, ibdev, port); 1951 goto bail; 1952 case IB_SMP_ATTR_SM_INFO: 1953 if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) { 1954 ret = IB_MAD_RESULT_SUCCESS | 1955 IB_MAD_RESULT_CONSUMED; 1956 goto bail; 1957 } 1958 if (ibp->port_cap_flags & IB_PORT_SM) { 1959 ret = IB_MAD_RESULT_SUCCESS; 1960 goto bail; 1961 } 1962 /* FALLTHROUGH */ 1963 default: 1964 smp->status |= IB_SMP_UNSUP_METH_ATTR; 1965 ret = reply(smp); 1966 goto bail; 1967 } 1968 1969 case IB_MGMT_METHOD_TRAP_REPRESS: 1970 if (smp->attr_id == IB_SMP_ATTR_NOTICE) 1971 ret = subn_trap_repress(smp, ibdev, port); 1972 else { 1973 smp->status |= IB_SMP_UNSUP_METH_ATTR; 1974 ret = reply(smp); 1975 } 1976 goto bail; 1977 1978 case IB_MGMT_METHOD_TRAP: 1979 case IB_MGMT_METHOD_REPORT: 1980 case IB_MGMT_METHOD_REPORT_RESP: 1981 case IB_MGMT_METHOD_GET_RESP: 1982 /* 1983 * The ib_mad module will call us to process responses 1984 * before checking for other consumers. 1985 * Just tell the caller to process it normally. 1986 */ 1987 ret = IB_MAD_RESULT_SUCCESS; 1988 goto bail; 1989 1990 case IB_MGMT_METHOD_SEND: 1991 if (ib_get_smp_direction(smp) && 1992 smp->attr_id == QIB_VENDOR_IPG) { 1993 ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PORT, 1994 smp->data[0]); 1995 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 1996 } else 1997 ret = IB_MAD_RESULT_SUCCESS; 1998 goto bail; 1999 2000 default: 2001 smp->status |= IB_SMP_UNSUP_METHOD; 2002 ret = reply(smp); 2003 } 2004 2005bail: 2006 return ret; 2007} 2008 2009static int process_perf(struct ib_device *ibdev, u8 port, 2010 const struct ib_mad *in_mad, 2011 struct ib_mad *out_mad) 2012{ 2013 struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad; 2014 int ret; 2015 2016 *out_mad = *in_mad; 2017 if (pmp->mad_hdr.class_version != 1) { 2018 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION; 2019 ret = reply((struct ib_smp *) pmp); 2020 goto bail; 2021 } 2022 2023 switch (pmp->mad_hdr.method) { 2024 case IB_MGMT_METHOD_GET: 2025 switch (pmp->mad_hdr.attr_id) { 2026 case IB_PMA_CLASS_PORT_INFO: 2027 ret = pma_get_classportinfo(pmp, ibdev); 2028 goto bail; 2029 case IB_PMA_PORT_SAMPLES_CONTROL: 2030 ret = pma_get_portsamplescontrol(pmp, ibdev, port); 2031 goto bail; 2032 case IB_PMA_PORT_SAMPLES_RESULT: 2033 ret = pma_get_portsamplesresult(pmp, ibdev, port); 2034 goto bail; 2035 case IB_PMA_PORT_SAMPLES_RESULT_EXT: 2036 ret = pma_get_portsamplesresult_ext(pmp, ibdev, port); 2037 goto bail; 2038 case IB_PMA_PORT_COUNTERS: 2039 ret = pma_get_portcounters(pmp, ibdev, port); 2040 goto bail; 2041 case IB_PMA_PORT_COUNTERS_EXT: 2042 ret = pma_get_portcounters_ext(pmp, ibdev, port); 2043 goto bail; 2044 case IB_PMA_PORT_COUNTERS_CONG: 2045 ret = pma_get_portcounters_cong(pmp, ibdev, port); 2046 goto bail; 2047 default: 2048 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; 2049 ret = reply((struct ib_smp *) pmp); 2050 goto bail; 2051 } 2052 2053 case IB_MGMT_METHOD_SET: 2054 switch (pmp->mad_hdr.attr_id) { 2055 case IB_PMA_PORT_SAMPLES_CONTROL: 2056 ret = pma_set_portsamplescontrol(pmp, ibdev, port); 2057 goto bail; 2058 case IB_PMA_PORT_COUNTERS: 2059 ret = pma_set_portcounters(pmp, ibdev, port); 2060 goto bail; 2061 case IB_PMA_PORT_COUNTERS_EXT: 2062 ret = pma_set_portcounters_ext(pmp, ibdev, port); 2063 goto bail; 2064 case IB_PMA_PORT_COUNTERS_CONG: 2065 ret = pma_set_portcounters_cong(pmp, ibdev, port); 2066 goto bail; 2067 default: 2068 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; 2069 ret = reply((struct ib_smp *) pmp); 2070 goto bail; 2071 } 2072 2073 case IB_MGMT_METHOD_TRAP: 2074 case IB_MGMT_METHOD_GET_RESP: 2075 /* 2076 * The ib_mad module will call us to process responses 2077 * before checking for other consumers. 2078 * Just tell the caller to process it normally. 2079 */ 2080 ret = IB_MAD_RESULT_SUCCESS; 2081 goto bail; 2082 2083 default: 2084 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD; 2085 ret = reply((struct ib_smp *) pmp); 2086 } 2087 2088bail: 2089 return ret; 2090} 2091 2092static int cc_get_classportinfo(struct ib_cc_mad *ccp, 2093 struct ib_device *ibdev) 2094{ 2095 struct ib_cc_classportinfo_attr *p = 2096 (struct ib_cc_classportinfo_attr *)ccp->mgmt_data; 2097 2098 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data)); 2099 2100 p->base_version = 1; 2101 p->class_version = 1; 2102 p->cap_mask = 0; 2103 2104 /* 2105 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec. 2106 */ 2107 p->resp_time_value = 18; 2108 2109 return reply((struct ib_smp *) ccp); 2110} 2111 2112static int cc_get_congestion_info(struct ib_cc_mad *ccp, 2113 struct ib_device *ibdev, u8 port) 2114{ 2115 struct ib_cc_info_attr *p = 2116 (struct ib_cc_info_attr *)ccp->mgmt_data; 2117 struct qib_ibport *ibp = to_iport(ibdev, port); 2118 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2119 2120 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data)); 2121 2122 p->congestion_info = 0; 2123 p->control_table_cap = ppd->cc_max_table_entries; 2124 2125 return reply((struct ib_smp *) ccp); 2126} 2127 2128static int cc_get_congestion_setting(struct ib_cc_mad *ccp, 2129 struct ib_device *ibdev, u8 port) 2130{ 2131 int i; 2132 struct ib_cc_congestion_setting_attr *p = 2133 (struct ib_cc_congestion_setting_attr *)ccp->mgmt_data; 2134 struct qib_ibport *ibp = to_iport(ibdev, port); 2135 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2136 struct ib_cc_congestion_entry_shadow *entries; 2137 2138 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data)); 2139 2140 spin_lock(&ppd->cc_shadow_lock); 2141 2142 entries = ppd->congestion_entries_shadow->entries; 2143 p->port_control = cpu_to_be16( 2144 ppd->congestion_entries_shadow->port_control); 2145 p->control_map = cpu_to_be16( 2146 ppd->congestion_entries_shadow->control_map); 2147 for (i = 0; i < IB_CC_CCS_ENTRIES; i++) { 2148 p->entries[i].ccti_increase = entries[i].ccti_increase; 2149 p->entries[i].ccti_timer = cpu_to_be16(entries[i].ccti_timer); 2150 p->entries[i].trigger_threshold = entries[i].trigger_threshold; 2151 p->entries[i].ccti_min = entries[i].ccti_min; 2152 } 2153 2154 spin_unlock(&ppd->cc_shadow_lock); 2155 2156 return reply((struct ib_smp *) ccp); 2157} 2158 2159static int cc_get_congestion_control_table(struct ib_cc_mad *ccp, 2160 struct ib_device *ibdev, u8 port) 2161{ 2162 struct ib_cc_table_attr *p = 2163 (struct ib_cc_table_attr *)ccp->mgmt_data; 2164 struct qib_ibport *ibp = to_iport(ibdev, port); 2165 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2166 u32 cct_block_index = be32_to_cpu(ccp->attr_mod); 2167 u32 max_cct_block; 2168 u32 cct_entry; 2169 struct ib_cc_table_entry_shadow *entries; 2170 int i; 2171 2172 /* Is the table index more than what is supported? */ 2173 if (cct_block_index > IB_CC_TABLE_CAP_DEFAULT - 1) 2174 goto bail; 2175 2176 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data)); 2177 2178 spin_lock(&ppd->cc_shadow_lock); 2179 2180 max_cct_block = 2181 (ppd->ccti_entries_shadow->ccti_last_entry + 1)/IB_CCT_ENTRIES; 2182 max_cct_block = max_cct_block ? max_cct_block - 1 : 0; 2183 2184 if (cct_block_index > max_cct_block) { 2185 spin_unlock(&ppd->cc_shadow_lock); 2186 goto bail; 2187 } 2188 2189 ccp->attr_mod = cpu_to_be32(cct_block_index); 2190 2191 cct_entry = IB_CCT_ENTRIES * (cct_block_index + 1); 2192 2193 cct_entry--; 2194 2195 p->ccti_limit = cpu_to_be16(cct_entry); 2196 2197 entries = &ppd->ccti_entries_shadow-> 2198 entries[IB_CCT_ENTRIES * cct_block_index]; 2199 cct_entry %= IB_CCT_ENTRIES; 2200 2201 for (i = 0; i <= cct_entry; i++) 2202 p->ccti_entries[i].entry = cpu_to_be16(entries[i].entry); 2203 2204 spin_unlock(&ppd->cc_shadow_lock); 2205 2206 return reply((struct ib_smp *) ccp); 2207 2208bail: 2209 return reply_failure((struct ib_smp *) ccp); 2210} 2211 2212static int cc_set_congestion_setting(struct ib_cc_mad *ccp, 2213 struct ib_device *ibdev, u8 port) 2214{ 2215 struct ib_cc_congestion_setting_attr *p = 2216 (struct ib_cc_congestion_setting_attr *)ccp->mgmt_data; 2217 struct qib_ibport *ibp = to_iport(ibdev, port); 2218 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2219 int i; 2220 2221 ppd->cc_sl_control_map = be16_to_cpu(p->control_map); 2222 2223 for (i = 0; i < IB_CC_CCS_ENTRIES; i++) { 2224 ppd->congestion_entries[i].ccti_increase = 2225 p->entries[i].ccti_increase; 2226 2227 ppd->congestion_entries[i].ccti_timer = 2228 be16_to_cpu(p->entries[i].ccti_timer); 2229 2230 ppd->congestion_entries[i].trigger_threshold = 2231 p->entries[i].trigger_threshold; 2232 2233 ppd->congestion_entries[i].ccti_min = 2234 p->entries[i].ccti_min; 2235 } 2236 2237 return reply((struct ib_smp *) ccp); 2238} 2239 2240static int cc_set_congestion_control_table(struct ib_cc_mad *ccp, 2241 struct ib_device *ibdev, u8 port) 2242{ 2243 struct ib_cc_table_attr *p = 2244 (struct ib_cc_table_attr *)ccp->mgmt_data; 2245 struct qib_ibport *ibp = to_iport(ibdev, port); 2246 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2247 u32 cct_block_index = be32_to_cpu(ccp->attr_mod); 2248 u32 cct_entry; 2249 struct ib_cc_table_entry_shadow *entries; 2250 int i; 2251 2252 /* Is the table index more than what is supported? */ 2253 if (cct_block_index > IB_CC_TABLE_CAP_DEFAULT - 1) 2254 goto bail; 2255 2256 /* If this packet is the first in the sequence then 2257 * zero the total table entry count. 2258 */ 2259 if (be16_to_cpu(p->ccti_limit) < IB_CCT_ENTRIES) 2260 ppd->total_cct_entry = 0; 2261 2262 cct_entry = (be16_to_cpu(p->ccti_limit))%IB_CCT_ENTRIES; 2263 2264 /* ccti_limit is 0 to 63 */ 2265 ppd->total_cct_entry += (cct_entry + 1); 2266 2267 if (ppd->total_cct_entry > ppd->cc_supported_table_entries) 2268 goto bail; 2269 2270 ppd->ccti_limit = be16_to_cpu(p->ccti_limit); 2271 2272 entries = ppd->ccti_entries + (IB_CCT_ENTRIES * cct_block_index); 2273 2274 for (i = 0; i <= cct_entry; i++) 2275 entries[i].entry = be16_to_cpu(p->ccti_entries[i].entry); 2276 2277 spin_lock(&ppd->cc_shadow_lock); 2278 2279 ppd->ccti_entries_shadow->ccti_last_entry = ppd->total_cct_entry - 1; 2280 memcpy(ppd->ccti_entries_shadow->entries, ppd->ccti_entries, 2281 (ppd->total_cct_entry * sizeof(struct ib_cc_table_entry))); 2282 2283 ppd->congestion_entries_shadow->port_control = IB_CC_CCS_PC_SL_BASED; 2284 ppd->congestion_entries_shadow->control_map = ppd->cc_sl_control_map; 2285 memcpy(ppd->congestion_entries_shadow->entries, ppd->congestion_entries, 2286 IB_CC_CCS_ENTRIES * sizeof(struct ib_cc_congestion_entry)); 2287 2288 spin_unlock(&ppd->cc_shadow_lock); 2289 2290 return reply((struct ib_smp *) ccp); 2291 2292bail: 2293 return reply_failure((struct ib_smp *) ccp); 2294} 2295 2296static int check_cc_key(struct qib_ibport *ibp, 2297 struct ib_cc_mad *ccp, int mad_flags) 2298{ 2299 return 0; 2300} 2301 2302static int process_cc(struct ib_device *ibdev, int mad_flags, 2303 u8 port, const struct ib_mad *in_mad, 2304 struct ib_mad *out_mad) 2305{ 2306 struct ib_cc_mad *ccp = (struct ib_cc_mad *)out_mad; 2307 struct qib_ibport *ibp = to_iport(ibdev, port); 2308 int ret; 2309 2310 *out_mad = *in_mad; 2311 2312 if (ccp->class_version != 2) { 2313 ccp->status |= IB_SMP_UNSUP_VERSION; 2314 ret = reply((struct ib_smp *)ccp); 2315 goto bail; 2316 } 2317 2318 ret = check_cc_key(ibp, ccp, mad_flags); 2319 if (ret) 2320 goto bail; 2321 2322 switch (ccp->method) { 2323 case IB_MGMT_METHOD_GET: 2324 switch (ccp->attr_id) { 2325 case IB_CC_ATTR_CLASSPORTINFO: 2326 ret = cc_get_classportinfo(ccp, ibdev); 2327 goto bail; 2328 2329 case IB_CC_ATTR_CONGESTION_INFO: 2330 ret = cc_get_congestion_info(ccp, ibdev, port); 2331 goto bail; 2332 2333 case IB_CC_ATTR_CA_CONGESTION_SETTING: 2334 ret = cc_get_congestion_setting(ccp, ibdev, port); 2335 goto bail; 2336 2337 case IB_CC_ATTR_CONGESTION_CONTROL_TABLE: 2338 ret = cc_get_congestion_control_table(ccp, ibdev, port); 2339 goto bail; 2340 2341 /* FALLTHROUGH */ 2342 default: 2343 ccp->status |= IB_SMP_UNSUP_METH_ATTR; 2344 ret = reply((struct ib_smp *) ccp); 2345 goto bail; 2346 } 2347 2348 case IB_MGMT_METHOD_SET: 2349 switch (ccp->attr_id) { 2350 case IB_CC_ATTR_CA_CONGESTION_SETTING: 2351 ret = cc_set_congestion_setting(ccp, ibdev, port); 2352 goto bail; 2353 2354 case IB_CC_ATTR_CONGESTION_CONTROL_TABLE: 2355 ret = cc_set_congestion_control_table(ccp, ibdev, port); 2356 goto bail; 2357 2358 /* FALLTHROUGH */ 2359 default: 2360 ccp->status |= IB_SMP_UNSUP_METH_ATTR; 2361 ret = reply((struct ib_smp *) ccp); 2362 goto bail; 2363 } 2364 2365 case IB_MGMT_METHOD_GET_RESP: 2366 /* 2367 * The ib_mad module will call us to process responses 2368 * before checking for other consumers. 2369 * Just tell the caller to process it normally. 2370 */ 2371 ret = IB_MAD_RESULT_SUCCESS; 2372 goto bail; 2373 2374 case IB_MGMT_METHOD_TRAP: 2375 default: 2376 ccp->status |= IB_SMP_UNSUP_METHOD; 2377 ret = reply((struct ib_smp *) ccp); 2378 } 2379 2380bail: 2381 return ret; 2382} 2383 2384/** 2385 * qib_process_mad - process an incoming MAD packet 2386 * @ibdev: the infiniband device this packet came in on 2387 * @mad_flags: MAD flags 2388 * @port: the port number this packet came in on 2389 * @in_wc: the work completion entry for this packet 2390 * @in_grh: the global route header for this packet 2391 * @in_mad: the incoming MAD 2392 * @out_mad: any outgoing MAD reply 2393 * 2394 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not 2395 * interested in processing. 2396 * 2397 * Note that the verbs framework has already done the MAD sanity checks, 2398 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE 2399 * MADs. 2400 * 2401 * This is called by the ib_mad module. 2402 */ 2403int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port, 2404 const struct ib_wc *in_wc, const struct ib_grh *in_grh, 2405 const struct ib_mad_hdr *in, size_t in_mad_size, 2406 struct ib_mad_hdr *out, size_t *out_mad_size, 2407 u16 *out_mad_pkey_index) 2408{ 2409 int ret; 2410 struct qib_ibport *ibp = to_iport(ibdev, port); 2411 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2412 const struct ib_mad *in_mad = (const struct ib_mad *)in; 2413 struct ib_mad *out_mad = (struct ib_mad *)out; 2414 2415 if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) || 2416 *out_mad_size != sizeof(*out_mad))) 2417 return IB_MAD_RESULT_FAILURE; 2418 2419 switch (in_mad->mad_hdr.mgmt_class) { 2420 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: 2421 case IB_MGMT_CLASS_SUBN_LID_ROUTED: 2422 ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad); 2423 goto bail; 2424 2425 case IB_MGMT_CLASS_PERF_MGMT: 2426 ret = process_perf(ibdev, port, in_mad, out_mad); 2427 goto bail; 2428 2429 case IB_MGMT_CLASS_CONG_MGMT: 2430 if (!ppd->congestion_entries_shadow || 2431 !qib_cc_table_size) { 2432 ret = IB_MAD_RESULT_SUCCESS; 2433 goto bail; 2434 } 2435 ret = process_cc(ibdev, mad_flags, port, in_mad, out_mad); 2436 goto bail; 2437 2438 default: 2439 ret = IB_MAD_RESULT_SUCCESS; 2440 } 2441 2442bail: 2443 return ret; 2444} 2445 2446static void send_handler(struct ib_mad_agent *agent, 2447 struct ib_mad_send_wc *mad_send_wc) 2448{ 2449 ib_free_send_mad(mad_send_wc->send_buf); 2450} 2451 2452static void xmit_wait_timer_func(unsigned long opaque) 2453{ 2454 struct qib_pportdata *ppd = (struct qib_pportdata *)opaque; 2455 struct qib_devdata *dd = dd_from_ppd(ppd); 2456 unsigned long flags; 2457 u8 status; 2458 2459 spin_lock_irqsave(&ppd->ibport_data.lock, flags); 2460 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_SAMPLE) { 2461 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); 2462 if (status == IB_PMA_SAMPLE_STATUS_DONE) { 2463 /* save counter cache */ 2464 cache_hw_sample_counters(ppd); 2465 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; 2466 } else 2467 goto done; 2468 } 2469 ppd->cong_stats.counter = xmit_wait_get_value_delta(ppd); 2470 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 0x0); 2471done: 2472 spin_unlock_irqrestore(&ppd->ibport_data.lock, flags); 2473 mod_timer(&ppd->cong_stats.timer, jiffies + HZ); 2474} 2475 2476int qib_create_agents(struct qib_ibdev *dev) 2477{ 2478 struct qib_devdata *dd = dd_from_dev(dev); 2479 struct ib_mad_agent *agent; 2480 struct qib_ibport *ibp; 2481 int p; 2482 int ret; 2483 2484 for (p = 0; p < dd->num_pports; p++) { 2485 ibp = &dd->pport[p].ibport_data; 2486 agent = ib_register_mad_agent(&dev->ibdev, p + 1, IB_QPT_SMI, 2487 NULL, 0, send_handler, 2488 NULL, NULL, 0); 2489 if (IS_ERR(agent)) { 2490 ret = PTR_ERR(agent); 2491 goto err; 2492 } 2493 2494 /* Initialize xmit_wait structure */ 2495 dd->pport[p].cong_stats.counter = 0; 2496 init_timer(&dd->pport[p].cong_stats.timer); 2497 dd->pport[p].cong_stats.timer.function = xmit_wait_timer_func; 2498 dd->pport[p].cong_stats.timer.data = 2499 (unsigned long)(&dd->pport[p]); 2500 dd->pport[p].cong_stats.timer.expires = 0; 2501 add_timer(&dd->pport[p].cong_stats.timer); 2502 2503 ibp->send_agent = agent; 2504 } 2505 2506 return 0; 2507 2508err: 2509 for (p = 0; p < dd->num_pports; p++) { 2510 ibp = &dd->pport[p].ibport_data; 2511 if (ibp->send_agent) { 2512 agent = ibp->send_agent; 2513 ibp->send_agent = NULL; 2514 ib_unregister_mad_agent(agent); 2515 } 2516 } 2517 2518 return ret; 2519} 2520 2521void qib_free_agents(struct qib_ibdev *dev) 2522{ 2523 struct qib_devdata *dd = dd_from_dev(dev); 2524 struct ib_mad_agent *agent; 2525 struct qib_ibport *ibp; 2526 int p; 2527 2528 for (p = 0; p < dd->num_pports; p++) { 2529 ibp = &dd->pport[p].ibport_data; 2530 if (ibp->send_agent) { 2531 agent = ibp->send_agent; 2532 ibp->send_agent = NULL; 2533 ib_unregister_mad_agent(agent); 2534 } 2535 if (ibp->sm_ah) { 2536 ib_destroy_ah(&ibp->sm_ah->ibah); 2537 ibp->sm_ah = NULL; 2538 } 2539 if (dd->pport[p].cong_stats.timer.data) 2540 del_timer_sync(&dd->pport[p].cong_stats.timer); 2541 } 2542} 2543