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 40 static 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 52 static 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 64 static 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->rvp.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->rvp.trap_timeout && 83 time_before(jiffies, ibp->rvp.trap_timeout)) 84 return; 85 86 send_buf = ib_create_send_mad(agent, 0, 0, 0, IB_MGMT_MAD_HDR, 87 IB_MGMT_MAD_DATA, GFP_ATOMIC, 88 IB_MGMT_BASE_VERSION); 89 if (IS_ERR(send_buf)) 90 return; 91 92 smp = send_buf->mad; 93 smp->base_version = IB_MGMT_BASE_VERSION; 94 smp->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 95 smp->class_version = 1; 96 smp->method = IB_MGMT_METHOD_TRAP; 97 ibp->rvp.tid++; 98 smp->tid = cpu_to_be64(ibp->rvp.tid); 99 smp->attr_id = IB_SMP_ATTR_NOTICE; 100 /* o14-1: smp->mkey = 0; */ 101 memcpy(smp->data, data, len); 102 103 spin_lock_irqsave(&ibp->rvp.lock, flags); 104 if (!ibp->rvp.sm_ah) { 105 if (ibp->rvp.sm_lid != be16_to_cpu(IB_LID_PERMISSIVE)) { 106 struct ib_ah *ah; 107 108 ah = qib_create_qp0_ah(ibp, ibp->rvp.sm_lid); 109 if (IS_ERR(ah)) 110 ret = PTR_ERR(ah); 111 else { 112 send_buf->ah = ah; 113 ibp->rvp.sm_ah = ibah_to_rvtah(ah); 114 ret = 0; 115 } 116 } else 117 ret = -EINVAL; 118 } else { 119 send_buf->ah = &ibp->rvp.sm_ah->ibah; 120 ret = 0; 121 } 122 spin_unlock_irqrestore(&ibp->rvp.lock, flags); 123 124 if (!ret) 125 ret = ib_post_send_mad(send_buf, NULL); 126 if (!ret) { 127 /* 4.096 usec. */ 128 timeout = (4096 * (1UL << ibp->rvp.subnet_timeout)) / 1000; 129 ibp->rvp.trap_timeout = jiffies + usecs_to_jiffies(timeout); 130 } else { 131 ib_free_send_mad(send_buf); 132 ibp->rvp.trap_timeout = 0; 133 } 134 } 135 136 /* 137 * Send a bad [PQ]_Key trap (ch. 14.3.8). 138 */ 139 void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl, 140 u32 qp1, u32 qp2, __be16 lid1, __be16 lid2) 141 { 142 struct ib_mad_notice_attr data; 143 144 if (trap_num == IB_NOTICE_TRAP_BAD_PKEY) 145 ibp->rvp.pkey_violations++; 146 else 147 ibp->rvp.qkey_violations++; 148 ibp->rvp.n_pkt_drops++; 149 150 /* Send violation trap */ 151 data.generic_type = IB_NOTICE_TYPE_SECURITY; 152 data.prod_type_msb = 0; 153 data.prod_type_lsb = IB_NOTICE_PROD_CA; 154 data.trap_num = trap_num; 155 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); 156 data.toggle_count = 0; 157 memset(&data.details, 0, sizeof(data.details)); 158 data.details.ntc_257_258.lid1 = lid1; 159 data.details.ntc_257_258.lid2 = lid2; 160 data.details.ntc_257_258.key = cpu_to_be32(key); 161 data.details.ntc_257_258.sl_qp1 = cpu_to_be32((sl << 28) | qp1); 162 data.details.ntc_257_258.qp2 = cpu_to_be32(qp2); 163 164 qib_send_trap(ibp, &data, sizeof(data)); 165 } 166 167 /* 168 * Send a bad M_Key trap (ch. 14.3.9). 169 */ 170 static void qib_bad_mkey(struct qib_ibport *ibp, struct ib_smp *smp) 171 { 172 struct ib_mad_notice_attr data; 173 174 /* Send violation trap */ 175 data.generic_type = IB_NOTICE_TYPE_SECURITY; 176 data.prod_type_msb = 0; 177 data.prod_type_lsb = IB_NOTICE_PROD_CA; 178 data.trap_num = IB_NOTICE_TRAP_BAD_MKEY; 179 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); 180 data.toggle_count = 0; 181 memset(&data.details, 0, sizeof(data.details)); 182 data.details.ntc_256.lid = data.issuer_lid; 183 data.details.ntc_256.method = smp->method; 184 data.details.ntc_256.attr_id = smp->attr_id; 185 data.details.ntc_256.attr_mod = smp->attr_mod; 186 data.details.ntc_256.mkey = smp->mkey; 187 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { 188 u8 hop_cnt; 189 190 data.details.ntc_256.dr_slid = smp->dr_slid; 191 data.details.ntc_256.dr_trunc_hop = IB_NOTICE_TRAP_DR_NOTICE; 192 hop_cnt = smp->hop_cnt; 193 if (hop_cnt > ARRAY_SIZE(data.details.ntc_256.dr_rtn_path)) { 194 data.details.ntc_256.dr_trunc_hop |= 195 IB_NOTICE_TRAP_DR_TRUNC; 196 hop_cnt = ARRAY_SIZE(data.details.ntc_256.dr_rtn_path); 197 } 198 data.details.ntc_256.dr_trunc_hop |= hop_cnt; 199 memcpy(data.details.ntc_256.dr_rtn_path, smp->return_path, 200 hop_cnt); 201 } 202 203 qib_send_trap(ibp, &data, sizeof(data)); 204 } 205 206 /* 207 * Send a Port Capability Mask Changed trap (ch. 14.3.11). 208 */ 209 void qib_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num) 210 { 211 struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi); 212 struct qib_devdata *dd = dd_from_dev(ibdev); 213 struct qib_ibport *ibp = &dd->pport[port_num - 1].ibport_data; 214 struct ib_mad_notice_attr data; 215 216 data.generic_type = IB_NOTICE_TYPE_INFO; 217 data.prod_type_msb = 0; 218 data.prod_type_lsb = IB_NOTICE_PROD_CA; 219 data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG; 220 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); 221 data.toggle_count = 0; 222 memset(&data.details, 0, sizeof(data.details)); 223 data.details.ntc_144.lid = data.issuer_lid; 224 data.details.ntc_144.new_cap_mask = 225 cpu_to_be32(ibp->rvp.port_cap_flags); 226 qib_send_trap(ibp, &data, sizeof(data)); 227 } 228 229 /* 230 * Send a System Image GUID Changed trap (ch. 14.3.12). 231 */ 232 void qib_sys_guid_chg(struct qib_ibport *ibp) 233 { 234 struct ib_mad_notice_attr data; 235 236 data.generic_type = IB_NOTICE_TYPE_INFO; 237 data.prod_type_msb = 0; 238 data.prod_type_lsb = IB_NOTICE_PROD_CA; 239 data.trap_num = IB_NOTICE_TRAP_SYS_GUID_CHG; 240 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); 241 data.toggle_count = 0; 242 memset(&data.details, 0, sizeof(data.details)); 243 data.details.ntc_145.lid = data.issuer_lid; 244 data.details.ntc_145.new_sys_guid = ib_qib_sys_image_guid; 245 246 qib_send_trap(ibp, &data, sizeof(data)); 247 } 248 249 /* 250 * Send a Node Description Changed trap (ch. 14.3.13). 251 */ 252 void qib_node_desc_chg(struct qib_ibport *ibp) 253 { 254 struct ib_mad_notice_attr data; 255 256 data.generic_type = IB_NOTICE_TYPE_INFO; 257 data.prod_type_msb = 0; 258 data.prod_type_lsb = IB_NOTICE_PROD_CA; 259 data.trap_num = IB_NOTICE_TRAP_CAP_MASK_CHG; 260 data.issuer_lid = cpu_to_be16(ppd_from_ibp(ibp)->lid); 261 data.toggle_count = 0; 262 memset(&data.details, 0, sizeof(data.details)); 263 data.details.ntc_144.lid = data.issuer_lid; 264 data.details.ntc_144.local_changes = 1; 265 data.details.ntc_144.change_flags = IB_NOTICE_TRAP_NODE_DESC_CHG; 266 267 qib_send_trap(ibp, &data, sizeof(data)); 268 } 269 270 static int subn_get_nodedescription(struct ib_smp *smp, 271 struct ib_device *ibdev) 272 { 273 if (smp->attr_mod) 274 smp->status |= IB_SMP_INVALID_FIELD; 275 276 memcpy(smp->data, ibdev->node_desc, sizeof(smp->data)); 277 278 return reply(smp); 279 } 280 281 static int subn_get_nodeinfo(struct ib_smp *smp, struct ib_device *ibdev, 282 u8 port) 283 { 284 struct ib_node_info *nip = (struct ib_node_info *)&smp->data; 285 struct qib_devdata *dd = dd_from_ibdev(ibdev); 286 u32 vendor, majrev, minrev; 287 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ 288 289 /* GUID 0 is illegal */ 290 if (smp->attr_mod || pidx >= dd->num_pports || 291 dd->pport[pidx].guid == 0) 292 smp->status |= IB_SMP_INVALID_FIELD; 293 else 294 nip->port_guid = dd->pport[pidx].guid; 295 296 nip->base_version = 1; 297 nip->class_version = 1; 298 nip->node_type = 1; /* channel adapter */ 299 nip->num_ports = ibdev->phys_port_cnt; 300 /* This is already in network order */ 301 nip->sys_guid = ib_qib_sys_image_guid; 302 nip->node_guid = dd->pport->guid; /* Use first-port GUID as node */ 303 nip->partition_cap = cpu_to_be16(qib_get_npkeys(dd)); 304 nip->device_id = cpu_to_be16(dd->deviceid); 305 majrev = dd->majrev; 306 minrev = dd->minrev; 307 nip->revision = cpu_to_be32((majrev << 16) | minrev); 308 nip->local_port_num = port; 309 vendor = dd->vendorid; 310 nip->vendor_id[0] = QIB_SRC_OUI_1; 311 nip->vendor_id[1] = QIB_SRC_OUI_2; 312 nip->vendor_id[2] = QIB_SRC_OUI_3; 313 314 return reply(smp); 315 } 316 317 static int subn_get_guidinfo(struct ib_smp *smp, struct ib_device *ibdev, 318 u8 port) 319 { 320 struct qib_devdata *dd = dd_from_ibdev(ibdev); 321 u32 startgx = 8 * be32_to_cpu(smp->attr_mod); 322 __be64 *p = (__be64 *) smp->data; 323 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ 324 325 /* 32 blocks of 8 64-bit GUIDs per block */ 326 327 memset(smp->data, 0, sizeof(smp->data)); 328 329 if (startgx == 0 && pidx < dd->num_pports) { 330 struct qib_pportdata *ppd = dd->pport + pidx; 331 struct qib_ibport *ibp = &ppd->ibport_data; 332 __be64 g = ppd->guid; 333 unsigned i; 334 335 /* GUID 0 is illegal */ 336 if (g == 0) 337 smp->status |= IB_SMP_INVALID_FIELD; 338 else { 339 /* The first is a copy of the read-only HW GUID. */ 340 p[0] = g; 341 for (i = 1; i < QIB_GUIDS_PER_PORT; i++) 342 p[i] = ibp->guids[i - 1]; 343 } 344 } else 345 smp->status |= IB_SMP_INVALID_FIELD; 346 347 return reply(smp); 348 } 349 350 static void set_link_width_enabled(struct qib_pportdata *ppd, u32 w) 351 { 352 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LWID_ENB, w); 353 } 354 355 static void set_link_speed_enabled(struct qib_pportdata *ppd, u32 s) 356 { 357 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_SPD_ENB, s); 358 } 359 360 static int get_overrunthreshold(struct qib_pportdata *ppd) 361 { 362 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH); 363 } 364 365 /** 366 * set_overrunthreshold - set the overrun threshold 367 * @ppd: the physical port data 368 * @n: the new threshold 369 * 370 * Note that this will only take effect when the link state changes. 371 */ 372 static int set_overrunthreshold(struct qib_pportdata *ppd, unsigned n) 373 { 374 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OVERRUN_THRESH, 375 (u32)n); 376 return 0; 377 } 378 379 static int get_phyerrthreshold(struct qib_pportdata *ppd) 380 { 381 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH); 382 } 383 384 /** 385 * set_phyerrthreshold - set the physical error threshold 386 * @ppd: the physical port data 387 * @n: the new threshold 388 * 389 * Note that this will only take effect when the link state changes. 390 */ 391 static int set_phyerrthreshold(struct qib_pportdata *ppd, unsigned n) 392 { 393 (void) ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PHYERR_THRESH, 394 (u32)n); 395 return 0; 396 } 397 398 /** 399 * get_linkdowndefaultstate - get the default linkdown state 400 * @ppd: the physical port data 401 * 402 * Returns zero if the default is POLL, 1 if the default is SLEEP. 403 */ 404 static int get_linkdowndefaultstate(struct qib_pportdata *ppd) 405 { 406 return ppd->dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT) == 407 IB_LINKINITCMD_SLEEP; 408 } 409 410 static int check_mkey(struct qib_ibport *ibp, struct ib_smp *smp, int mad_flags) 411 { 412 int valid_mkey = 0; 413 int ret = 0; 414 415 /* Is the mkey in the process of expiring? */ 416 if (ibp->rvp.mkey_lease_timeout && 417 time_after_eq(jiffies, ibp->rvp.mkey_lease_timeout)) { 418 /* Clear timeout and mkey protection field. */ 419 ibp->rvp.mkey_lease_timeout = 0; 420 ibp->rvp.mkeyprot = 0; 421 } 422 423 if ((mad_flags & IB_MAD_IGNORE_MKEY) || ibp->rvp.mkey == 0 || 424 ibp->rvp.mkey == smp->mkey) 425 valid_mkey = 1; 426 427 /* Unset lease timeout on any valid Get/Set/TrapRepress */ 428 if (valid_mkey && ibp->rvp.mkey_lease_timeout && 429 (smp->method == IB_MGMT_METHOD_GET || 430 smp->method == IB_MGMT_METHOD_SET || 431 smp->method == IB_MGMT_METHOD_TRAP_REPRESS)) 432 ibp->rvp.mkey_lease_timeout = 0; 433 434 if (!valid_mkey) { 435 switch (smp->method) { 436 case IB_MGMT_METHOD_GET: 437 /* Bad mkey not a violation below level 2 */ 438 if (ibp->rvp.mkeyprot < 2) 439 break; 440 case IB_MGMT_METHOD_SET: 441 case IB_MGMT_METHOD_TRAP_REPRESS: 442 if (ibp->rvp.mkey_violations != 0xFFFF) 443 ++ibp->rvp.mkey_violations; 444 if (!ibp->rvp.mkey_lease_timeout && 445 ibp->rvp.mkey_lease_period) 446 ibp->rvp.mkey_lease_timeout = jiffies + 447 ibp->rvp.mkey_lease_period * HZ; 448 /* Generate a trap notice. */ 449 qib_bad_mkey(ibp, smp); 450 ret = 1; 451 } 452 } 453 454 return ret; 455 } 456 457 static int subn_get_portinfo(struct ib_smp *smp, struct ib_device *ibdev, 458 u8 port) 459 { 460 struct qib_devdata *dd; 461 struct qib_pportdata *ppd; 462 struct qib_ibport *ibp; 463 struct ib_port_info *pip = (struct ib_port_info *)smp->data; 464 u8 mtu; 465 int ret; 466 u32 state; 467 u32 port_num = be32_to_cpu(smp->attr_mod); 468 469 if (port_num == 0) 470 port_num = port; 471 else { 472 if (port_num > ibdev->phys_port_cnt) { 473 smp->status |= IB_SMP_INVALID_FIELD; 474 ret = reply(smp); 475 goto bail; 476 } 477 if (port_num != port) { 478 ibp = to_iport(ibdev, port_num); 479 ret = check_mkey(ibp, smp, 0); 480 if (ret) { 481 ret = IB_MAD_RESULT_FAILURE; 482 goto bail; 483 } 484 } 485 } 486 487 dd = dd_from_ibdev(ibdev); 488 /* IB numbers ports from 1, hdw from 0 */ 489 ppd = dd->pport + (port_num - 1); 490 ibp = &ppd->ibport_data; 491 492 /* Clear all fields. Only set the non-zero fields. */ 493 memset(smp->data, 0, sizeof(smp->data)); 494 495 /* Only return the mkey if the protection field allows it. */ 496 if (!(smp->method == IB_MGMT_METHOD_GET && 497 ibp->rvp.mkey != smp->mkey && 498 ibp->rvp.mkeyprot == 1)) 499 pip->mkey = ibp->rvp.mkey; 500 pip->gid_prefix = ibp->rvp.gid_prefix; 501 pip->lid = cpu_to_be16(ppd->lid); 502 pip->sm_lid = cpu_to_be16(ibp->rvp.sm_lid); 503 pip->cap_mask = cpu_to_be32(ibp->rvp.port_cap_flags); 504 /* pip->diag_code; */ 505 pip->mkey_lease_period = cpu_to_be16(ibp->rvp.mkey_lease_period); 506 pip->local_port_num = port; 507 pip->link_width_enabled = ppd->link_width_enabled; 508 pip->link_width_supported = ppd->link_width_supported; 509 pip->link_width_active = ppd->link_width_active; 510 state = dd->f_iblink_state(ppd->lastibcstat); 511 pip->linkspeed_portstate = ppd->link_speed_supported << 4 | state; 512 513 pip->portphysstate_linkdown = 514 (dd->f_ibphys_portstate(ppd->lastibcstat) << 4) | 515 (get_linkdowndefaultstate(ppd) ? 1 : 2); 516 pip->mkeyprot_resv_lmc = (ibp->rvp.mkeyprot << 6) | ppd->lmc; 517 pip->linkspeedactive_enabled = (ppd->link_speed_active << 4) | 518 ppd->link_speed_enabled; 519 switch (ppd->ibmtu) { 520 default: /* something is wrong; fall through */ 521 case 4096: 522 mtu = IB_MTU_4096; 523 break; 524 case 2048: 525 mtu = IB_MTU_2048; 526 break; 527 case 1024: 528 mtu = IB_MTU_1024; 529 break; 530 case 512: 531 mtu = IB_MTU_512; 532 break; 533 case 256: 534 mtu = IB_MTU_256; 535 break; 536 } 537 pip->neighbormtu_mastersmsl = (mtu << 4) | ibp->rvp.sm_sl; 538 pip->vlcap_inittype = ppd->vls_supported << 4; /* InitType = 0 */ 539 pip->vl_high_limit = ibp->rvp.vl_high_limit; 540 pip->vl_arb_high_cap = 541 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_CAP); 542 pip->vl_arb_low_cap = 543 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_VL_LOW_CAP); 544 /* InitTypeReply = 0 */ 545 pip->inittypereply_mtucap = qib_ibmtu ? qib_ibmtu : IB_MTU_4096; 546 /* HCAs ignore VLStallCount and HOQLife */ 547 /* pip->vlstallcnt_hoqlife; */ 548 pip->operationalvl_pei_peo_fpi_fpo = 549 dd->f_get_ib_cfg(ppd, QIB_IB_CFG_OP_VLS) << 4; 550 pip->mkey_violations = cpu_to_be16(ibp->rvp.mkey_violations); 551 /* P_KeyViolations are counted by hardware. */ 552 pip->pkey_violations = cpu_to_be16(ibp->rvp.pkey_violations); 553 pip->qkey_violations = cpu_to_be16(ibp->rvp.qkey_violations); 554 /* Only the hardware GUID is supported for now */ 555 pip->guid_cap = QIB_GUIDS_PER_PORT; 556 pip->clientrereg_resv_subnetto = ibp->rvp.subnet_timeout; 557 /* 32.768 usec. response time (guessing) */ 558 pip->resv_resptimevalue = 3; 559 pip->localphyerrors_overrunerrors = 560 (get_phyerrthreshold(ppd) << 4) | 561 get_overrunthreshold(ppd); 562 /* pip->max_credit_hint; */ 563 if (ibp->rvp.port_cap_flags & IB_PORT_LINK_LATENCY_SUP) { 564 u32 v; 565 566 v = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_LINKLATENCY); 567 pip->link_roundtrip_latency[0] = v >> 16; 568 pip->link_roundtrip_latency[1] = v >> 8; 569 pip->link_roundtrip_latency[2] = v; 570 } 571 572 ret = reply(smp); 573 574 bail: 575 return ret; 576 } 577 578 /** 579 * get_pkeys - return the PKEY table 580 * @dd: the qlogic_ib device 581 * @port: the IB port number 582 * @pkeys: the pkey table is placed here 583 */ 584 static int get_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys) 585 { 586 struct qib_pportdata *ppd = dd->pport + port - 1; 587 /* 588 * always a kernel context, no locking needed. 589 * If we get here with ppd setup, no need to check 590 * that pd is valid. 591 */ 592 struct qib_ctxtdata *rcd = dd->rcd[ppd->hw_pidx]; 593 594 memcpy(pkeys, rcd->pkeys, sizeof(rcd->pkeys)); 595 596 return 0; 597 } 598 599 static int subn_get_pkeytable(struct ib_smp *smp, struct ib_device *ibdev, 600 u8 port) 601 { 602 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); 603 u16 *p = (u16 *) smp->data; 604 __be16 *q = (__be16 *) smp->data; 605 606 /* 64 blocks of 32 16-bit P_Key entries */ 607 608 memset(smp->data, 0, sizeof(smp->data)); 609 if (startpx == 0) { 610 struct qib_devdata *dd = dd_from_ibdev(ibdev); 611 unsigned i, n = qib_get_npkeys(dd); 612 613 get_pkeys(dd, port, p); 614 615 for (i = 0; i < n; i++) 616 q[i] = cpu_to_be16(p[i]); 617 } else 618 smp->status |= IB_SMP_INVALID_FIELD; 619 620 return reply(smp); 621 } 622 623 static int subn_set_guidinfo(struct ib_smp *smp, struct ib_device *ibdev, 624 u8 port) 625 { 626 struct qib_devdata *dd = dd_from_ibdev(ibdev); 627 u32 startgx = 8 * be32_to_cpu(smp->attr_mod); 628 __be64 *p = (__be64 *) smp->data; 629 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ 630 631 /* 32 blocks of 8 64-bit GUIDs per block */ 632 633 if (startgx == 0 && pidx < dd->num_pports) { 634 struct qib_pportdata *ppd = dd->pport + pidx; 635 struct qib_ibport *ibp = &ppd->ibport_data; 636 unsigned i; 637 638 /* The first entry is read-only. */ 639 for (i = 1; i < QIB_GUIDS_PER_PORT; i++) 640 ibp->guids[i - 1] = p[i]; 641 } else 642 smp->status |= IB_SMP_INVALID_FIELD; 643 644 /* The only GUID we support is the first read-only entry. */ 645 return subn_get_guidinfo(smp, ibdev, port); 646 } 647 648 /** 649 * subn_set_portinfo - set port information 650 * @smp: the incoming SM packet 651 * @ibdev: the infiniband device 652 * @port: the port on the device 653 * 654 * Set Portinfo (see ch. 14.2.5.6). 655 */ 656 static int subn_set_portinfo(struct ib_smp *smp, struct ib_device *ibdev, 657 u8 port) 658 { 659 struct ib_port_info *pip = (struct ib_port_info *)smp->data; 660 struct ib_event event; 661 struct qib_devdata *dd; 662 struct qib_pportdata *ppd; 663 struct qib_ibport *ibp; 664 u8 clientrereg = (pip->clientrereg_resv_subnetto & 0x80); 665 unsigned long flags; 666 u16 lid, smlid; 667 u8 lwe; 668 u8 lse; 669 u8 state; 670 u8 vls; 671 u8 msl; 672 u16 lstate; 673 int ret, ore, mtu; 674 u32 port_num = be32_to_cpu(smp->attr_mod); 675 676 if (port_num == 0) 677 port_num = port; 678 else { 679 if (port_num > ibdev->phys_port_cnt) 680 goto err; 681 /* Port attributes can only be set on the receiving port */ 682 if (port_num != port) 683 goto get_only; 684 } 685 686 dd = dd_from_ibdev(ibdev); 687 /* IB numbers ports from 1, hdw from 0 */ 688 ppd = dd->pport + (port_num - 1); 689 ibp = &ppd->ibport_data; 690 event.device = ibdev; 691 event.element.port_num = port; 692 693 ibp->rvp.mkey = pip->mkey; 694 ibp->rvp.gid_prefix = pip->gid_prefix; 695 ibp->rvp.mkey_lease_period = be16_to_cpu(pip->mkey_lease_period); 696 697 lid = be16_to_cpu(pip->lid); 698 /* Must be a valid unicast LID address. */ 699 if (lid == 0 || lid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) 700 smp->status |= IB_SMP_INVALID_FIELD; 701 else if (ppd->lid != lid || ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) { 702 if (ppd->lid != lid) 703 qib_set_uevent_bits(ppd, _QIB_EVENT_LID_CHANGE_BIT); 704 if (ppd->lmc != (pip->mkeyprot_resv_lmc & 7)) 705 qib_set_uevent_bits(ppd, _QIB_EVENT_LMC_CHANGE_BIT); 706 qib_set_lid(ppd, lid, pip->mkeyprot_resv_lmc & 7); 707 event.event = IB_EVENT_LID_CHANGE; 708 ib_dispatch_event(&event); 709 } 710 711 smlid = be16_to_cpu(pip->sm_lid); 712 msl = pip->neighbormtu_mastersmsl & 0xF; 713 /* Must be a valid unicast LID address. */ 714 if (smlid == 0 || smlid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) 715 smp->status |= IB_SMP_INVALID_FIELD; 716 else if (smlid != ibp->rvp.sm_lid || msl != ibp->rvp.sm_sl) { 717 spin_lock_irqsave(&ibp->rvp.lock, flags); 718 if (ibp->rvp.sm_ah) { 719 if (smlid != ibp->rvp.sm_lid) 720 ibp->rvp.sm_ah->attr.dlid = smlid; 721 if (msl != ibp->rvp.sm_sl) 722 ibp->rvp.sm_ah->attr.sl = msl; 723 } 724 spin_unlock_irqrestore(&ibp->rvp.lock, flags); 725 if (smlid != ibp->rvp.sm_lid) 726 ibp->rvp.sm_lid = smlid; 727 if (msl != ibp->rvp.sm_sl) 728 ibp->rvp.sm_sl = msl; 729 event.event = IB_EVENT_SM_CHANGE; 730 ib_dispatch_event(&event); 731 } 732 733 /* Allow 1x or 4x to be set (see 14.2.6.6). */ 734 lwe = pip->link_width_enabled; 735 if (lwe) { 736 if (lwe == 0xFF) 737 set_link_width_enabled(ppd, ppd->link_width_supported); 738 else if (lwe >= 16 || (lwe & ~ppd->link_width_supported)) 739 smp->status |= IB_SMP_INVALID_FIELD; 740 else if (lwe != ppd->link_width_enabled) 741 set_link_width_enabled(ppd, lwe); 742 } 743 744 lse = pip->linkspeedactive_enabled & 0xF; 745 if (lse) { 746 /* 747 * The IB 1.2 spec. only allows link speed values 748 * 1, 3, 5, 7, 15. 1.2.1 extended to allow specific 749 * speeds. 750 */ 751 if (lse == 15) 752 set_link_speed_enabled(ppd, 753 ppd->link_speed_supported); 754 else if (lse >= 8 || (lse & ~ppd->link_speed_supported)) 755 smp->status |= IB_SMP_INVALID_FIELD; 756 else if (lse != ppd->link_speed_enabled) 757 set_link_speed_enabled(ppd, lse); 758 } 759 760 /* Set link down default state. */ 761 switch (pip->portphysstate_linkdown & 0xF) { 762 case 0: /* NOP */ 763 break; 764 case 1: /* SLEEP */ 765 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT, 766 IB_LINKINITCMD_SLEEP); 767 break; 768 case 2: /* POLL */ 769 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_LINKDEFAULT, 770 IB_LINKINITCMD_POLL); 771 break; 772 default: 773 smp->status |= IB_SMP_INVALID_FIELD; 774 } 775 776 ibp->rvp.mkeyprot = pip->mkeyprot_resv_lmc >> 6; 777 ibp->rvp.vl_high_limit = pip->vl_high_limit; 778 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_VL_HIGH_LIMIT, 779 ibp->rvp.vl_high_limit); 780 781 mtu = ib_mtu_enum_to_int((pip->neighbormtu_mastersmsl >> 4) & 0xF); 782 if (mtu == -1) 783 smp->status |= IB_SMP_INVALID_FIELD; 784 else 785 qib_set_mtu(ppd, mtu); 786 787 /* Set operational VLs */ 788 vls = (pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF; 789 if (vls) { 790 if (vls > ppd->vls_supported) 791 smp->status |= IB_SMP_INVALID_FIELD; 792 else 793 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_OP_VLS, vls); 794 } 795 796 if (pip->mkey_violations == 0) 797 ibp->rvp.mkey_violations = 0; 798 799 if (pip->pkey_violations == 0) 800 ibp->rvp.pkey_violations = 0; 801 802 if (pip->qkey_violations == 0) 803 ibp->rvp.qkey_violations = 0; 804 805 ore = pip->localphyerrors_overrunerrors; 806 if (set_phyerrthreshold(ppd, (ore >> 4) & 0xF)) 807 smp->status |= IB_SMP_INVALID_FIELD; 808 809 if (set_overrunthreshold(ppd, (ore & 0xF))) 810 smp->status |= IB_SMP_INVALID_FIELD; 811 812 ibp->rvp.subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F; 813 814 /* 815 * Do the port state change now that the other link parameters 816 * have been set. 817 * Changing the port physical state only makes sense if the link 818 * is down or is being set to down. 819 */ 820 state = pip->linkspeed_portstate & 0xF; 821 lstate = (pip->portphysstate_linkdown >> 4) & 0xF; 822 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP)) 823 smp->status |= IB_SMP_INVALID_FIELD; 824 825 /* 826 * Only state changes of DOWN, ARM, and ACTIVE are valid 827 * and must be in the correct state to take effect (see 7.2.6). 828 */ 829 switch (state) { 830 case IB_PORT_NOP: 831 if (lstate == 0) 832 break; 833 /* FALLTHROUGH */ 834 case IB_PORT_DOWN: 835 if (lstate == 0) 836 lstate = QIB_IB_LINKDOWN_ONLY; 837 else if (lstate == 1) 838 lstate = QIB_IB_LINKDOWN_SLEEP; 839 else if (lstate == 2) 840 lstate = QIB_IB_LINKDOWN; 841 else if (lstate == 3) 842 lstate = QIB_IB_LINKDOWN_DISABLE; 843 else { 844 smp->status |= IB_SMP_INVALID_FIELD; 845 break; 846 } 847 spin_lock_irqsave(&ppd->lflags_lock, flags); 848 ppd->lflags &= ~QIBL_LINKV; 849 spin_unlock_irqrestore(&ppd->lflags_lock, flags); 850 qib_set_linkstate(ppd, lstate); 851 /* 852 * Don't send a reply if the response would be sent 853 * through the disabled port. 854 */ 855 if (lstate == QIB_IB_LINKDOWN_DISABLE && smp->hop_cnt) { 856 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 857 goto done; 858 } 859 qib_wait_linkstate(ppd, QIBL_LINKV, 10); 860 break; 861 case IB_PORT_ARMED: 862 qib_set_linkstate(ppd, QIB_IB_LINKARM); 863 break; 864 case IB_PORT_ACTIVE: 865 qib_set_linkstate(ppd, QIB_IB_LINKACTIVE); 866 break; 867 default: 868 smp->status |= IB_SMP_INVALID_FIELD; 869 } 870 871 if (clientrereg) { 872 event.event = IB_EVENT_CLIENT_REREGISTER; 873 ib_dispatch_event(&event); 874 } 875 876 ret = subn_get_portinfo(smp, ibdev, port); 877 878 /* restore re-reg bit per o14-12.2.1 */ 879 pip->clientrereg_resv_subnetto |= clientrereg; 880 881 goto get_only; 882 883 err: 884 smp->status |= IB_SMP_INVALID_FIELD; 885 get_only: 886 ret = subn_get_portinfo(smp, ibdev, port); 887 done: 888 return ret; 889 } 890 891 /** 892 * rm_pkey - decrecment the reference count for the given PKEY 893 * @dd: the qlogic_ib device 894 * @key: the PKEY index 895 * 896 * Return true if this was the last reference and the hardware table entry 897 * needs to be changed. 898 */ 899 static int rm_pkey(struct qib_pportdata *ppd, u16 key) 900 { 901 int i; 902 int ret; 903 904 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { 905 if (ppd->pkeys[i] != key) 906 continue; 907 if (atomic_dec_and_test(&ppd->pkeyrefs[i])) { 908 ppd->pkeys[i] = 0; 909 ret = 1; 910 goto bail; 911 } 912 break; 913 } 914 915 ret = 0; 916 917 bail: 918 return ret; 919 } 920 921 /** 922 * add_pkey - add the given PKEY to the hardware table 923 * @dd: the qlogic_ib device 924 * @key: the PKEY 925 * 926 * Return an error code if unable to add the entry, zero if no change, 927 * or 1 if the hardware PKEY register needs to be updated. 928 */ 929 static int add_pkey(struct qib_pportdata *ppd, u16 key) 930 { 931 int i; 932 u16 lkey = key & 0x7FFF; 933 int any = 0; 934 int ret; 935 936 if (lkey == 0x7FFF) { 937 ret = 0; 938 goto bail; 939 } 940 941 /* Look for an empty slot or a matching PKEY. */ 942 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { 943 if (!ppd->pkeys[i]) { 944 any++; 945 continue; 946 } 947 /* If it matches exactly, try to increment the ref count */ 948 if (ppd->pkeys[i] == key) { 949 if (atomic_inc_return(&ppd->pkeyrefs[i]) > 1) { 950 ret = 0; 951 goto bail; 952 } 953 /* Lost the race. Look for an empty slot below. */ 954 atomic_dec(&ppd->pkeyrefs[i]); 955 any++; 956 } 957 /* 958 * It makes no sense to have both the limited and unlimited 959 * PKEY set at the same time since the unlimited one will 960 * disable the limited one. 961 */ 962 if ((ppd->pkeys[i] & 0x7FFF) == lkey) { 963 ret = -EEXIST; 964 goto bail; 965 } 966 } 967 if (!any) { 968 ret = -EBUSY; 969 goto bail; 970 } 971 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) { 972 if (!ppd->pkeys[i] && 973 atomic_inc_return(&ppd->pkeyrefs[i]) == 1) { 974 /* for qibstats, etc. */ 975 ppd->pkeys[i] = key; 976 ret = 1; 977 goto bail; 978 } 979 } 980 ret = -EBUSY; 981 982 bail: 983 return ret; 984 } 985 986 /** 987 * set_pkeys - set the PKEY table for ctxt 0 988 * @dd: the qlogic_ib device 989 * @port: the IB port number 990 * @pkeys: the PKEY table 991 */ 992 static int set_pkeys(struct qib_devdata *dd, u8 port, u16 *pkeys) 993 { 994 struct qib_pportdata *ppd; 995 struct qib_ctxtdata *rcd; 996 int i; 997 int changed = 0; 998 999 /* 1000 * IB port one/two always maps to context zero/one, 1001 * always a kernel context, no locking needed 1002 * If we get here with ppd setup, no need to check 1003 * that rcd is valid. 1004 */ 1005 ppd = dd->pport + (port - 1); 1006 rcd = dd->rcd[ppd->hw_pidx]; 1007 1008 for (i = 0; i < ARRAY_SIZE(rcd->pkeys); i++) { 1009 u16 key = pkeys[i]; 1010 u16 okey = rcd->pkeys[i]; 1011 1012 if (key == okey) 1013 continue; 1014 /* 1015 * The value of this PKEY table entry is changing. 1016 * Remove the old entry in the hardware's array of PKEYs. 1017 */ 1018 if (okey & 0x7FFF) 1019 changed |= rm_pkey(ppd, okey); 1020 if (key & 0x7FFF) { 1021 int ret = add_pkey(ppd, key); 1022 1023 if (ret < 0) 1024 key = 0; 1025 else 1026 changed |= ret; 1027 } 1028 rcd->pkeys[i] = key; 1029 } 1030 if (changed) { 1031 struct ib_event event; 1032 1033 (void) dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PKEYS, 0); 1034 1035 event.event = IB_EVENT_PKEY_CHANGE; 1036 event.device = &dd->verbs_dev.rdi.ibdev; 1037 event.element.port_num = port; 1038 ib_dispatch_event(&event); 1039 } 1040 return 0; 1041 } 1042 1043 static int subn_set_pkeytable(struct ib_smp *smp, struct ib_device *ibdev, 1044 u8 port) 1045 { 1046 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); 1047 __be16 *p = (__be16 *) smp->data; 1048 u16 *q = (u16 *) smp->data; 1049 struct qib_devdata *dd = dd_from_ibdev(ibdev); 1050 unsigned i, n = qib_get_npkeys(dd); 1051 1052 for (i = 0; i < n; i++) 1053 q[i] = be16_to_cpu(p[i]); 1054 1055 if (startpx != 0 || set_pkeys(dd, port, q) != 0) 1056 smp->status |= IB_SMP_INVALID_FIELD; 1057 1058 return subn_get_pkeytable(smp, ibdev, port); 1059 } 1060 1061 static int subn_get_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev, 1062 u8 port) 1063 { 1064 struct qib_ibport *ibp = to_iport(ibdev, port); 1065 u8 *p = (u8 *) smp->data; 1066 unsigned i; 1067 1068 memset(smp->data, 0, sizeof(smp->data)); 1069 1070 if (!(ibp->rvp.port_cap_flags & IB_PORT_SL_MAP_SUP)) 1071 smp->status |= IB_SMP_UNSUP_METHOD; 1072 else 1073 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2) 1074 *p++ = (ibp->sl_to_vl[i] << 4) | ibp->sl_to_vl[i + 1]; 1075 1076 return reply(smp); 1077 } 1078 1079 static int subn_set_sl_to_vl(struct ib_smp *smp, struct ib_device *ibdev, 1080 u8 port) 1081 { 1082 struct qib_ibport *ibp = to_iport(ibdev, port); 1083 u8 *p = (u8 *) smp->data; 1084 unsigned i; 1085 1086 if (!(ibp->rvp.port_cap_flags & IB_PORT_SL_MAP_SUP)) { 1087 smp->status |= IB_SMP_UNSUP_METHOD; 1088 return reply(smp); 1089 } 1090 1091 for (i = 0; i < ARRAY_SIZE(ibp->sl_to_vl); i += 2, p++) { 1092 ibp->sl_to_vl[i] = *p >> 4; 1093 ibp->sl_to_vl[i + 1] = *p & 0xF; 1094 } 1095 qib_set_uevent_bits(ppd_from_ibp(to_iport(ibdev, port)), 1096 _QIB_EVENT_SL2VL_CHANGE_BIT); 1097 1098 return subn_get_sl_to_vl(smp, ibdev, port); 1099 } 1100 1101 static int subn_get_vl_arb(struct ib_smp *smp, struct ib_device *ibdev, 1102 u8 port) 1103 { 1104 unsigned which = be32_to_cpu(smp->attr_mod) >> 16; 1105 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port)); 1106 1107 memset(smp->data, 0, sizeof(smp->data)); 1108 1109 if (ppd->vls_supported == IB_VL_VL0) 1110 smp->status |= IB_SMP_UNSUP_METHOD; 1111 else if (which == IB_VLARB_LOWPRI_0_31) 1112 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB, 1113 smp->data); 1114 else if (which == IB_VLARB_HIGHPRI_0_31) 1115 (void) ppd->dd->f_get_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB, 1116 smp->data); 1117 else 1118 smp->status |= IB_SMP_INVALID_FIELD; 1119 1120 return reply(smp); 1121 } 1122 1123 static int subn_set_vl_arb(struct ib_smp *smp, struct ib_device *ibdev, 1124 u8 port) 1125 { 1126 unsigned which = be32_to_cpu(smp->attr_mod) >> 16; 1127 struct qib_pportdata *ppd = ppd_from_ibp(to_iport(ibdev, port)); 1128 1129 if (ppd->vls_supported == IB_VL_VL0) 1130 smp->status |= IB_SMP_UNSUP_METHOD; 1131 else if (which == IB_VLARB_LOWPRI_0_31) 1132 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_LOW_ARB, 1133 smp->data); 1134 else if (which == IB_VLARB_HIGHPRI_0_31) 1135 (void) ppd->dd->f_set_ib_table(ppd, QIB_IB_TBL_VL_HIGH_ARB, 1136 smp->data); 1137 else 1138 smp->status |= IB_SMP_INVALID_FIELD; 1139 1140 return subn_get_vl_arb(smp, ibdev, port); 1141 } 1142 1143 static int subn_trap_repress(struct ib_smp *smp, struct ib_device *ibdev, 1144 u8 port) 1145 { 1146 /* 1147 * For now, we only send the trap once so no need to process this. 1148 * o13-6, o13-7, 1149 * o14-3.a4 The SMA shall not send any message in response to a valid 1150 * SubnTrapRepress() message. 1151 */ 1152 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 1153 } 1154 1155 static int pma_get_classportinfo(struct ib_pma_mad *pmp, 1156 struct ib_device *ibdev) 1157 { 1158 struct ib_class_port_info *p = 1159 (struct ib_class_port_info *)pmp->data; 1160 struct qib_devdata *dd = dd_from_ibdev(ibdev); 1161 1162 memset(pmp->data, 0, sizeof(pmp->data)); 1163 1164 if (pmp->mad_hdr.attr_mod != 0) 1165 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1166 1167 /* Note that AllPortSelect is not valid */ 1168 p->base_version = 1; 1169 p->class_version = 1; 1170 p->capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH; 1171 /* 1172 * Set the most significant bit of CM2 to indicate support for 1173 * congestion statistics 1174 */ 1175 ib_set_cpi_capmask2(p, 1176 dd->psxmitwait_supported << 1177 (31 - IB_CLASS_PORT_INFO_RESP_TIME_FIELD_SIZE)); 1178 /* 1179 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec. 1180 */ 1181 ib_set_cpi_resp_time(p, 18); 1182 1183 return reply((struct ib_smp *) pmp); 1184 } 1185 1186 static int pma_get_portsamplescontrol(struct ib_pma_mad *pmp, 1187 struct ib_device *ibdev, u8 port) 1188 { 1189 struct ib_pma_portsamplescontrol *p = 1190 (struct ib_pma_portsamplescontrol *)pmp->data; 1191 struct qib_ibdev *dev = to_idev(ibdev); 1192 struct qib_devdata *dd = dd_from_dev(dev); 1193 struct qib_ibport *ibp = to_iport(ibdev, port); 1194 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1195 unsigned long flags; 1196 u8 port_select = p->port_select; 1197 1198 memset(pmp->data, 0, sizeof(pmp->data)); 1199 1200 p->port_select = port_select; 1201 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) { 1202 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1203 goto bail; 1204 } 1205 spin_lock_irqsave(&ibp->rvp.lock, flags); 1206 p->tick = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_PMA_TICKS); 1207 p->sample_status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); 1208 p->counter_width = 4; /* 32 bit counters */ 1209 p->counter_mask0_9 = COUNTER_MASK0_9; 1210 p->sample_start = cpu_to_be32(ibp->rvp.pma_sample_start); 1211 p->sample_interval = cpu_to_be32(ibp->rvp.pma_sample_interval); 1212 p->tag = cpu_to_be16(ibp->rvp.pma_tag); 1213 p->counter_select[0] = ibp->rvp.pma_counter_select[0]; 1214 p->counter_select[1] = ibp->rvp.pma_counter_select[1]; 1215 p->counter_select[2] = ibp->rvp.pma_counter_select[2]; 1216 p->counter_select[3] = ibp->rvp.pma_counter_select[3]; 1217 p->counter_select[4] = ibp->rvp.pma_counter_select[4]; 1218 spin_unlock_irqrestore(&ibp->rvp.lock, flags); 1219 1220 bail: 1221 return reply((struct ib_smp *) pmp); 1222 } 1223 1224 static int pma_set_portsamplescontrol(struct ib_pma_mad *pmp, 1225 struct ib_device *ibdev, u8 port) 1226 { 1227 struct ib_pma_portsamplescontrol *p = 1228 (struct ib_pma_portsamplescontrol *)pmp->data; 1229 struct qib_ibdev *dev = to_idev(ibdev); 1230 struct qib_devdata *dd = dd_from_dev(dev); 1231 struct qib_ibport *ibp = to_iport(ibdev, port); 1232 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1233 unsigned long flags; 1234 u8 status, xmit_flags; 1235 int ret; 1236 1237 if (pmp->mad_hdr.attr_mod != 0 || p->port_select != port) { 1238 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1239 ret = reply((struct ib_smp *) pmp); 1240 goto bail; 1241 } 1242 1243 spin_lock_irqsave(&ibp->rvp.lock, flags); 1244 1245 /* Port Sampling code owns the PS* HW counters */ 1246 xmit_flags = ppd->cong_stats.flags; 1247 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_SAMPLE; 1248 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); 1249 if (status == IB_PMA_SAMPLE_STATUS_DONE || 1250 (status == IB_PMA_SAMPLE_STATUS_RUNNING && 1251 xmit_flags == IB_PMA_CONG_HW_CONTROL_TIMER)) { 1252 ibp->rvp.pma_sample_start = be32_to_cpu(p->sample_start); 1253 ibp->rvp.pma_sample_interval = be32_to_cpu(p->sample_interval); 1254 ibp->rvp.pma_tag = be16_to_cpu(p->tag); 1255 ibp->rvp.pma_counter_select[0] = p->counter_select[0]; 1256 ibp->rvp.pma_counter_select[1] = p->counter_select[1]; 1257 ibp->rvp.pma_counter_select[2] = p->counter_select[2]; 1258 ibp->rvp.pma_counter_select[3] = p->counter_select[3]; 1259 ibp->rvp.pma_counter_select[4] = p->counter_select[4]; 1260 dd->f_set_cntr_sample(ppd, ibp->rvp.pma_sample_interval, 1261 ibp->rvp.pma_sample_start); 1262 } 1263 spin_unlock_irqrestore(&ibp->rvp.lock, flags); 1264 1265 ret = pma_get_portsamplescontrol(pmp, ibdev, port); 1266 1267 bail: 1268 return ret; 1269 } 1270 1271 static u64 get_counter(struct qib_ibport *ibp, struct qib_pportdata *ppd, 1272 __be16 sel) 1273 { 1274 u64 ret; 1275 1276 switch (sel) { 1277 case IB_PMA_PORT_XMIT_DATA: 1278 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITDATA); 1279 break; 1280 case IB_PMA_PORT_RCV_DATA: 1281 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVDATA); 1282 break; 1283 case IB_PMA_PORT_XMIT_PKTS: 1284 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITPKTS); 1285 break; 1286 case IB_PMA_PORT_RCV_PKTS: 1287 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSRCVPKTS); 1288 break; 1289 case IB_PMA_PORT_XMIT_WAIT: 1290 ret = ppd->dd->f_portcntr(ppd, QIBPORTCNTR_PSXMITWAIT); 1291 break; 1292 default: 1293 ret = 0; 1294 } 1295 1296 return ret; 1297 } 1298 1299 /* This function assumes that the xmit_wait lock is already held */ 1300 static u64 xmit_wait_get_value_delta(struct qib_pportdata *ppd) 1301 { 1302 u32 delta; 1303 1304 delta = get_counter(&ppd->ibport_data, ppd, 1305 IB_PMA_PORT_XMIT_WAIT); 1306 return ppd->cong_stats.counter + delta; 1307 } 1308 1309 static void cache_hw_sample_counters(struct qib_pportdata *ppd) 1310 { 1311 struct qib_ibport *ibp = &ppd->ibport_data; 1312 1313 ppd->cong_stats.counter_cache.psxmitdata = 1314 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_DATA); 1315 ppd->cong_stats.counter_cache.psrcvdata = 1316 get_counter(ibp, ppd, IB_PMA_PORT_RCV_DATA); 1317 ppd->cong_stats.counter_cache.psxmitpkts = 1318 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_PKTS); 1319 ppd->cong_stats.counter_cache.psrcvpkts = 1320 get_counter(ibp, ppd, IB_PMA_PORT_RCV_PKTS); 1321 ppd->cong_stats.counter_cache.psxmitwait = 1322 get_counter(ibp, ppd, IB_PMA_PORT_XMIT_WAIT); 1323 } 1324 1325 static u64 get_cache_hw_sample_counters(struct qib_pportdata *ppd, 1326 __be16 sel) 1327 { 1328 u64 ret; 1329 1330 switch (sel) { 1331 case IB_PMA_PORT_XMIT_DATA: 1332 ret = ppd->cong_stats.counter_cache.psxmitdata; 1333 break; 1334 case IB_PMA_PORT_RCV_DATA: 1335 ret = ppd->cong_stats.counter_cache.psrcvdata; 1336 break; 1337 case IB_PMA_PORT_XMIT_PKTS: 1338 ret = ppd->cong_stats.counter_cache.psxmitpkts; 1339 break; 1340 case IB_PMA_PORT_RCV_PKTS: 1341 ret = ppd->cong_stats.counter_cache.psrcvpkts; 1342 break; 1343 case IB_PMA_PORT_XMIT_WAIT: 1344 ret = ppd->cong_stats.counter_cache.psxmitwait; 1345 break; 1346 default: 1347 ret = 0; 1348 } 1349 1350 return ret; 1351 } 1352 1353 static int pma_get_portsamplesresult(struct ib_pma_mad *pmp, 1354 struct ib_device *ibdev, u8 port) 1355 { 1356 struct ib_pma_portsamplesresult *p = 1357 (struct ib_pma_portsamplesresult *)pmp->data; 1358 struct qib_ibdev *dev = to_idev(ibdev); 1359 struct qib_devdata *dd = dd_from_dev(dev); 1360 struct qib_ibport *ibp = to_iport(ibdev, port); 1361 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1362 unsigned long flags; 1363 u8 status; 1364 int i; 1365 1366 memset(pmp->data, 0, sizeof(pmp->data)); 1367 spin_lock_irqsave(&ibp->rvp.lock, flags); 1368 p->tag = cpu_to_be16(ibp->rvp.pma_tag); 1369 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER) 1370 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE; 1371 else { 1372 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); 1373 p->sample_status = cpu_to_be16(status); 1374 if (status == IB_PMA_SAMPLE_STATUS_DONE) { 1375 cache_hw_sample_counters(ppd); 1376 ppd->cong_stats.counter = 1377 xmit_wait_get_value_delta(ppd); 1378 dd->f_set_cntr_sample(ppd, 1379 QIB_CONG_TIMER_PSINTERVAL, 0); 1380 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; 1381 } 1382 } 1383 for (i = 0; i < ARRAY_SIZE(ibp->rvp.pma_counter_select); i++) 1384 p->counter[i] = cpu_to_be32( 1385 get_cache_hw_sample_counters( 1386 ppd, ibp->rvp.pma_counter_select[i])); 1387 spin_unlock_irqrestore(&ibp->rvp.lock, flags); 1388 1389 return reply((struct ib_smp *) pmp); 1390 } 1391 1392 static int pma_get_portsamplesresult_ext(struct ib_pma_mad *pmp, 1393 struct ib_device *ibdev, u8 port) 1394 { 1395 struct ib_pma_portsamplesresult_ext *p = 1396 (struct ib_pma_portsamplesresult_ext *)pmp->data; 1397 struct qib_ibdev *dev = to_idev(ibdev); 1398 struct qib_devdata *dd = dd_from_dev(dev); 1399 struct qib_ibport *ibp = to_iport(ibdev, port); 1400 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1401 unsigned long flags; 1402 u8 status; 1403 int i; 1404 1405 /* Port Sampling code owns the PS* HW counters */ 1406 memset(pmp->data, 0, sizeof(pmp->data)); 1407 spin_lock_irqsave(&ibp->rvp.lock, flags); 1408 p->tag = cpu_to_be16(ibp->rvp.pma_tag); 1409 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_TIMER) 1410 p->sample_status = IB_PMA_SAMPLE_STATUS_DONE; 1411 else { 1412 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); 1413 p->sample_status = cpu_to_be16(status); 1414 /* 64 bits */ 1415 p->extended_width = cpu_to_be32(0x80000000); 1416 if (status == IB_PMA_SAMPLE_STATUS_DONE) { 1417 cache_hw_sample_counters(ppd); 1418 ppd->cong_stats.counter = 1419 xmit_wait_get_value_delta(ppd); 1420 dd->f_set_cntr_sample(ppd, 1421 QIB_CONG_TIMER_PSINTERVAL, 0); 1422 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; 1423 } 1424 } 1425 for (i = 0; i < ARRAY_SIZE(ibp->rvp.pma_counter_select); i++) 1426 p->counter[i] = cpu_to_be64( 1427 get_cache_hw_sample_counters( 1428 ppd, ibp->rvp.pma_counter_select[i])); 1429 spin_unlock_irqrestore(&ibp->rvp.lock, flags); 1430 1431 return reply((struct ib_smp *) pmp); 1432 } 1433 1434 static int pma_get_portcounters(struct ib_pma_mad *pmp, 1435 struct ib_device *ibdev, u8 port) 1436 { 1437 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) 1438 pmp->data; 1439 struct qib_ibport *ibp = to_iport(ibdev, port); 1440 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1441 struct qib_verbs_counters cntrs; 1442 u8 port_select = p->port_select; 1443 1444 qib_get_counters(ppd, &cntrs); 1445 1446 /* Adjust counters for any resets done. */ 1447 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter; 1448 cntrs.link_error_recovery_counter -= 1449 ibp->z_link_error_recovery_counter; 1450 cntrs.link_downed_counter -= ibp->z_link_downed_counter; 1451 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors; 1452 cntrs.port_rcv_remphys_errors -= ibp->z_port_rcv_remphys_errors; 1453 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards; 1454 cntrs.port_xmit_data -= ibp->z_port_xmit_data; 1455 cntrs.port_rcv_data -= ibp->z_port_rcv_data; 1456 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets; 1457 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets; 1458 cntrs.local_link_integrity_errors -= 1459 ibp->z_local_link_integrity_errors; 1460 cntrs.excessive_buffer_overrun_errors -= 1461 ibp->z_excessive_buffer_overrun_errors; 1462 cntrs.vl15_dropped -= ibp->z_vl15_dropped; 1463 cntrs.vl15_dropped += ibp->rvp.n_vl15_dropped; 1464 1465 memset(pmp->data, 0, sizeof(pmp->data)); 1466 1467 p->port_select = port_select; 1468 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) 1469 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1470 1471 if (cntrs.symbol_error_counter > 0xFFFFUL) 1472 p->symbol_error_counter = cpu_to_be16(0xFFFF); 1473 else 1474 p->symbol_error_counter = 1475 cpu_to_be16((u16)cntrs.symbol_error_counter); 1476 if (cntrs.link_error_recovery_counter > 0xFFUL) 1477 p->link_error_recovery_counter = 0xFF; 1478 else 1479 p->link_error_recovery_counter = 1480 (u8)cntrs.link_error_recovery_counter; 1481 if (cntrs.link_downed_counter > 0xFFUL) 1482 p->link_downed_counter = 0xFF; 1483 else 1484 p->link_downed_counter = (u8)cntrs.link_downed_counter; 1485 if (cntrs.port_rcv_errors > 0xFFFFUL) 1486 p->port_rcv_errors = cpu_to_be16(0xFFFF); 1487 else 1488 p->port_rcv_errors = 1489 cpu_to_be16((u16) cntrs.port_rcv_errors); 1490 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL) 1491 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF); 1492 else 1493 p->port_rcv_remphys_errors = 1494 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors); 1495 if (cntrs.port_xmit_discards > 0xFFFFUL) 1496 p->port_xmit_discards = cpu_to_be16(0xFFFF); 1497 else 1498 p->port_xmit_discards = 1499 cpu_to_be16((u16)cntrs.port_xmit_discards); 1500 if (cntrs.local_link_integrity_errors > 0xFUL) 1501 cntrs.local_link_integrity_errors = 0xFUL; 1502 if (cntrs.excessive_buffer_overrun_errors > 0xFUL) 1503 cntrs.excessive_buffer_overrun_errors = 0xFUL; 1504 p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) | 1505 cntrs.excessive_buffer_overrun_errors; 1506 if (cntrs.vl15_dropped > 0xFFFFUL) 1507 p->vl15_dropped = cpu_to_be16(0xFFFF); 1508 else 1509 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped); 1510 if (cntrs.port_xmit_data > 0xFFFFFFFFUL) 1511 p->port_xmit_data = cpu_to_be32(0xFFFFFFFF); 1512 else 1513 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data); 1514 if (cntrs.port_rcv_data > 0xFFFFFFFFUL) 1515 p->port_rcv_data = cpu_to_be32(0xFFFFFFFF); 1516 else 1517 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data); 1518 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL) 1519 p->port_xmit_packets = cpu_to_be32(0xFFFFFFFF); 1520 else 1521 p->port_xmit_packets = 1522 cpu_to_be32((u32)cntrs.port_xmit_packets); 1523 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL) 1524 p->port_rcv_packets = cpu_to_be32(0xFFFFFFFF); 1525 else 1526 p->port_rcv_packets = 1527 cpu_to_be32((u32) cntrs.port_rcv_packets); 1528 1529 return reply((struct ib_smp *) pmp); 1530 } 1531 1532 static int pma_get_portcounters_cong(struct ib_pma_mad *pmp, 1533 struct ib_device *ibdev, u8 port) 1534 { 1535 /* Congestion PMA packets start at offset 24 not 64 */ 1536 struct ib_pma_portcounters_cong *p = 1537 (struct ib_pma_portcounters_cong *)pmp->reserved; 1538 struct qib_verbs_counters cntrs; 1539 struct qib_ibport *ibp = to_iport(ibdev, port); 1540 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1541 struct qib_devdata *dd = dd_from_ppd(ppd); 1542 u32 port_select = be32_to_cpu(pmp->mad_hdr.attr_mod) & 0xFF; 1543 u64 xmit_wait_counter; 1544 unsigned long flags; 1545 1546 /* 1547 * This check is performed only in the GET method because the 1548 * SET method ends up calling this anyway. 1549 */ 1550 if (!dd->psxmitwait_supported) 1551 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; 1552 if (port_select != port) 1553 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1554 1555 qib_get_counters(ppd, &cntrs); 1556 spin_lock_irqsave(&ppd->ibport_data.rvp.lock, flags); 1557 xmit_wait_counter = xmit_wait_get_value_delta(ppd); 1558 spin_unlock_irqrestore(&ppd->ibport_data.rvp.lock, flags); 1559 1560 /* Adjust counters for any resets done. */ 1561 cntrs.symbol_error_counter -= ibp->z_symbol_error_counter; 1562 cntrs.link_error_recovery_counter -= 1563 ibp->z_link_error_recovery_counter; 1564 cntrs.link_downed_counter -= ibp->z_link_downed_counter; 1565 cntrs.port_rcv_errors -= ibp->z_port_rcv_errors; 1566 cntrs.port_rcv_remphys_errors -= 1567 ibp->z_port_rcv_remphys_errors; 1568 cntrs.port_xmit_discards -= ibp->z_port_xmit_discards; 1569 cntrs.local_link_integrity_errors -= 1570 ibp->z_local_link_integrity_errors; 1571 cntrs.excessive_buffer_overrun_errors -= 1572 ibp->z_excessive_buffer_overrun_errors; 1573 cntrs.vl15_dropped -= ibp->z_vl15_dropped; 1574 cntrs.vl15_dropped += ibp->rvp.n_vl15_dropped; 1575 cntrs.port_xmit_data -= ibp->z_port_xmit_data; 1576 cntrs.port_rcv_data -= ibp->z_port_rcv_data; 1577 cntrs.port_xmit_packets -= ibp->z_port_xmit_packets; 1578 cntrs.port_rcv_packets -= ibp->z_port_rcv_packets; 1579 1580 memset(pmp->reserved, 0, sizeof(pmp->reserved) + 1581 sizeof(pmp->data)); 1582 1583 /* 1584 * Set top 3 bits to indicate interval in picoseconds in 1585 * remaining bits. 1586 */ 1587 p->port_check_rate = 1588 cpu_to_be16((QIB_XMIT_RATE_PICO << 13) | 1589 (dd->psxmitwait_check_rate & 1590 ~(QIB_XMIT_RATE_PICO << 13))); 1591 p->port_adr_events = cpu_to_be64(0); 1592 p->port_xmit_wait = cpu_to_be64(xmit_wait_counter); 1593 p->port_xmit_data = cpu_to_be64(cntrs.port_xmit_data); 1594 p->port_rcv_data = cpu_to_be64(cntrs.port_rcv_data); 1595 p->port_xmit_packets = 1596 cpu_to_be64(cntrs.port_xmit_packets); 1597 p->port_rcv_packets = 1598 cpu_to_be64(cntrs.port_rcv_packets); 1599 if (cntrs.symbol_error_counter > 0xFFFFUL) 1600 p->symbol_error_counter = cpu_to_be16(0xFFFF); 1601 else 1602 p->symbol_error_counter = 1603 cpu_to_be16( 1604 (u16)cntrs.symbol_error_counter); 1605 if (cntrs.link_error_recovery_counter > 0xFFUL) 1606 p->link_error_recovery_counter = 0xFF; 1607 else 1608 p->link_error_recovery_counter = 1609 (u8)cntrs.link_error_recovery_counter; 1610 if (cntrs.link_downed_counter > 0xFFUL) 1611 p->link_downed_counter = 0xFF; 1612 else 1613 p->link_downed_counter = 1614 (u8)cntrs.link_downed_counter; 1615 if (cntrs.port_rcv_errors > 0xFFFFUL) 1616 p->port_rcv_errors = cpu_to_be16(0xFFFF); 1617 else 1618 p->port_rcv_errors = 1619 cpu_to_be16((u16) cntrs.port_rcv_errors); 1620 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL) 1621 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF); 1622 else 1623 p->port_rcv_remphys_errors = 1624 cpu_to_be16( 1625 (u16)cntrs.port_rcv_remphys_errors); 1626 if (cntrs.port_xmit_discards > 0xFFFFUL) 1627 p->port_xmit_discards = cpu_to_be16(0xFFFF); 1628 else 1629 p->port_xmit_discards = 1630 cpu_to_be16((u16)cntrs.port_xmit_discards); 1631 if (cntrs.local_link_integrity_errors > 0xFUL) 1632 cntrs.local_link_integrity_errors = 0xFUL; 1633 if (cntrs.excessive_buffer_overrun_errors > 0xFUL) 1634 cntrs.excessive_buffer_overrun_errors = 0xFUL; 1635 p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) | 1636 cntrs.excessive_buffer_overrun_errors; 1637 if (cntrs.vl15_dropped > 0xFFFFUL) 1638 p->vl15_dropped = cpu_to_be16(0xFFFF); 1639 else 1640 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped); 1641 1642 return reply((struct ib_smp *)pmp); 1643 } 1644 1645 static void qib_snapshot_pmacounters( 1646 struct qib_ibport *ibp, 1647 struct qib_pma_counters *pmacounters) 1648 { 1649 struct qib_pma_counters *p; 1650 int cpu; 1651 1652 memset(pmacounters, 0, sizeof(*pmacounters)); 1653 for_each_possible_cpu(cpu) { 1654 p = per_cpu_ptr(ibp->pmastats, cpu); 1655 pmacounters->n_unicast_xmit += p->n_unicast_xmit; 1656 pmacounters->n_unicast_rcv += p->n_unicast_rcv; 1657 pmacounters->n_multicast_xmit += p->n_multicast_xmit; 1658 pmacounters->n_multicast_rcv += p->n_multicast_rcv; 1659 } 1660 } 1661 1662 static int pma_get_portcounters_ext(struct ib_pma_mad *pmp, 1663 struct ib_device *ibdev, u8 port) 1664 { 1665 struct ib_pma_portcounters_ext *p = 1666 (struct ib_pma_portcounters_ext *)pmp->data; 1667 struct qib_ibport *ibp = to_iport(ibdev, port); 1668 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1669 u64 swords, rwords, spkts, rpkts, xwait; 1670 struct qib_pma_counters pma; 1671 u8 port_select = p->port_select; 1672 1673 memset(pmp->data, 0, sizeof(pmp->data)); 1674 1675 p->port_select = port_select; 1676 if (pmp->mad_hdr.attr_mod != 0 || port_select != port) { 1677 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1678 goto bail; 1679 } 1680 1681 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait); 1682 1683 /* Adjust counters for any resets done. */ 1684 swords -= ibp->z_port_xmit_data; 1685 rwords -= ibp->z_port_rcv_data; 1686 spkts -= ibp->z_port_xmit_packets; 1687 rpkts -= ibp->z_port_rcv_packets; 1688 1689 p->port_xmit_data = cpu_to_be64(swords); 1690 p->port_rcv_data = cpu_to_be64(rwords); 1691 p->port_xmit_packets = cpu_to_be64(spkts); 1692 p->port_rcv_packets = cpu_to_be64(rpkts); 1693 1694 qib_snapshot_pmacounters(ibp, &pma); 1695 1696 p->port_unicast_xmit_packets = cpu_to_be64(pma.n_unicast_xmit 1697 - ibp->z_unicast_xmit); 1698 p->port_unicast_rcv_packets = cpu_to_be64(pma.n_unicast_rcv 1699 - ibp->z_unicast_rcv); 1700 p->port_multicast_xmit_packets = cpu_to_be64(pma.n_multicast_xmit 1701 - ibp->z_multicast_xmit); 1702 p->port_multicast_rcv_packets = cpu_to_be64(pma.n_multicast_rcv 1703 - ibp->z_multicast_rcv); 1704 1705 bail: 1706 return reply((struct ib_smp *) pmp); 1707 } 1708 1709 static int pma_set_portcounters(struct ib_pma_mad *pmp, 1710 struct ib_device *ibdev, u8 port) 1711 { 1712 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) 1713 pmp->data; 1714 struct qib_ibport *ibp = to_iport(ibdev, port); 1715 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1716 struct qib_verbs_counters cntrs; 1717 1718 /* 1719 * Since the HW doesn't support clearing counters, we save the 1720 * current count and subtract it from future responses. 1721 */ 1722 qib_get_counters(ppd, &cntrs); 1723 1724 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR) 1725 ibp->z_symbol_error_counter = cntrs.symbol_error_counter; 1726 1727 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY) 1728 ibp->z_link_error_recovery_counter = 1729 cntrs.link_error_recovery_counter; 1730 1731 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED) 1732 ibp->z_link_downed_counter = cntrs.link_downed_counter; 1733 1734 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS) 1735 ibp->z_port_rcv_errors = cntrs.port_rcv_errors; 1736 1737 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS) 1738 ibp->z_port_rcv_remphys_errors = 1739 cntrs.port_rcv_remphys_errors; 1740 1741 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS) 1742 ibp->z_port_xmit_discards = cntrs.port_xmit_discards; 1743 1744 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS) 1745 ibp->z_local_link_integrity_errors = 1746 cntrs.local_link_integrity_errors; 1747 1748 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS) 1749 ibp->z_excessive_buffer_overrun_errors = 1750 cntrs.excessive_buffer_overrun_errors; 1751 1752 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) { 1753 ibp->rvp.n_vl15_dropped = 0; 1754 ibp->z_vl15_dropped = cntrs.vl15_dropped; 1755 } 1756 1757 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA) 1758 ibp->z_port_xmit_data = cntrs.port_xmit_data; 1759 1760 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA) 1761 ibp->z_port_rcv_data = cntrs.port_rcv_data; 1762 1763 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS) 1764 ibp->z_port_xmit_packets = cntrs.port_xmit_packets; 1765 1766 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS) 1767 ibp->z_port_rcv_packets = cntrs.port_rcv_packets; 1768 1769 return pma_get_portcounters(pmp, ibdev, port); 1770 } 1771 1772 static int pma_set_portcounters_cong(struct ib_pma_mad *pmp, 1773 struct ib_device *ibdev, u8 port) 1774 { 1775 struct qib_ibport *ibp = to_iport(ibdev, port); 1776 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1777 struct qib_devdata *dd = dd_from_ppd(ppd); 1778 struct qib_verbs_counters cntrs; 1779 u32 counter_select = (be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24) & 0xFF; 1780 int ret = 0; 1781 unsigned long flags; 1782 1783 qib_get_counters(ppd, &cntrs); 1784 /* Get counter values before we save them */ 1785 ret = pma_get_portcounters_cong(pmp, ibdev, port); 1786 1787 if (counter_select & IB_PMA_SEL_CONG_XMIT) { 1788 spin_lock_irqsave(&ppd->ibport_data.rvp.lock, flags); 1789 ppd->cong_stats.counter = 0; 1790 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 1791 0x0); 1792 spin_unlock_irqrestore(&ppd->ibport_data.rvp.lock, flags); 1793 } 1794 if (counter_select & IB_PMA_SEL_CONG_PORT_DATA) { 1795 ibp->z_port_xmit_data = cntrs.port_xmit_data; 1796 ibp->z_port_rcv_data = cntrs.port_rcv_data; 1797 ibp->z_port_xmit_packets = cntrs.port_xmit_packets; 1798 ibp->z_port_rcv_packets = cntrs.port_rcv_packets; 1799 } 1800 if (counter_select & IB_PMA_SEL_CONG_ALL) { 1801 ibp->z_symbol_error_counter = 1802 cntrs.symbol_error_counter; 1803 ibp->z_link_error_recovery_counter = 1804 cntrs.link_error_recovery_counter; 1805 ibp->z_link_downed_counter = 1806 cntrs.link_downed_counter; 1807 ibp->z_port_rcv_errors = cntrs.port_rcv_errors; 1808 ibp->z_port_rcv_remphys_errors = 1809 cntrs.port_rcv_remphys_errors; 1810 ibp->z_port_xmit_discards = 1811 cntrs.port_xmit_discards; 1812 ibp->z_local_link_integrity_errors = 1813 cntrs.local_link_integrity_errors; 1814 ibp->z_excessive_buffer_overrun_errors = 1815 cntrs.excessive_buffer_overrun_errors; 1816 ibp->rvp.n_vl15_dropped = 0; 1817 ibp->z_vl15_dropped = cntrs.vl15_dropped; 1818 } 1819 1820 return ret; 1821 } 1822 1823 static int pma_set_portcounters_ext(struct ib_pma_mad *pmp, 1824 struct ib_device *ibdev, u8 port) 1825 { 1826 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) 1827 pmp->data; 1828 struct qib_ibport *ibp = to_iport(ibdev, port); 1829 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1830 u64 swords, rwords, spkts, rpkts, xwait; 1831 struct qib_pma_counters pma; 1832 1833 qib_snapshot_counters(ppd, &swords, &rwords, &spkts, &rpkts, &xwait); 1834 1835 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA) 1836 ibp->z_port_xmit_data = swords; 1837 1838 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA) 1839 ibp->z_port_rcv_data = rwords; 1840 1841 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS) 1842 ibp->z_port_xmit_packets = spkts; 1843 1844 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS) 1845 ibp->z_port_rcv_packets = rpkts; 1846 1847 qib_snapshot_pmacounters(ibp, &pma); 1848 1849 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS) 1850 ibp->z_unicast_xmit = pma.n_unicast_xmit; 1851 1852 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS) 1853 ibp->z_unicast_rcv = pma.n_unicast_rcv; 1854 1855 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS) 1856 ibp->z_multicast_xmit = pma.n_multicast_xmit; 1857 1858 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS) 1859 ibp->z_multicast_rcv = pma.n_multicast_rcv; 1860 1861 return pma_get_portcounters_ext(pmp, ibdev, port); 1862 } 1863 1864 static int process_subn(struct ib_device *ibdev, int mad_flags, 1865 u8 port, const struct ib_mad *in_mad, 1866 struct ib_mad *out_mad) 1867 { 1868 struct ib_smp *smp = (struct ib_smp *)out_mad; 1869 struct qib_ibport *ibp = to_iport(ibdev, port); 1870 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 1871 int ret; 1872 1873 *out_mad = *in_mad; 1874 if (smp->class_version != 1) { 1875 smp->status |= IB_SMP_UNSUP_VERSION; 1876 ret = reply(smp); 1877 goto bail; 1878 } 1879 1880 ret = check_mkey(ibp, smp, mad_flags); 1881 if (ret) { 1882 u32 port_num = be32_to_cpu(smp->attr_mod); 1883 1884 /* 1885 * If this is a get/set portinfo, we already check the 1886 * M_Key if the MAD is for another port and the M_Key 1887 * is OK on the receiving port. This check is needed 1888 * to increment the error counters when the M_Key 1889 * fails to match on *both* ports. 1890 */ 1891 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO && 1892 (smp->method == IB_MGMT_METHOD_GET || 1893 smp->method == IB_MGMT_METHOD_SET) && 1894 port_num && port_num <= ibdev->phys_port_cnt && 1895 port != port_num) 1896 (void) check_mkey(to_iport(ibdev, port_num), smp, 0); 1897 ret = IB_MAD_RESULT_FAILURE; 1898 goto bail; 1899 } 1900 1901 switch (smp->method) { 1902 case IB_MGMT_METHOD_GET: 1903 switch (smp->attr_id) { 1904 case IB_SMP_ATTR_NODE_DESC: 1905 ret = subn_get_nodedescription(smp, ibdev); 1906 goto bail; 1907 case IB_SMP_ATTR_NODE_INFO: 1908 ret = subn_get_nodeinfo(smp, ibdev, port); 1909 goto bail; 1910 case IB_SMP_ATTR_GUID_INFO: 1911 ret = subn_get_guidinfo(smp, ibdev, port); 1912 goto bail; 1913 case IB_SMP_ATTR_PORT_INFO: 1914 ret = subn_get_portinfo(smp, ibdev, port); 1915 goto bail; 1916 case IB_SMP_ATTR_PKEY_TABLE: 1917 ret = subn_get_pkeytable(smp, ibdev, port); 1918 goto bail; 1919 case IB_SMP_ATTR_SL_TO_VL_TABLE: 1920 ret = subn_get_sl_to_vl(smp, ibdev, port); 1921 goto bail; 1922 case IB_SMP_ATTR_VL_ARB_TABLE: 1923 ret = subn_get_vl_arb(smp, ibdev, port); 1924 goto bail; 1925 case IB_SMP_ATTR_SM_INFO: 1926 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED) { 1927 ret = IB_MAD_RESULT_SUCCESS | 1928 IB_MAD_RESULT_CONSUMED; 1929 goto bail; 1930 } 1931 if (ibp->rvp.port_cap_flags & IB_PORT_SM) { 1932 ret = IB_MAD_RESULT_SUCCESS; 1933 goto bail; 1934 } 1935 /* FALLTHROUGH */ 1936 default: 1937 smp->status |= IB_SMP_UNSUP_METH_ATTR; 1938 ret = reply(smp); 1939 goto bail; 1940 } 1941 1942 case IB_MGMT_METHOD_SET: 1943 switch (smp->attr_id) { 1944 case IB_SMP_ATTR_GUID_INFO: 1945 ret = subn_set_guidinfo(smp, ibdev, port); 1946 goto bail; 1947 case IB_SMP_ATTR_PORT_INFO: 1948 ret = subn_set_portinfo(smp, ibdev, port); 1949 goto bail; 1950 case IB_SMP_ATTR_PKEY_TABLE: 1951 ret = subn_set_pkeytable(smp, ibdev, port); 1952 goto bail; 1953 case IB_SMP_ATTR_SL_TO_VL_TABLE: 1954 ret = subn_set_sl_to_vl(smp, ibdev, port); 1955 goto bail; 1956 case IB_SMP_ATTR_VL_ARB_TABLE: 1957 ret = subn_set_vl_arb(smp, ibdev, port); 1958 goto bail; 1959 case IB_SMP_ATTR_SM_INFO: 1960 if (ibp->rvp.port_cap_flags & IB_PORT_SM_DISABLED) { 1961 ret = IB_MAD_RESULT_SUCCESS | 1962 IB_MAD_RESULT_CONSUMED; 1963 goto bail; 1964 } 1965 if (ibp->rvp.port_cap_flags & IB_PORT_SM) { 1966 ret = IB_MAD_RESULT_SUCCESS; 1967 goto bail; 1968 } 1969 /* FALLTHROUGH */ 1970 default: 1971 smp->status |= IB_SMP_UNSUP_METH_ATTR; 1972 ret = reply(smp); 1973 goto bail; 1974 } 1975 1976 case IB_MGMT_METHOD_TRAP_REPRESS: 1977 if (smp->attr_id == IB_SMP_ATTR_NOTICE) 1978 ret = subn_trap_repress(smp, ibdev, port); 1979 else { 1980 smp->status |= IB_SMP_UNSUP_METH_ATTR; 1981 ret = reply(smp); 1982 } 1983 goto bail; 1984 1985 case IB_MGMT_METHOD_TRAP: 1986 case IB_MGMT_METHOD_REPORT: 1987 case IB_MGMT_METHOD_REPORT_RESP: 1988 case IB_MGMT_METHOD_GET_RESP: 1989 /* 1990 * The ib_mad module will call us to process responses 1991 * before checking for other consumers. 1992 * Just tell the caller to process it normally. 1993 */ 1994 ret = IB_MAD_RESULT_SUCCESS; 1995 goto bail; 1996 1997 case IB_MGMT_METHOD_SEND: 1998 if (ib_get_smp_direction(smp) && 1999 smp->attr_id == QIB_VENDOR_IPG) { 2000 ppd->dd->f_set_ib_cfg(ppd, QIB_IB_CFG_PORT, 2001 smp->data[0]); 2002 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 2003 } else 2004 ret = IB_MAD_RESULT_SUCCESS; 2005 goto bail; 2006 2007 default: 2008 smp->status |= IB_SMP_UNSUP_METHOD; 2009 ret = reply(smp); 2010 } 2011 2012 bail: 2013 return ret; 2014 } 2015 2016 static int process_perf(struct ib_device *ibdev, u8 port, 2017 const struct ib_mad *in_mad, 2018 struct ib_mad *out_mad) 2019 { 2020 struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad; 2021 int ret; 2022 2023 *out_mad = *in_mad; 2024 if (pmp->mad_hdr.class_version != 1) { 2025 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION; 2026 ret = reply((struct ib_smp *) pmp); 2027 goto bail; 2028 } 2029 2030 switch (pmp->mad_hdr.method) { 2031 case IB_MGMT_METHOD_GET: 2032 switch (pmp->mad_hdr.attr_id) { 2033 case IB_PMA_CLASS_PORT_INFO: 2034 ret = pma_get_classportinfo(pmp, ibdev); 2035 goto bail; 2036 case IB_PMA_PORT_SAMPLES_CONTROL: 2037 ret = pma_get_portsamplescontrol(pmp, ibdev, port); 2038 goto bail; 2039 case IB_PMA_PORT_SAMPLES_RESULT: 2040 ret = pma_get_portsamplesresult(pmp, ibdev, port); 2041 goto bail; 2042 case IB_PMA_PORT_SAMPLES_RESULT_EXT: 2043 ret = pma_get_portsamplesresult_ext(pmp, ibdev, port); 2044 goto bail; 2045 case IB_PMA_PORT_COUNTERS: 2046 ret = pma_get_portcounters(pmp, ibdev, port); 2047 goto bail; 2048 case IB_PMA_PORT_COUNTERS_EXT: 2049 ret = pma_get_portcounters_ext(pmp, ibdev, port); 2050 goto bail; 2051 case IB_PMA_PORT_COUNTERS_CONG: 2052 ret = pma_get_portcounters_cong(pmp, ibdev, port); 2053 goto bail; 2054 default: 2055 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; 2056 ret = reply((struct ib_smp *) pmp); 2057 goto bail; 2058 } 2059 2060 case IB_MGMT_METHOD_SET: 2061 switch (pmp->mad_hdr.attr_id) { 2062 case IB_PMA_PORT_SAMPLES_CONTROL: 2063 ret = pma_set_portsamplescontrol(pmp, ibdev, port); 2064 goto bail; 2065 case IB_PMA_PORT_COUNTERS: 2066 ret = pma_set_portcounters(pmp, ibdev, port); 2067 goto bail; 2068 case IB_PMA_PORT_COUNTERS_EXT: 2069 ret = pma_set_portcounters_ext(pmp, ibdev, port); 2070 goto bail; 2071 case IB_PMA_PORT_COUNTERS_CONG: 2072 ret = pma_set_portcounters_cong(pmp, ibdev, port); 2073 goto bail; 2074 default: 2075 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; 2076 ret = reply((struct ib_smp *) pmp); 2077 goto bail; 2078 } 2079 2080 case IB_MGMT_METHOD_TRAP: 2081 case IB_MGMT_METHOD_GET_RESP: 2082 /* 2083 * The ib_mad module will call us to process responses 2084 * before checking for other consumers. 2085 * Just tell the caller to process it normally. 2086 */ 2087 ret = IB_MAD_RESULT_SUCCESS; 2088 goto bail; 2089 2090 default: 2091 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD; 2092 ret = reply((struct ib_smp *) pmp); 2093 } 2094 2095 bail: 2096 return ret; 2097 } 2098 2099 static int cc_get_classportinfo(struct ib_cc_mad *ccp, 2100 struct ib_device *ibdev) 2101 { 2102 struct ib_cc_classportinfo_attr *p = 2103 (struct ib_cc_classportinfo_attr *)ccp->mgmt_data; 2104 2105 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data)); 2106 2107 p->base_version = 1; 2108 p->class_version = 1; 2109 p->cap_mask = 0; 2110 2111 /* 2112 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 sec. 2113 */ 2114 p->resp_time_value = 18; 2115 2116 return reply((struct ib_smp *) ccp); 2117 } 2118 2119 static int cc_get_congestion_info(struct ib_cc_mad *ccp, 2120 struct ib_device *ibdev, u8 port) 2121 { 2122 struct ib_cc_info_attr *p = 2123 (struct ib_cc_info_attr *)ccp->mgmt_data; 2124 struct qib_ibport *ibp = to_iport(ibdev, port); 2125 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2126 2127 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data)); 2128 2129 p->congestion_info = 0; 2130 p->control_table_cap = ppd->cc_max_table_entries; 2131 2132 return reply((struct ib_smp *) ccp); 2133 } 2134 2135 static int cc_get_congestion_setting(struct ib_cc_mad *ccp, 2136 struct ib_device *ibdev, u8 port) 2137 { 2138 int i; 2139 struct ib_cc_congestion_setting_attr *p = 2140 (struct ib_cc_congestion_setting_attr *)ccp->mgmt_data; 2141 struct qib_ibport *ibp = to_iport(ibdev, port); 2142 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2143 struct ib_cc_congestion_entry_shadow *entries; 2144 2145 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data)); 2146 2147 spin_lock(&ppd->cc_shadow_lock); 2148 2149 entries = ppd->congestion_entries_shadow->entries; 2150 p->port_control = cpu_to_be16( 2151 ppd->congestion_entries_shadow->port_control); 2152 p->control_map = cpu_to_be16( 2153 ppd->congestion_entries_shadow->control_map); 2154 for (i = 0; i < IB_CC_CCS_ENTRIES; i++) { 2155 p->entries[i].ccti_increase = entries[i].ccti_increase; 2156 p->entries[i].ccti_timer = cpu_to_be16(entries[i].ccti_timer); 2157 p->entries[i].trigger_threshold = entries[i].trigger_threshold; 2158 p->entries[i].ccti_min = entries[i].ccti_min; 2159 } 2160 2161 spin_unlock(&ppd->cc_shadow_lock); 2162 2163 return reply((struct ib_smp *) ccp); 2164 } 2165 2166 static int cc_get_congestion_control_table(struct ib_cc_mad *ccp, 2167 struct ib_device *ibdev, u8 port) 2168 { 2169 struct ib_cc_table_attr *p = 2170 (struct ib_cc_table_attr *)ccp->mgmt_data; 2171 struct qib_ibport *ibp = to_iport(ibdev, port); 2172 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2173 u32 cct_block_index = be32_to_cpu(ccp->attr_mod); 2174 u32 max_cct_block; 2175 u32 cct_entry; 2176 struct ib_cc_table_entry_shadow *entries; 2177 int i; 2178 2179 /* Is the table index more than what is supported? */ 2180 if (cct_block_index > IB_CC_TABLE_CAP_DEFAULT - 1) 2181 goto bail; 2182 2183 memset(ccp->mgmt_data, 0, sizeof(ccp->mgmt_data)); 2184 2185 spin_lock(&ppd->cc_shadow_lock); 2186 2187 max_cct_block = 2188 (ppd->ccti_entries_shadow->ccti_last_entry + 1)/IB_CCT_ENTRIES; 2189 max_cct_block = max_cct_block ? max_cct_block - 1 : 0; 2190 2191 if (cct_block_index > max_cct_block) { 2192 spin_unlock(&ppd->cc_shadow_lock); 2193 goto bail; 2194 } 2195 2196 ccp->attr_mod = cpu_to_be32(cct_block_index); 2197 2198 cct_entry = IB_CCT_ENTRIES * (cct_block_index + 1); 2199 2200 cct_entry--; 2201 2202 p->ccti_limit = cpu_to_be16(cct_entry); 2203 2204 entries = &ppd->ccti_entries_shadow-> 2205 entries[IB_CCT_ENTRIES * cct_block_index]; 2206 cct_entry %= IB_CCT_ENTRIES; 2207 2208 for (i = 0; i <= cct_entry; i++) 2209 p->ccti_entries[i].entry = cpu_to_be16(entries[i].entry); 2210 2211 spin_unlock(&ppd->cc_shadow_lock); 2212 2213 return reply((struct ib_smp *) ccp); 2214 2215 bail: 2216 return reply_failure((struct ib_smp *) ccp); 2217 } 2218 2219 static int cc_set_congestion_setting(struct ib_cc_mad *ccp, 2220 struct ib_device *ibdev, u8 port) 2221 { 2222 struct ib_cc_congestion_setting_attr *p = 2223 (struct ib_cc_congestion_setting_attr *)ccp->mgmt_data; 2224 struct qib_ibport *ibp = to_iport(ibdev, port); 2225 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2226 int i; 2227 2228 ppd->cc_sl_control_map = be16_to_cpu(p->control_map); 2229 2230 for (i = 0; i < IB_CC_CCS_ENTRIES; i++) { 2231 ppd->congestion_entries[i].ccti_increase = 2232 p->entries[i].ccti_increase; 2233 2234 ppd->congestion_entries[i].ccti_timer = 2235 be16_to_cpu(p->entries[i].ccti_timer); 2236 2237 ppd->congestion_entries[i].trigger_threshold = 2238 p->entries[i].trigger_threshold; 2239 2240 ppd->congestion_entries[i].ccti_min = 2241 p->entries[i].ccti_min; 2242 } 2243 2244 return reply((struct ib_smp *) ccp); 2245 } 2246 2247 static int cc_set_congestion_control_table(struct ib_cc_mad *ccp, 2248 struct ib_device *ibdev, u8 port) 2249 { 2250 struct ib_cc_table_attr *p = 2251 (struct ib_cc_table_attr *)ccp->mgmt_data; 2252 struct qib_ibport *ibp = to_iport(ibdev, port); 2253 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2254 u32 cct_block_index = be32_to_cpu(ccp->attr_mod); 2255 u32 cct_entry; 2256 struct ib_cc_table_entry_shadow *entries; 2257 int i; 2258 2259 /* Is the table index more than what is supported? */ 2260 if (cct_block_index > IB_CC_TABLE_CAP_DEFAULT - 1) 2261 goto bail; 2262 2263 /* If this packet is the first in the sequence then 2264 * zero the total table entry count. 2265 */ 2266 if (be16_to_cpu(p->ccti_limit) < IB_CCT_ENTRIES) 2267 ppd->total_cct_entry = 0; 2268 2269 cct_entry = (be16_to_cpu(p->ccti_limit))%IB_CCT_ENTRIES; 2270 2271 /* ccti_limit is 0 to 63 */ 2272 ppd->total_cct_entry += (cct_entry + 1); 2273 2274 if (ppd->total_cct_entry > ppd->cc_supported_table_entries) 2275 goto bail; 2276 2277 ppd->ccti_limit = be16_to_cpu(p->ccti_limit); 2278 2279 entries = ppd->ccti_entries + (IB_CCT_ENTRIES * cct_block_index); 2280 2281 for (i = 0; i <= cct_entry; i++) 2282 entries[i].entry = be16_to_cpu(p->ccti_entries[i].entry); 2283 2284 spin_lock(&ppd->cc_shadow_lock); 2285 2286 ppd->ccti_entries_shadow->ccti_last_entry = ppd->total_cct_entry - 1; 2287 memcpy(ppd->ccti_entries_shadow->entries, ppd->ccti_entries, 2288 (ppd->total_cct_entry * sizeof(struct ib_cc_table_entry))); 2289 2290 ppd->congestion_entries_shadow->port_control = IB_CC_CCS_PC_SL_BASED; 2291 ppd->congestion_entries_shadow->control_map = ppd->cc_sl_control_map; 2292 memcpy(ppd->congestion_entries_shadow->entries, ppd->congestion_entries, 2293 IB_CC_CCS_ENTRIES * sizeof(struct ib_cc_congestion_entry)); 2294 2295 spin_unlock(&ppd->cc_shadow_lock); 2296 2297 return reply((struct ib_smp *) ccp); 2298 2299 bail: 2300 return reply_failure((struct ib_smp *) ccp); 2301 } 2302 2303 static int check_cc_key(struct qib_ibport *ibp, 2304 struct ib_cc_mad *ccp, int mad_flags) 2305 { 2306 return 0; 2307 } 2308 2309 static int process_cc(struct ib_device *ibdev, int mad_flags, 2310 u8 port, const struct ib_mad *in_mad, 2311 struct ib_mad *out_mad) 2312 { 2313 struct ib_cc_mad *ccp = (struct ib_cc_mad *)out_mad; 2314 struct qib_ibport *ibp = to_iport(ibdev, port); 2315 int ret; 2316 2317 *out_mad = *in_mad; 2318 2319 if (ccp->class_version != 2) { 2320 ccp->status |= IB_SMP_UNSUP_VERSION; 2321 ret = reply((struct ib_smp *)ccp); 2322 goto bail; 2323 } 2324 2325 ret = check_cc_key(ibp, ccp, mad_flags); 2326 if (ret) 2327 goto bail; 2328 2329 switch (ccp->method) { 2330 case IB_MGMT_METHOD_GET: 2331 switch (ccp->attr_id) { 2332 case IB_CC_ATTR_CLASSPORTINFO: 2333 ret = cc_get_classportinfo(ccp, ibdev); 2334 goto bail; 2335 2336 case IB_CC_ATTR_CONGESTION_INFO: 2337 ret = cc_get_congestion_info(ccp, ibdev, port); 2338 goto bail; 2339 2340 case IB_CC_ATTR_CA_CONGESTION_SETTING: 2341 ret = cc_get_congestion_setting(ccp, ibdev, port); 2342 goto bail; 2343 2344 case IB_CC_ATTR_CONGESTION_CONTROL_TABLE: 2345 ret = cc_get_congestion_control_table(ccp, ibdev, port); 2346 goto bail; 2347 2348 /* FALLTHROUGH */ 2349 default: 2350 ccp->status |= IB_SMP_UNSUP_METH_ATTR; 2351 ret = reply((struct ib_smp *) ccp); 2352 goto bail; 2353 } 2354 2355 case IB_MGMT_METHOD_SET: 2356 switch (ccp->attr_id) { 2357 case IB_CC_ATTR_CA_CONGESTION_SETTING: 2358 ret = cc_set_congestion_setting(ccp, ibdev, port); 2359 goto bail; 2360 2361 case IB_CC_ATTR_CONGESTION_CONTROL_TABLE: 2362 ret = cc_set_congestion_control_table(ccp, ibdev, port); 2363 goto bail; 2364 2365 /* FALLTHROUGH */ 2366 default: 2367 ccp->status |= IB_SMP_UNSUP_METH_ATTR; 2368 ret = reply((struct ib_smp *) ccp); 2369 goto bail; 2370 } 2371 2372 case IB_MGMT_METHOD_GET_RESP: 2373 /* 2374 * The ib_mad module will call us to process responses 2375 * before checking for other consumers. 2376 * Just tell the caller to process it normally. 2377 */ 2378 ret = IB_MAD_RESULT_SUCCESS; 2379 goto bail; 2380 2381 case IB_MGMT_METHOD_TRAP: 2382 default: 2383 ccp->status |= IB_SMP_UNSUP_METHOD; 2384 ret = reply((struct ib_smp *) ccp); 2385 } 2386 2387 bail: 2388 return ret; 2389 } 2390 2391 /** 2392 * qib_process_mad - process an incoming MAD packet 2393 * @ibdev: the infiniband device this packet came in on 2394 * @mad_flags: MAD flags 2395 * @port: the port number this packet came in on 2396 * @in_wc: the work completion entry for this packet 2397 * @in_grh: the global route header for this packet 2398 * @in_mad: the incoming MAD 2399 * @out_mad: any outgoing MAD reply 2400 * 2401 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not 2402 * interested in processing. 2403 * 2404 * Note that the verbs framework has already done the MAD sanity checks, 2405 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE 2406 * MADs. 2407 * 2408 * This is called by the ib_mad module. 2409 */ 2410 int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port, 2411 const struct ib_wc *in_wc, const struct ib_grh *in_grh, 2412 const struct ib_mad_hdr *in, size_t in_mad_size, 2413 struct ib_mad_hdr *out, size_t *out_mad_size, 2414 u16 *out_mad_pkey_index) 2415 { 2416 int ret; 2417 struct qib_ibport *ibp = to_iport(ibdev, port); 2418 struct qib_pportdata *ppd = ppd_from_ibp(ibp); 2419 const struct ib_mad *in_mad = (const struct ib_mad *)in; 2420 struct ib_mad *out_mad = (struct ib_mad *)out; 2421 2422 if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) || 2423 *out_mad_size != sizeof(*out_mad))) 2424 return IB_MAD_RESULT_FAILURE; 2425 2426 switch (in_mad->mad_hdr.mgmt_class) { 2427 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: 2428 case IB_MGMT_CLASS_SUBN_LID_ROUTED: 2429 ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad); 2430 goto bail; 2431 2432 case IB_MGMT_CLASS_PERF_MGMT: 2433 ret = process_perf(ibdev, port, in_mad, out_mad); 2434 goto bail; 2435 2436 case IB_MGMT_CLASS_CONG_MGMT: 2437 if (!ppd->congestion_entries_shadow || 2438 !qib_cc_table_size) { 2439 ret = IB_MAD_RESULT_SUCCESS; 2440 goto bail; 2441 } 2442 ret = process_cc(ibdev, mad_flags, port, in_mad, out_mad); 2443 goto bail; 2444 2445 default: 2446 ret = IB_MAD_RESULT_SUCCESS; 2447 } 2448 2449 bail: 2450 return ret; 2451 } 2452 2453 static void xmit_wait_timer_func(unsigned long opaque) 2454 { 2455 struct qib_pportdata *ppd = (struct qib_pportdata *)opaque; 2456 struct qib_devdata *dd = dd_from_ppd(ppd); 2457 unsigned long flags; 2458 u8 status; 2459 2460 spin_lock_irqsave(&ppd->ibport_data.rvp.lock, flags); 2461 if (ppd->cong_stats.flags == IB_PMA_CONG_HW_CONTROL_SAMPLE) { 2462 status = dd->f_portcntr(ppd, QIBPORTCNTR_PSSTAT); 2463 if (status == IB_PMA_SAMPLE_STATUS_DONE) { 2464 /* save counter cache */ 2465 cache_hw_sample_counters(ppd); 2466 ppd->cong_stats.flags = IB_PMA_CONG_HW_CONTROL_TIMER; 2467 } else 2468 goto done; 2469 } 2470 ppd->cong_stats.counter = xmit_wait_get_value_delta(ppd); 2471 dd->f_set_cntr_sample(ppd, QIB_CONG_TIMER_PSINTERVAL, 0x0); 2472 done: 2473 spin_unlock_irqrestore(&ppd->ibport_data.rvp.lock, flags); 2474 mod_timer(&ppd->cong_stats.timer, jiffies + HZ); 2475 } 2476 2477 void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx) 2478 { 2479 struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi); 2480 struct qib_devdata *dd = container_of(ibdev, 2481 struct qib_devdata, verbs_dev); 2482 2483 /* Initialize xmit_wait structure */ 2484 dd->pport[port_idx].cong_stats.counter = 0; 2485 init_timer(&dd->pport[port_idx].cong_stats.timer); 2486 dd->pport[port_idx].cong_stats.timer.function = xmit_wait_timer_func; 2487 dd->pport[port_idx].cong_stats.timer.data = 2488 (unsigned long)(&dd->pport[port_idx]); 2489 dd->pport[port_idx].cong_stats.timer.expires = 0; 2490 add_timer(&dd->pport[port_idx].cong_stats.timer); 2491 } 2492 2493 void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx) 2494 { 2495 struct qib_ibdev *ibdev = container_of(rdi, struct qib_ibdev, rdi); 2496 struct qib_devdata *dd = container_of(ibdev, 2497 struct qib_devdata, verbs_dev); 2498 2499 if (dd->pport[port_idx].cong_stats.timer.data) 2500 del_timer_sync(&dd->pport[port_idx].cong_stats.timer); 2501 2502 if (dd->pport[port_idx].ibport_data.smi_ah) 2503 ib_destroy_ah(&dd->pport[port_idx].ibport_data.smi_ah->ibah); 2504 } 2505