1/* 2 * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. 3 * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34#include <rdma/ib_smi.h> 35#include <rdma/ib_pma.h> 36 37#include "ipath_kernel.h" 38#include "ipath_verbs.h" 39#include "ipath_common.h" 40 41#define IB_SMP_UNSUP_VERSION cpu_to_be16(0x0004) 42#define IB_SMP_UNSUP_METHOD cpu_to_be16(0x0008) 43#define IB_SMP_UNSUP_METH_ATTR cpu_to_be16(0x000C) 44#define IB_SMP_INVALID_FIELD cpu_to_be16(0x001C) 45 46static int reply(struct ib_smp *smp) 47{ 48 /* 49 * The verbs framework will handle the directed/LID route 50 * packet changes. 51 */ 52 smp->method = IB_MGMT_METHOD_GET_RESP; 53 if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) 54 smp->status |= IB_SMP_DIRECTION; 55 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 56} 57 58static int recv_subn_get_nodedescription(struct ib_smp *smp, 59 struct ib_device *ibdev) 60{ 61 if (smp->attr_mod) 62 smp->status |= IB_SMP_INVALID_FIELD; 63 64 memcpy(smp->data, ibdev->node_desc, sizeof(smp->data)); 65 66 return reply(smp); 67} 68 69struct nodeinfo { 70 u8 base_version; 71 u8 class_version; 72 u8 node_type; 73 u8 num_ports; 74 __be64 sys_guid; 75 __be64 node_guid; 76 __be64 port_guid; 77 __be16 partition_cap; 78 __be16 device_id; 79 __be32 revision; 80 u8 local_port_num; 81 u8 vendor_id[3]; 82} __attribute__ ((packed)); 83 84static int recv_subn_get_nodeinfo(struct ib_smp *smp, 85 struct ib_device *ibdev, u8 port) 86{ 87 struct nodeinfo *nip = (struct nodeinfo *)&smp->data; 88 struct ipath_devdata *dd = to_idev(ibdev)->dd; 89 u32 vendor, majrev, minrev; 90 91 /* GUID 0 is illegal */ 92 if (smp->attr_mod || (dd->ipath_guid == 0)) 93 smp->status |= IB_SMP_INVALID_FIELD; 94 95 nip->base_version = 1; 96 nip->class_version = 1; 97 nip->node_type = 1; /* channel adapter */ 98 /* 99 * XXX The num_ports value will need a layer function to get 100 * the value if we ever have more than one IB port on a chip. 101 * We will also need to get the GUID for the port. 102 */ 103 nip->num_ports = ibdev->phys_port_cnt; 104 /* This is already in network order */ 105 nip->sys_guid = to_idev(ibdev)->sys_image_guid; 106 nip->node_guid = dd->ipath_guid; 107 nip->port_guid = dd->ipath_guid; 108 nip->partition_cap = cpu_to_be16(ipath_get_npkeys(dd)); 109 nip->device_id = cpu_to_be16(dd->ipath_deviceid); 110 majrev = dd->ipath_majrev; 111 minrev = dd->ipath_minrev; 112 nip->revision = cpu_to_be32((majrev << 16) | minrev); 113 nip->local_port_num = port; 114 vendor = dd->ipath_vendorid; 115 nip->vendor_id[0] = IPATH_SRC_OUI_1; 116 nip->vendor_id[1] = IPATH_SRC_OUI_2; 117 nip->vendor_id[2] = IPATH_SRC_OUI_3; 118 119 return reply(smp); 120} 121 122static int recv_subn_get_guidinfo(struct ib_smp *smp, 123 struct ib_device *ibdev) 124{ 125 u32 startgx = 8 * be32_to_cpu(smp->attr_mod); 126 __be64 *p = (__be64 *) smp->data; 127 128 /* 32 blocks of 8 64-bit GUIDs per block */ 129 130 memset(smp->data, 0, sizeof(smp->data)); 131 132 /* 133 * We only support one GUID for now. If this changes, the 134 * portinfo.guid_cap field needs to be updated too. 135 */ 136 if (startgx == 0) { 137 __be64 g = to_idev(ibdev)->dd->ipath_guid; 138 if (g == 0) 139 /* GUID 0 is illegal */ 140 smp->status |= IB_SMP_INVALID_FIELD; 141 else 142 /* The first is a copy of the read-only HW GUID. */ 143 *p = g; 144 } else 145 smp->status |= IB_SMP_INVALID_FIELD; 146 147 return reply(smp); 148} 149 150static void set_link_width_enabled(struct ipath_devdata *dd, u32 w) 151{ 152 (void) dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_LWID_ENB, w); 153} 154 155static void set_link_speed_enabled(struct ipath_devdata *dd, u32 s) 156{ 157 (void) dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_SPD_ENB, s); 158} 159 160static int get_overrunthreshold(struct ipath_devdata *dd) 161{ 162 return (dd->ipath_ibcctrl >> 163 INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) & 164 INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK; 165} 166 167/** 168 * set_overrunthreshold - set the overrun threshold 169 * @dd: the infinipath device 170 * @n: the new threshold 171 * 172 * Note that this will only take effect when the link state changes. 173 */ 174static int set_overrunthreshold(struct ipath_devdata *dd, unsigned n) 175{ 176 unsigned v; 177 178 v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) & 179 INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK; 180 if (v != n) { 181 dd->ipath_ibcctrl &= 182 ~(INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK << 183 INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT); 184 dd->ipath_ibcctrl |= 185 (u64) n << INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT; 186 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, 187 dd->ipath_ibcctrl); 188 } 189 return 0; 190} 191 192static int get_phyerrthreshold(struct ipath_devdata *dd) 193{ 194 return (dd->ipath_ibcctrl >> 195 INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & 196 INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; 197} 198 199/** 200 * set_phyerrthreshold - set the physical error threshold 201 * @dd: the infinipath device 202 * @n: the new threshold 203 * 204 * Note that this will only take effect when the link state changes. 205 */ 206static int set_phyerrthreshold(struct ipath_devdata *dd, unsigned n) 207{ 208 unsigned v; 209 210 v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) & 211 INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK; 212 if (v != n) { 213 dd->ipath_ibcctrl &= 214 ~(INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK << 215 INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT); 216 dd->ipath_ibcctrl |= 217 (u64) n << INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT; 218 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, 219 dd->ipath_ibcctrl); 220 } 221 return 0; 222} 223 224/** 225 * get_linkdowndefaultstate - get the default linkdown state 226 * @dd: the infinipath device 227 * 228 * Returns zero if the default is POLL, 1 if the default is SLEEP. 229 */ 230static int get_linkdowndefaultstate(struct ipath_devdata *dd) 231{ 232 return !!(dd->ipath_ibcctrl & INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE); 233} 234 235static int recv_subn_get_portinfo(struct ib_smp *smp, 236 struct ib_device *ibdev, u8 port) 237{ 238 struct ipath_ibdev *dev; 239 struct ipath_devdata *dd; 240 struct ib_port_info *pip = (struct ib_port_info *)smp->data; 241 u16 lid; 242 u8 ibcstat; 243 u8 mtu; 244 int ret; 245 246 if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt) { 247 smp->status |= IB_SMP_INVALID_FIELD; 248 ret = reply(smp); 249 goto bail; 250 } 251 252 dev = to_idev(ibdev); 253 dd = dev->dd; 254 255 /* Clear all fields. Only set the non-zero fields. */ 256 memset(smp->data, 0, sizeof(smp->data)); 257 258 /* Only return the mkey if the protection field allows it. */ 259 if (smp->method == IB_MGMT_METHOD_SET || dev->mkey == smp->mkey || 260 dev->mkeyprot == 0) 261 pip->mkey = dev->mkey; 262 pip->gid_prefix = dev->gid_prefix; 263 lid = dd->ipath_lid; 264 pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE; 265 pip->sm_lid = cpu_to_be16(dev->sm_lid); 266 pip->cap_mask = cpu_to_be32(dev->port_cap_flags); 267 /* pip->diag_code; */ 268 pip->mkey_lease_period = cpu_to_be16(dev->mkey_lease_period); 269 pip->local_port_num = port; 270 pip->link_width_enabled = dd->ipath_link_width_enabled; 271 pip->link_width_supported = dd->ipath_link_width_supported; 272 pip->link_width_active = dd->ipath_link_width_active; 273 pip->linkspeed_portstate = dd->ipath_link_speed_supported << 4; 274 ibcstat = dd->ipath_lastibcstat; 275 /* map LinkState to IB portinfo values. */ 276 pip->linkspeed_portstate |= ipath_ib_linkstate(dd, ibcstat) + 1; 277 278 pip->portphysstate_linkdown = 279 (ipath_cvt_physportstate[ibcstat & dd->ibcs_lts_mask] << 4) | 280 (get_linkdowndefaultstate(dd) ? 1 : 2); 281 pip->mkeyprot_resv_lmc = (dev->mkeyprot << 6) | dd->ipath_lmc; 282 pip->linkspeedactive_enabled = (dd->ipath_link_speed_active << 4) | 283 dd->ipath_link_speed_enabled; 284 switch (dd->ipath_ibmtu) { 285 case 4096: 286 mtu = IB_MTU_4096; 287 break; 288 case 2048: 289 mtu = IB_MTU_2048; 290 break; 291 case 1024: 292 mtu = IB_MTU_1024; 293 break; 294 case 512: 295 mtu = IB_MTU_512; 296 break; 297 case 256: 298 mtu = IB_MTU_256; 299 break; 300 default: /* oops, something is wrong */ 301 mtu = IB_MTU_2048; 302 break; 303 } 304 pip->neighbormtu_mastersmsl = (mtu << 4) | dev->sm_sl; 305 pip->vlcap_inittype = 0x10; /* VLCap = VL0, InitType = 0 */ 306 pip->vl_high_limit = dev->vl_high_limit; 307 /* pip->vl_arb_high_cap; // only one VL */ 308 /* pip->vl_arb_low_cap; // only one VL */ 309 /* InitTypeReply = 0 */ 310 /* our mtu cap depends on whether 4K MTU enabled or not */ 311 pip->inittypereply_mtucap = ipath_mtu4096 ? IB_MTU_4096 : IB_MTU_2048; 312 /* HCAs ignore VLStallCount and HOQLife */ 313 /* pip->vlstallcnt_hoqlife; */ 314 pip->operationalvl_pei_peo_fpi_fpo = 0x10; /* OVLs = 1 */ 315 pip->mkey_violations = cpu_to_be16(dev->mkey_violations); 316 /* P_KeyViolations are counted by hardware. */ 317 pip->pkey_violations = 318 cpu_to_be16((ipath_get_cr_errpkey(dd) - 319 dev->z_pkey_violations) & 0xFFFF); 320 pip->qkey_violations = cpu_to_be16(dev->qkey_violations); 321 /* Only the hardware GUID is supported for now */ 322 pip->guid_cap = 1; 323 pip->clientrereg_resv_subnetto = dev->subnet_timeout; 324 /* 32.768 usec. response time (guessing) */ 325 pip->resv_resptimevalue = 3; 326 pip->localphyerrors_overrunerrors = 327 (get_phyerrthreshold(dd) << 4) | 328 get_overrunthreshold(dd); 329 /* pip->max_credit_hint; */ 330 if (dev->port_cap_flags & IB_PORT_LINK_LATENCY_SUP) { 331 u32 v; 332 333 v = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_LINKLATENCY); 334 pip->link_roundtrip_latency[0] = v >> 16; 335 pip->link_roundtrip_latency[1] = v >> 8; 336 pip->link_roundtrip_latency[2] = v; 337 } 338 339 ret = reply(smp); 340 341bail: 342 return ret; 343} 344 345/** 346 * get_pkeys - return the PKEY table for port 0 347 * @dd: the infinipath device 348 * @pkeys: the pkey table is placed here 349 */ 350static int get_pkeys(struct ipath_devdata *dd, u16 * pkeys) 351{ 352 /* always a kernel port, no locking needed */ 353 struct ipath_portdata *pd = dd->ipath_pd[0]; 354 355 memcpy(pkeys, pd->port_pkeys, sizeof(pd->port_pkeys)); 356 357 return 0; 358} 359 360static int recv_subn_get_pkeytable(struct ib_smp *smp, 361 struct ib_device *ibdev) 362{ 363 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); 364 u16 *p = (u16 *) smp->data; 365 __be16 *q = (__be16 *) smp->data; 366 367 /* 64 blocks of 32 16-bit P_Key entries */ 368 369 memset(smp->data, 0, sizeof(smp->data)); 370 if (startpx == 0) { 371 struct ipath_ibdev *dev = to_idev(ibdev); 372 unsigned i, n = ipath_get_npkeys(dev->dd); 373 374 get_pkeys(dev->dd, p); 375 376 for (i = 0; i < n; i++) 377 q[i] = cpu_to_be16(p[i]); 378 } else 379 smp->status |= IB_SMP_INVALID_FIELD; 380 381 return reply(smp); 382} 383 384static int recv_subn_set_guidinfo(struct ib_smp *smp, 385 struct ib_device *ibdev) 386{ 387 /* The only GUID we support is the first read-only entry. */ 388 return recv_subn_get_guidinfo(smp, ibdev); 389} 390 391/** 392 * set_linkdowndefaultstate - set the default linkdown state 393 * @dd: the infinipath device 394 * @sleep: the new state 395 * 396 * Note that this will only take effect when the link state changes. 397 */ 398static int set_linkdowndefaultstate(struct ipath_devdata *dd, int sleep) 399{ 400 if (sleep) 401 dd->ipath_ibcctrl |= INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE; 402 else 403 dd->ipath_ibcctrl &= ~INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE; 404 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, 405 dd->ipath_ibcctrl); 406 return 0; 407} 408 409/** 410 * recv_subn_set_portinfo - set port information 411 * @smp: the incoming SM packet 412 * @ibdev: the infiniband device 413 * @port: the port on the device 414 * 415 * Set Portinfo (see ch. 14.2.5.6). 416 */ 417static int recv_subn_set_portinfo(struct ib_smp *smp, 418 struct ib_device *ibdev, u8 port) 419{ 420 struct ib_port_info *pip = (struct ib_port_info *)smp->data; 421 struct ib_event event; 422 struct ipath_ibdev *dev; 423 struct ipath_devdata *dd; 424 char clientrereg = 0; 425 u16 lid, smlid; 426 u8 lwe; 427 u8 lse; 428 u8 state; 429 u16 lstate; 430 u32 mtu; 431 int ret, ore; 432 433 if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt) 434 goto err; 435 436 dev = to_idev(ibdev); 437 dd = dev->dd; 438 event.device = ibdev; 439 event.element.port_num = port; 440 441 dev->mkey = pip->mkey; 442 dev->gid_prefix = pip->gid_prefix; 443 dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period); 444 445 lid = be16_to_cpu(pip->lid); 446 if (dd->ipath_lid != lid || 447 dd->ipath_lmc != (pip->mkeyprot_resv_lmc & 7)) { 448 /* Must be a valid unicast LID address. */ 449 if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) 450 goto err; 451 ipath_set_lid(dd, lid, pip->mkeyprot_resv_lmc & 7); 452 event.event = IB_EVENT_LID_CHANGE; 453 ib_dispatch_event(&event); 454 } 455 456 smlid = be16_to_cpu(pip->sm_lid); 457 if (smlid != dev->sm_lid) { 458 /* Must be a valid unicast LID address. */ 459 if (smlid == 0 || smlid >= IPATH_MULTICAST_LID_BASE) 460 goto err; 461 dev->sm_lid = smlid; 462 event.event = IB_EVENT_SM_CHANGE; 463 ib_dispatch_event(&event); 464 } 465 466 /* Allow 1x or 4x to be set (see 14.2.6.6). */ 467 lwe = pip->link_width_enabled; 468 if (lwe) { 469 if (lwe == 0xFF) 470 lwe = dd->ipath_link_width_supported; 471 else if (lwe >= 16 || (lwe & ~dd->ipath_link_width_supported)) 472 goto err; 473 set_link_width_enabled(dd, lwe); 474 } 475 476 /* Allow 2.5 or 5.0 Gbs. */ 477 lse = pip->linkspeedactive_enabled & 0xF; 478 if (lse) { 479 if (lse == 15) 480 lse = dd->ipath_link_speed_supported; 481 else if (lse >= 8 || (lse & ~dd->ipath_link_speed_supported)) 482 goto err; 483 set_link_speed_enabled(dd, lse); 484 } 485 486 /* Set link down default state. */ 487 switch (pip->portphysstate_linkdown & 0xF) { 488 case 0: /* NOP */ 489 break; 490 case 1: /* SLEEP */ 491 if (set_linkdowndefaultstate(dd, 1)) 492 goto err; 493 break; 494 case 2: /* POLL */ 495 if (set_linkdowndefaultstate(dd, 0)) 496 goto err; 497 break; 498 default: 499 goto err; 500 } 501 502 dev->mkeyprot = pip->mkeyprot_resv_lmc >> 6; 503 dev->vl_high_limit = pip->vl_high_limit; 504 505 switch ((pip->neighbormtu_mastersmsl >> 4) & 0xF) { 506 case IB_MTU_256: 507 mtu = 256; 508 break; 509 case IB_MTU_512: 510 mtu = 512; 511 break; 512 case IB_MTU_1024: 513 mtu = 1024; 514 break; 515 case IB_MTU_2048: 516 mtu = 2048; 517 break; 518 case IB_MTU_4096: 519 if (!ipath_mtu4096) 520 goto err; 521 mtu = 4096; 522 break; 523 default: 524 /* XXX We have already partially updated our state! */ 525 goto err; 526 } 527 ipath_set_mtu(dd, mtu); 528 529 dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF; 530 531 /* We only support VL0 */ 532 if (((pip->operationalvl_pei_peo_fpi_fpo >> 4) & 0xF) > 1) 533 goto err; 534 535 if (pip->mkey_violations == 0) 536 dev->mkey_violations = 0; 537 538 /* 539 * Hardware counter can't be reset so snapshot and subtract 540 * later. 541 */ 542 if (pip->pkey_violations == 0) 543 dev->z_pkey_violations = ipath_get_cr_errpkey(dd); 544 545 if (pip->qkey_violations == 0) 546 dev->qkey_violations = 0; 547 548 ore = pip->localphyerrors_overrunerrors; 549 if (set_phyerrthreshold(dd, (ore >> 4) & 0xF)) 550 goto err; 551 552 if (set_overrunthreshold(dd, (ore & 0xF))) 553 goto err; 554 555 dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F; 556 557 if (pip->clientrereg_resv_subnetto & 0x80) { 558 clientrereg = 1; 559 event.event = IB_EVENT_CLIENT_REREGISTER; 560 ib_dispatch_event(&event); 561 } 562 563 /* 564 * Do the port state change now that the other link parameters 565 * have been set. 566 * Changing the port physical state only makes sense if the link 567 * is down or is being set to down. 568 */ 569 state = pip->linkspeed_portstate & 0xF; 570 lstate = (pip->portphysstate_linkdown >> 4) & 0xF; 571 if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP)) 572 goto err; 573 574 /* 575 * Only state changes of DOWN, ARM, and ACTIVE are valid 576 * and must be in the correct state to take effect (see 7.2.6). 577 */ 578 switch (state) { 579 case IB_PORT_NOP: 580 if (lstate == 0) 581 break; 582 /* FALLTHROUGH */ 583 case IB_PORT_DOWN: 584 if (lstate == 0) 585 lstate = IPATH_IB_LINKDOWN_ONLY; 586 else if (lstate == 1) 587 lstate = IPATH_IB_LINKDOWN_SLEEP; 588 else if (lstate == 2) 589 lstate = IPATH_IB_LINKDOWN; 590 else if (lstate == 3) 591 lstate = IPATH_IB_LINKDOWN_DISABLE; 592 else 593 goto err; 594 ipath_set_linkstate(dd, lstate); 595 if (lstate == IPATH_IB_LINKDOWN_DISABLE) { 596 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 597 goto done; 598 } 599 ipath_wait_linkstate(dd, IPATH_LINKINIT | IPATH_LINKARMED | 600 IPATH_LINKACTIVE, 1000); 601 break; 602 case IB_PORT_ARMED: 603 ipath_set_linkstate(dd, IPATH_IB_LINKARM); 604 break; 605 case IB_PORT_ACTIVE: 606 ipath_set_linkstate(dd, IPATH_IB_LINKACTIVE); 607 break; 608 default: 609 /* XXX We have already partially updated our state! */ 610 goto err; 611 } 612 613 ret = recv_subn_get_portinfo(smp, ibdev, port); 614 615 if (clientrereg) 616 pip->clientrereg_resv_subnetto |= 0x80; 617 618 goto done; 619 620err: 621 smp->status |= IB_SMP_INVALID_FIELD; 622 ret = recv_subn_get_portinfo(smp, ibdev, port); 623 624done: 625 return ret; 626} 627 628/** 629 * rm_pkey - decrecment the reference count for the given PKEY 630 * @dd: the infinipath device 631 * @key: the PKEY index 632 * 633 * Return true if this was the last reference and the hardware table entry 634 * needs to be changed. 635 */ 636static int rm_pkey(struct ipath_devdata *dd, u16 key) 637{ 638 int i; 639 int ret; 640 641 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { 642 if (dd->ipath_pkeys[i] != key) 643 continue; 644 if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) { 645 dd->ipath_pkeys[i] = 0; 646 ret = 1; 647 goto bail; 648 } 649 break; 650 } 651 652 ret = 0; 653 654bail: 655 return ret; 656} 657 658/** 659 * add_pkey - add the given PKEY to the hardware table 660 * @dd: the infinipath device 661 * @key: the PKEY 662 * 663 * Return an error code if unable to add the entry, zero if no change, 664 * or 1 if the hardware PKEY register needs to be updated. 665 */ 666static int add_pkey(struct ipath_devdata *dd, u16 key) 667{ 668 int i; 669 u16 lkey = key & 0x7FFF; 670 int any = 0; 671 int ret; 672 673 if (lkey == 0x7FFF) { 674 ret = 0; 675 goto bail; 676 } 677 678 /* Look for an empty slot or a matching PKEY. */ 679 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { 680 if (!dd->ipath_pkeys[i]) { 681 any++; 682 continue; 683 } 684 /* If it matches exactly, try to increment the ref count */ 685 if (dd->ipath_pkeys[i] == key) { 686 if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) { 687 ret = 0; 688 goto bail; 689 } 690 /* Lost the race. Look for an empty slot below. */ 691 atomic_dec(&dd->ipath_pkeyrefs[i]); 692 any++; 693 } 694 /* 695 * It makes no sense to have both the limited and unlimited 696 * PKEY set at the same time since the unlimited one will 697 * disable the limited one. 698 */ 699 if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) { 700 ret = -EEXIST; 701 goto bail; 702 } 703 } 704 if (!any) { 705 ret = -EBUSY; 706 goto bail; 707 } 708 for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { 709 if (!dd->ipath_pkeys[i] && 710 atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) { 711 /* for ipathstats, etc. */ 712 ipath_stats.sps_pkeys[i] = lkey; 713 dd->ipath_pkeys[i] = key; 714 ret = 1; 715 goto bail; 716 } 717 } 718 ret = -EBUSY; 719 720bail: 721 return ret; 722} 723 724/** 725 * set_pkeys - set the PKEY table for port 0 726 * @dd: the infinipath device 727 * @pkeys: the PKEY table 728 */ 729static int set_pkeys(struct ipath_devdata *dd, u16 *pkeys) 730{ 731 struct ipath_portdata *pd; 732 int i; 733 int changed = 0; 734 735 /* always a kernel port, no locking needed */ 736 pd = dd->ipath_pd[0]; 737 738 for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) { 739 u16 key = pkeys[i]; 740 u16 okey = pd->port_pkeys[i]; 741 742 if (key == okey) 743 continue; 744 /* 745 * The value of this PKEY table entry is changing. 746 * Remove the old entry in the hardware's array of PKEYs. 747 */ 748 if (okey & 0x7FFF) 749 changed |= rm_pkey(dd, okey); 750 if (key & 0x7FFF) { 751 int ret = add_pkey(dd, key); 752 753 if (ret < 0) 754 key = 0; 755 else 756 changed |= ret; 757 } 758 pd->port_pkeys[i] = key; 759 } 760 if (changed) { 761 u64 pkey; 762 763 pkey = (u64) dd->ipath_pkeys[0] | 764 ((u64) dd->ipath_pkeys[1] << 16) | 765 ((u64) dd->ipath_pkeys[2] << 32) | 766 ((u64) dd->ipath_pkeys[3] << 48); 767 ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n", 768 (unsigned long long) pkey); 769 ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey, 770 pkey); 771 } 772 return 0; 773} 774 775static int recv_subn_set_pkeytable(struct ib_smp *smp, 776 struct ib_device *ibdev) 777{ 778 u32 startpx = 32 * (be32_to_cpu(smp->attr_mod) & 0xffff); 779 __be16 *p = (__be16 *) smp->data; 780 u16 *q = (u16 *) smp->data; 781 struct ipath_ibdev *dev = to_idev(ibdev); 782 unsigned i, n = ipath_get_npkeys(dev->dd); 783 784 for (i = 0; i < n; i++) 785 q[i] = be16_to_cpu(p[i]); 786 787 if (startpx != 0 || set_pkeys(dev->dd, q) != 0) 788 smp->status |= IB_SMP_INVALID_FIELD; 789 790 return recv_subn_get_pkeytable(smp, ibdev); 791} 792 793static int recv_pma_get_classportinfo(struct ib_pma_mad *pmp) 794{ 795 struct ib_class_port_info *p = 796 (struct ib_class_port_info *)pmp->data; 797 798 memset(pmp->data, 0, sizeof(pmp->data)); 799 800 if (pmp->mad_hdr.attr_mod != 0) 801 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 802 803 /* Indicate AllPortSelect is valid (only one port anyway) */ 804 p->capability_mask = cpu_to_be16(1 << 8); 805 p->base_version = 1; 806 p->class_version = 1; 807 /* 808 * Expected response time is 4.096 usec. * 2^18 == 1.073741824 809 * sec. 810 */ 811 p->resp_time_value = 18; 812 813 return reply((struct ib_smp *) pmp); 814} 815 816/* 817 * The PortSamplesControl.CounterMasks field is an array of 3 bit fields 818 * which specify the N'th counter's capabilities. See ch. 16.1.3.2. 819 * We support 5 counters which only count the mandatory quantities. 820 */ 821#define COUNTER_MASK(q, n) (q << ((9 - n) * 3)) 822#define COUNTER_MASK0_9 cpu_to_be32(COUNTER_MASK(1, 0) | \ 823 COUNTER_MASK(1, 1) | \ 824 COUNTER_MASK(1, 2) | \ 825 COUNTER_MASK(1, 3) | \ 826 COUNTER_MASK(1, 4)) 827 828static int recv_pma_get_portsamplescontrol(struct ib_pma_mad *pmp, 829 struct ib_device *ibdev, u8 port) 830{ 831 struct ib_pma_portsamplescontrol *p = 832 (struct ib_pma_portsamplescontrol *)pmp->data; 833 struct ipath_ibdev *dev = to_idev(ibdev); 834 struct ipath_cregs const *crp = dev->dd->ipath_cregs; 835 unsigned long flags; 836 u8 port_select = p->port_select; 837 838 memset(pmp->data, 0, sizeof(pmp->data)); 839 840 p->port_select = port_select; 841 if (pmp->mad_hdr.attr_mod != 0 || 842 (port_select != port && port_select != 0xFF)) 843 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 844 /* 845 * Ticks are 10x the link transfer period which for 2.5Gbs is 4 846 * nsec. 0 == 4 nsec., 1 == 8 nsec., ..., 255 == 1020 nsec. Sample 847 * intervals are counted in ticks. Since we use Linux timers, that 848 * count in jiffies, we can't sample for less than 1000 ticks if HZ 849 * == 1000 (4000 ticks if HZ is 250). link_speed_active returns 2 for 850 * DDR, 1 for SDR, set the tick to 1 for DDR, 0 for SDR on chips that 851 * have hardware support for delaying packets. 852 */ 853 if (crp->cr_psstat) 854 p->tick = dev->dd->ipath_link_speed_active - 1; 855 else 856 p->tick = 250; /* 1 usec. */ 857 p->counter_width = 4; /* 32 bit counters */ 858 p->counter_mask0_9 = COUNTER_MASK0_9; 859 spin_lock_irqsave(&dev->pending_lock, flags); 860 if (crp->cr_psstat) 861 p->sample_status = ipath_read_creg32(dev->dd, crp->cr_psstat); 862 else 863 p->sample_status = dev->pma_sample_status; 864 p->sample_start = cpu_to_be32(dev->pma_sample_start); 865 p->sample_interval = cpu_to_be32(dev->pma_sample_interval); 866 p->tag = cpu_to_be16(dev->pma_tag); 867 p->counter_select[0] = dev->pma_counter_select[0]; 868 p->counter_select[1] = dev->pma_counter_select[1]; 869 p->counter_select[2] = dev->pma_counter_select[2]; 870 p->counter_select[3] = dev->pma_counter_select[3]; 871 p->counter_select[4] = dev->pma_counter_select[4]; 872 spin_unlock_irqrestore(&dev->pending_lock, flags); 873 874 return reply((struct ib_smp *) pmp); 875} 876 877static int recv_pma_set_portsamplescontrol(struct ib_pma_mad *pmp, 878 struct ib_device *ibdev, u8 port) 879{ 880 struct ib_pma_portsamplescontrol *p = 881 (struct ib_pma_portsamplescontrol *)pmp->data; 882 struct ipath_ibdev *dev = to_idev(ibdev); 883 struct ipath_cregs const *crp = dev->dd->ipath_cregs; 884 unsigned long flags; 885 u8 status; 886 int ret; 887 888 if (pmp->mad_hdr.attr_mod != 0 || 889 (p->port_select != port && p->port_select != 0xFF)) { 890 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 891 ret = reply((struct ib_smp *) pmp); 892 goto bail; 893 } 894 895 spin_lock_irqsave(&dev->pending_lock, flags); 896 if (crp->cr_psstat) 897 status = ipath_read_creg32(dev->dd, crp->cr_psstat); 898 else 899 status = dev->pma_sample_status; 900 if (status == IB_PMA_SAMPLE_STATUS_DONE) { 901 dev->pma_sample_start = be32_to_cpu(p->sample_start); 902 dev->pma_sample_interval = be32_to_cpu(p->sample_interval); 903 dev->pma_tag = be16_to_cpu(p->tag); 904 dev->pma_counter_select[0] = p->counter_select[0]; 905 dev->pma_counter_select[1] = p->counter_select[1]; 906 dev->pma_counter_select[2] = p->counter_select[2]; 907 dev->pma_counter_select[3] = p->counter_select[3]; 908 dev->pma_counter_select[4] = p->counter_select[4]; 909 if (crp->cr_psstat) { 910 ipath_write_creg(dev->dd, crp->cr_psinterval, 911 dev->pma_sample_interval); 912 ipath_write_creg(dev->dd, crp->cr_psstart, 913 dev->pma_sample_start); 914 } else 915 dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_STARTED; 916 } 917 spin_unlock_irqrestore(&dev->pending_lock, flags); 918 919 ret = recv_pma_get_portsamplescontrol(pmp, ibdev, port); 920 921bail: 922 return ret; 923} 924 925static u64 get_counter(struct ipath_ibdev *dev, 926 struct ipath_cregs const *crp, 927 __be16 sel) 928{ 929 u64 ret; 930 931 switch (sel) { 932 case IB_PMA_PORT_XMIT_DATA: 933 ret = (crp->cr_psxmitdatacount) ? 934 ipath_read_creg32(dev->dd, crp->cr_psxmitdatacount) : 935 dev->ipath_sword; 936 break; 937 case IB_PMA_PORT_RCV_DATA: 938 ret = (crp->cr_psrcvdatacount) ? 939 ipath_read_creg32(dev->dd, crp->cr_psrcvdatacount) : 940 dev->ipath_rword; 941 break; 942 case IB_PMA_PORT_XMIT_PKTS: 943 ret = (crp->cr_psxmitpktscount) ? 944 ipath_read_creg32(dev->dd, crp->cr_psxmitpktscount) : 945 dev->ipath_spkts; 946 break; 947 case IB_PMA_PORT_RCV_PKTS: 948 ret = (crp->cr_psrcvpktscount) ? 949 ipath_read_creg32(dev->dd, crp->cr_psrcvpktscount) : 950 dev->ipath_rpkts; 951 break; 952 case IB_PMA_PORT_XMIT_WAIT: 953 ret = (crp->cr_psxmitwaitcount) ? 954 ipath_read_creg32(dev->dd, crp->cr_psxmitwaitcount) : 955 dev->ipath_xmit_wait; 956 break; 957 default: 958 ret = 0; 959 } 960 961 return ret; 962} 963 964static int recv_pma_get_portsamplesresult(struct ib_pma_mad *pmp, 965 struct ib_device *ibdev) 966{ 967 struct ib_pma_portsamplesresult *p = 968 (struct ib_pma_portsamplesresult *)pmp->data; 969 struct ipath_ibdev *dev = to_idev(ibdev); 970 struct ipath_cregs const *crp = dev->dd->ipath_cregs; 971 u8 status; 972 int i; 973 974 memset(pmp->data, 0, sizeof(pmp->data)); 975 p->tag = cpu_to_be16(dev->pma_tag); 976 if (crp->cr_psstat) 977 status = ipath_read_creg32(dev->dd, crp->cr_psstat); 978 else 979 status = dev->pma_sample_status; 980 p->sample_status = cpu_to_be16(status); 981 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++) 982 p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 : 983 cpu_to_be32( 984 get_counter(dev, crp, dev->pma_counter_select[i])); 985 986 return reply((struct ib_smp *) pmp); 987} 988 989static int recv_pma_get_portsamplesresult_ext(struct ib_pma_mad *pmp, 990 struct ib_device *ibdev) 991{ 992 struct ib_pma_portsamplesresult_ext *p = 993 (struct ib_pma_portsamplesresult_ext *)pmp->data; 994 struct ipath_ibdev *dev = to_idev(ibdev); 995 struct ipath_cregs const *crp = dev->dd->ipath_cregs; 996 u8 status; 997 int i; 998 999 memset(pmp->data, 0, sizeof(pmp->data)); 1000 p->tag = cpu_to_be16(dev->pma_tag); 1001 if (crp->cr_psstat) 1002 status = ipath_read_creg32(dev->dd, crp->cr_psstat); 1003 else 1004 status = dev->pma_sample_status; 1005 p->sample_status = cpu_to_be16(status); 1006 /* 64 bits */ 1007 p->extended_width = cpu_to_be32(0x80000000); 1008 for (i = 0; i < ARRAY_SIZE(dev->pma_counter_select); i++) 1009 p->counter[i] = (status != IB_PMA_SAMPLE_STATUS_DONE) ? 0 : 1010 cpu_to_be64( 1011 get_counter(dev, crp, dev->pma_counter_select[i])); 1012 1013 return reply((struct ib_smp *) pmp); 1014} 1015 1016static int recv_pma_get_portcounters(struct ib_pma_mad *pmp, 1017 struct ib_device *ibdev, u8 port) 1018{ 1019 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) 1020 pmp->data; 1021 struct ipath_ibdev *dev = to_idev(ibdev); 1022 struct ipath_verbs_counters cntrs; 1023 u8 port_select = p->port_select; 1024 1025 ipath_get_counters(dev->dd, &cntrs); 1026 1027 /* Adjust counters for any resets done. */ 1028 cntrs.symbol_error_counter -= dev->z_symbol_error_counter; 1029 cntrs.link_error_recovery_counter -= 1030 dev->z_link_error_recovery_counter; 1031 cntrs.link_downed_counter -= dev->z_link_downed_counter; 1032 cntrs.port_rcv_errors += dev->rcv_errors; 1033 cntrs.port_rcv_errors -= dev->z_port_rcv_errors; 1034 cntrs.port_rcv_remphys_errors -= dev->z_port_rcv_remphys_errors; 1035 cntrs.port_xmit_discards -= dev->z_port_xmit_discards; 1036 cntrs.port_xmit_data -= dev->z_port_xmit_data; 1037 cntrs.port_rcv_data -= dev->z_port_rcv_data; 1038 cntrs.port_xmit_packets -= dev->z_port_xmit_packets; 1039 cntrs.port_rcv_packets -= dev->z_port_rcv_packets; 1040 cntrs.local_link_integrity_errors -= 1041 dev->z_local_link_integrity_errors; 1042 cntrs.excessive_buffer_overrun_errors -= 1043 dev->z_excessive_buffer_overrun_errors; 1044 cntrs.vl15_dropped -= dev->z_vl15_dropped; 1045 cntrs.vl15_dropped += dev->n_vl15_dropped; 1046 1047 memset(pmp->data, 0, sizeof(pmp->data)); 1048 1049 p->port_select = port_select; 1050 if (pmp->mad_hdr.attr_mod != 0 || 1051 (port_select != port && port_select != 0xFF)) 1052 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1053 1054 if (cntrs.symbol_error_counter > 0xFFFFUL) 1055 p->symbol_error_counter = cpu_to_be16(0xFFFF); 1056 else 1057 p->symbol_error_counter = 1058 cpu_to_be16((u16)cntrs.symbol_error_counter); 1059 if (cntrs.link_error_recovery_counter > 0xFFUL) 1060 p->link_error_recovery_counter = 0xFF; 1061 else 1062 p->link_error_recovery_counter = 1063 (u8)cntrs.link_error_recovery_counter; 1064 if (cntrs.link_downed_counter > 0xFFUL) 1065 p->link_downed_counter = 0xFF; 1066 else 1067 p->link_downed_counter = (u8)cntrs.link_downed_counter; 1068 if (cntrs.port_rcv_errors > 0xFFFFUL) 1069 p->port_rcv_errors = cpu_to_be16(0xFFFF); 1070 else 1071 p->port_rcv_errors = 1072 cpu_to_be16((u16) cntrs.port_rcv_errors); 1073 if (cntrs.port_rcv_remphys_errors > 0xFFFFUL) 1074 p->port_rcv_remphys_errors = cpu_to_be16(0xFFFF); 1075 else 1076 p->port_rcv_remphys_errors = 1077 cpu_to_be16((u16)cntrs.port_rcv_remphys_errors); 1078 if (cntrs.port_xmit_discards > 0xFFFFUL) 1079 p->port_xmit_discards = cpu_to_be16(0xFFFF); 1080 else 1081 p->port_xmit_discards = 1082 cpu_to_be16((u16)cntrs.port_xmit_discards); 1083 if (cntrs.local_link_integrity_errors > 0xFUL) 1084 cntrs.local_link_integrity_errors = 0xFUL; 1085 if (cntrs.excessive_buffer_overrun_errors > 0xFUL) 1086 cntrs.excessive_buffer_overrun_errors = 0xFUL; 1087 p->link_overrun_errors = (cntrs.local_link_integrity_errors << 4) | 1088 cntrs.excessive_buffer_overrun_errors; 1089 if (cntrs.vl15_dropped > 0xFFFFUL) 1090 p->vl15_dropped = cpu_to_be16(0xFFFF); 1091 else 1092 p->vl15_dropped = cpu_to_be16((u16)cntrs.vl15_dropped); 1093 if (cntrs.port_xmit_data > 0xFFFFFFFFUL) 1094 p->port_xmit_data = cpu_to_be32(0xFFFFFFFF); 1095 else 1096 p->port_xmit_data = cpu_to_be32((u32)cntrs.port_xmit_data); 1097 if (cntrs.port_rcv_data > 0xFFFFFFFFUL) 1098 p->port_rcv_data = cpu_to_be32(0xFFFFFFFF); 1099 else 1100 p->port_rcv_data = cpu_to_be32((u32)cntrs.port_rcv_data); 1101 if (cntrs.port_xmit_packets > 0xFFFFFFFFUL) 1102 p->port_xmit_packets = cpu_to_be32(0xFFFFFFFF); 1103 else 1104 p->port_xmit_packets = 1105 cpu_to_be32((u32)cntrs.port_xmit_packets); 1106 if (cntrs.port_rcv_packets > 0xFFFFFFFFUL) 1107 p->port_rcv_packets = cpu_to_be32(0xFFFFFFFF); 1108 else 1109 p->port_rcv_packets = 1110 cpu_to_be32((u32) cntrs.port_rcv_packets); 1111 1112 return reply((struct ib_smp *) pmp); 1113} 1114 1115static int recv_pma_get_portcounters_ext(struct ib_pma_mad *pmp, 1116 struct ib_device *ibdev, u8 port) 1117{ 1118 struct ib_pma_portcounters_ext *p = 1119 (struct ib_pma_portcounters_ext *)pmp->data; 1120 struct ipath_ibdev *dev = to_idev(ibdev); 1121 u64 swords, rwords, spkts, rpkts, xwait; 1122 u8 port_select = p->port_select; 1123 1124 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts, 1125 &rpkts, &xwait); 1126 1127 /* Adjust counters for any resets done. */ 1128 swords -= dev->z_port_xmit_data; 1129 rwords -= dev->z_port_rcv_data; 1130 spkts -= dev->z_port_xmit_packets; 1131 rpkts -= dev->z_port_rcv_packets; 1132 1133 memset(pmp->data, 0, sizeof(pmp->data)); 1134 1135 p->port_select = port_select; 1136 if (pmp->mad_hdr.attr_mod != 0 || 1137 (port_select != port && port_select != 0xFF)) 1138 pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; 1139 1140 p->port_xmit_data = cpu_to_be64(swords); 1141 p->port_rcv_data = cpu_to_be64(rwords); 1142 p->port_xmit_packets = cpu_to_be64(spkts); 1143 p->port_rcv_packets = cpu_to_be64(rpkts); 1144 p->port_unicast_xmit_packets = cpu_to_be64(dev->n_unicast_xmit); 1145 p->port_unicast_rcv_packets = cpu_to_be64(dev->n_unicast_rcv); 1146 p->port_multicast_xmit_packets = cpu_to_be64(dev->n_multicast_xmit); 1147 p->port_multicast_rcv_packets = cpu_to_be64(dev->n_multicast_rcv); 1148 1149 return reply((struct ib_smp *) pmp); 1150} 1151 1152static int recv_pma_set_portcounters(struct ib_pma_mad *pmp, 1153 struct ib_device *ibdev, u8 port) 1154{ 1155 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) 1156 pmp->data; 1157 struct ipath_ibdev *dev = to_idev(ibdev); 1158 struct ipath_verbs_counters cntrs; 1159 1160 /* 1161 * Since the HW doesn't support clearing counters, we save the 1162 * current count and subtract it from future responses. 1163 */ 1164 ipath_get_counters(dev->dd, &cntrs); 1165 1166 if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR) 1167 dev->z_symbol_error_counter = cntrs.symbol_error_counter; 1168 1169 if (p->counter_select & IB_PMA_SEL_LINK_ERROR_RECOVERY) 1170 dev->z_link_error_recovery_counter = 1171 cntrs.link_error_recovery_counter; 1172 1173 if (p->counter_select & IB_PMA_SEL_LINK_DOWNED) 1174 dev->z_link_downed_counter = cntrs.link_downed_counter; 1175 1176 if (p->counter_select & IB_PMA_SEL_PORT_RCV_ERRORS) 1177 dev->z_port_rcv_errors = 1178 cntrs.port_rcv_errors + dev->rcv_errors; 1179 1180 if (p->counter_select & IB_PMA_SEL_PORT_RCV_REMPHYS_ERRORS) 1181 dev->z_port_rcv_remphys_errors = 1182 cntrs.port_rcv_remphys_errors; 1183 1184 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DISCARDS) 1185 dev->z_port_xmit_discards = cntrs.port_xmit_discards; 1186 1187 if (p->counter_select & IB_PMA_SEL_LOCAL_LINK_INTEGRITY_ERRORS) 1188 dev->z_local_link_integrity_errors = 1189 cntrs.local_link_integrity_errors; 1190 1191 if (p->counter_select & IB_PMA_SEL_EXCESSIVE_BUFFER_OVERRUNS) 1192 dev->z_excessive_buffer_overrun_errors = 1193 cntrs.excessive_buffer_overrun_errors; 1194 1195 if (p->counter_select & IB_PMA_SEL_PORT_VL15_DROPPED) { 1196 dev->n_vl15_dropped = 0; 1197 dev->z_vl15_dropped = cntrs.vl15_dropped; 1198 } 1199 1200 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_DATA) 1201 dev->z_port_xmit_data = cntrs.port_xmit_data; 1202 1203 if (p->counter_select & IB_PMA_SEL_PORT_RCV_DATA) 1204 dev->z_port_rcv_data = cntrs.port_rcv_data; 1205 1206 if (p->counter_select & IB_PMA_SEL_PORT_XMIT_PACKETS) 1207 dev->z_port_xmit_packets = cntrs.port_xmit_packets; 1208 1209 if (p->counter_select & IB_PMA_SEL_PORT_RCV_PACKETS) 1210 dev->z_port_rcv_packets = cntrs.port_rcv_packets; 1211 1212 return recv_pma_get_portcounters(pmp, ibdev, port); 1213} 1214 1215static int recv_pma_set_portcounters_ext(struct ib_pma_mad *pmp, 1216 struct ib_device *ibdev, u8 port) 1217{ 1218 struct ib_pma_portcounters *p = (struct ib_pma_portcounters *) 1219 pmp->data; 1220 struct ipath_ibdev *dev = to_idev(ibdev); 1221 u64 swords, rwords, spkts, rpkts, xwait; 1222 1223 ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts, 1224 &rpkts, &xwait); 1225 1226 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA) 1227 dev->z_port_xmit_data = swords; 1228 1229 if (p->counter_select & IB_PMA_SELX_PORT_RCV_DATA) 1230 dev->z_port_rcv_data = rwords; 1231 1232 if (p->counter_select & IB_PMA_SELX_PORT_XMIT_PACKETS) 1233 dev->z_port_xmit_packets = spkts; 1234 1235 if (p->counter_select & IB_PMA_SELX_PORT_RCV_PACKETS) 1236 dev->z_port_rcv_packets = rpkts; 1237 1238 if (p->counter_select & IB_PMA_SELX_PORT_UNI_XMIT_PACKETS) 1239 dev->n_unicast_xmit = 0; 1240 1241 if (p->counter_select & IB_PMA_SELX_PORT_UNI_RCV_PACKETS) 1242 dev->n_unicast_rcv = 0; 1243 1244 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_XMIT_PACKETS) 1245 dev->n_multicast_xmit = 0; 1246 1247 if (p->counter_select & IB_PMA_SELX_PORT_MULTI_RCV_PACKETS) 1248 dev->n_multicast_rcv = 0; 1249 1250 return recv_pma_get_portcounters_ext(pmp, ibdev, port); 1251} 1252 1253static int process_subn(struct ib_device *ibdev, int mad_flags, 1254 u8 port_num, struct ib_mad *in_mad, 1255 struct ib_mad *out_mad) 1256{ 1257 struct ib_smp *smp = (struct ib_smp *)out_mad; 1258 struct ipath_ibdev *dev = to_idev(ibdev); 1259 int ret; 1260 1261 *out_mad = *in_mad; 1262 if (smp->class_version != 1) { 1263 smp->status |= IB_SMP_UNSUP_VERSION; 1264 ret = reply(smp); 1265 goto bail; 1266 } 1267 1268 /* Is the mkey in the process of expiring? */ 1269 if (dev->mkey_lease_timeout && 1270 time_after_eq(jiffies, dev->mkey_lease_timeout)) { 1271 /* Clear timeout and mkey protection field. */ 1272 dev->mkey_lease_timeout = 0; 1273 dev->mkeyprot = 0; 1274 } 1275 1276 /* 1277 * M_Key checking depends on 1278 * Portinfo:M_Key_protect_bits 1279 */ 1280 if ((mad_flags & IB_MAD_IGNORE_MKEY) == 0 && dev->mkey != 0 && 1281 dev->mkey != smp->mkey && 1282 (smp->method == IB_MGMT_METHOD_SET || 1283 (smp->method == IB_MGMT_METHOD_GET && 1284 dev->mkeyprot >= 2))) { 1285 if (dev->mkey_violations != 0xFFFF) 1286 ++dev->mkey_violations; 1287 if (dev->mkey_lease_timeout || 1288 dev->mkey_lease_period == 0) { 1289 ret = IB_MAD_RESULT_SUCCESS | 1290 IB_MAD_RESULT_CONSUMED; 1291 goto bail; 1292 } 1293 dev->mkey_lease_timeout = jiffies + 1294 dev->mkey_lease_period * HZ; 1295 /* Future: Generate a trap notice. */ 1296 ret = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 1297 goto bail; 1298 } else if (dev->mkey_lease_timeout) 1299 dev->mkey_lease_timeout = 0; 1300 1301 switch (smp->method) { 1302 case IB_MGMT_METHOD_GET: 1303 switch (smp->attr_id) { 1304 case IB_SMP_ATTR_NODE_DESC: 1305 ret = recv_subn_get_nodedescription(smp, ibdev); 1306 goto bail; 1307 case IB_SMP_ATTR_NODE_INFO: 1308 ret = recv_subn_get_nodeinfo(smp, ibdev, port_num); 1309 goto bail; 1310 case IB_SMP_ATTR_GUID_INFO: 1311 ret = recv_subn_get_guidinfo(smp, ibdev); 1312 goto bail; 1313 case IB_SMP_ATTR_PORT_INFO: 1314 ret = recv_subn_get_portinfo(smp, ibdev, port_num); 1315 goto bail; 1316 case IB_SMP_ATTR_PKEY_TABLE: 1317 ret = recv_subn_get_pkeytable(smp, ibdev); 1318 goto bail; 1319 case IB_SMP_ATTR_SM_INFO: 1320 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) { 1321 ret = IB_MAD_RESULT_SUCCESS | 1322 IB_MAD_RESULT_CONSUMED; 1323 goto bail; 1324 } 1325 if (dev->port_cap_flags & IB_PORT_SM) { 1326 ret = IB_MAD_RESULT_SUCCESS; 1327 goto bail; 1328 } 1329 /* FALLTHROUGH */ 1330 default: 1331 smp->status |= IB_SMP_UNSUP_METH_ATTR; 1332 ret = reply(smp); 1333 goto bail; 1334 } 1335 1336 case IB_MGMT_METHOD_SET: 1337 switch (smp->attr_id) { 1338 case IB_SMP_ATTR_GUID_INFO: 1339 ret = recv_subn_set_guidinfo(smp, ibdev); 1340 goto bail; 1341 case IB_SMP_ATTR_PORT_INFO: 1342 ret = recv_subn_set_portinfo(smp, ibdev, port_num); 1343 goto bail; 1344 case IB_SMP_ATTR_PKEY_TABLE: 1345 ret = recv_subn_set_pkeytable(smp, ibdev); 1346 goto bail; 1347 case IB_SMP_ATTR_SM_INFO: 1348 if (dev->port_cap_flags & IB_PORT_SM_DISABLED) { 1349 ret = IB_MAD_RESULT_SUCCESS | 1350 IB_MAD_RESULT_CONSUMED; 1351 goto bail; 1352 } 1353 if (dev->port_cap_flags & IB_PORT_SM) { 1354 ret = IB_MAD_RESULT_SUCCESS; 1355 goto bail; 1356 } 1357 /* FALLTHROUGH */ 1358 default: 1359 smp->status |= IB_SMP_UNSUP_METH_ATTR; 1360 ret = reply(smp); 1361 goto bail; 1362 } 1363 1364 case IB_MGMT_METHOD_TRAP: 1365 case IB_MGMT_METHOD_REPORT: 1366 case IB_MGMT_METHOD_REPORT_RESP: 1367 case IB_MGMT_METHOD_TRAP_REPRESS: 1368 case IB_MGMT_METHOD_GET_RESP: 1369 /* 1370 * The ib_mad module will call us to process responses 1371 * before checking for other consumers. 1372 * Just tell the caller to process it normally. 1373 */ 1374 ret = IB_MAD_RESULT_SUCCESS; 1375 goto bail; 1376 default: 1377 smp->status |= IB_SMP_UNSUP_METHOD; 1378 ret = reply(smp); 1379 } 1380 1381bail: 1382 return ret; 1383} 1384 1385static int process_perf(struct ib_device *ibdev, u8 port_num, 1386 struct ib_mad *in_mad, 1387 struct ib_mad *out_mad) 1388{ 1389 struct ib_pma_mad *pmp = (struct ib_pma_mad *)out_mad; 1390 int ret; 1391 1392 *out_mad = *in_mad; 1393 if (pmp->mad_hdr.class_version != 1) { 1394 pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION; 1395 ret = reply((struct ib_smp *) pmp); 1396 goto bail; 1397 } 1398 1399 switch (pmp->mad_hdr.method) { 1400 case IB_MGMT_METHOD_GET: 1401 switch (pmp->mad_hdr.attr_id) { 1402 case IB_PMA_CLASS_PORT_INFO: 1403 ret = recv_pma_get_classportinfo(pmp); 1404 goto bail; 1405 case IB_PMA_PORT_SAMPLES_CONTROL: 1406 ret = recv_pma_get_portsamplescontrol(pmp, ibdev, 1407 port_num); 1408 goto bail; 1409 case IB_PMA_PORT_SAMPLES_RESULT: 1410 ret = recv_pma_get_portsamplesresult(pmp, ibdev); 1411 goto bail; 1412 case IB_PMA_PORT_SAMPLES_RESULT_EXT: 1413 ret = recv_pma_get_portsamplesresult_ext(pmp, 1414 ibdev); 1415 goto bail; 1416 case IB_PMA_PORT_COUNTERS: 1417 ret = recv_pma_get_portcounters(pmp, ibdev, 1418 port_num); 1419 goto bail; 1420 case IB_PMA_PORT_COUNTERS_EXT: 1421 ret = recv_pma_get_portcounters_ext(pmp, ibdev, 1422 port_num); 1423 goto bail; 1424 default: 1425 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; 1426 ret = reply((struct ib_smp *) pmp); 1427 goto bail; 1428 } 1429 1430 case IB_MGMT_METHOD_SET: 1431 switch (pmp->mad_hdr.attr_id) { 1432 case IB_PMA_PORT_SAMPLES_CONTROL: 1433 ret = recv_pma_set_portsamplescontrol(pmp, ibdev, 1434 port_num); 1435 goto bail; 1436 case IB_PMA_PORT_COUNTERS: 1437 ret = recv_pma_set_portcounters(pmp, ibdev, 1438 port_num); 1439 goto bail; 1440 case IB_PMA_PORT_COUNTERS_EXT: 1441 ret = recv_pma_set_portcounters_ext(pmp, ibdev, 1442 port_num); 1443 goto bail; 1444 default: 1445 pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; 1446 ret = reply((struct ib_smp *) pmp); 1447 goto bail; 1448 } 1449 1450 case IB_MGMT_METHOD_GET_RESP: 1451 /* 1452 * The ib_mad module will call us to process responses 1453 * before checking for other consumers. 1454 * Just tell the caller to process it normally. 1455 */ 1456 ret = IB_MAD_RESULT_SUCCESS; 1457 goto bail; 1458 default: 1459 pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD; 1460 ret = reply((struct ib_smp *) pmp); 1461 } 1462 1463bail: 1464 return ret; 1465} 1466 1467/** 1468 * ipath_process_mad - process an incoming MAD packet 1469 * @ibdev: the infiniband device this packet came in on 1470 * @mad_flags: MAD flags 1471 * @port_num: the port number this packet came in on 1472 * @in_wc: the work completion entry for this packet 1473 * @in_grh: the global route header for this packet 1474 * @in_mad: the incoming MAD 1475 * @out_mad: any outgoing MAD reply 1476 * 1477 * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not 1478 * interested in processing. 1479 * 1480 * Note that the verbs framework has already done the MAD sanity checks, 1481 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE 1482 * MADs. 1483 * 1484 * This is called by the ib_mad module. 1485 */ 1486int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 1487 struct ib_wc *in_wc, struct ib_grh *in_grh, 1488 struct ib_mad *in_mad, struct ib_mad *out_mad) 1489{ 1490 int ret; 1491 1492 switch (in_mad->mad_hdr.mgmt_class) { 1493 case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: 1494 case IB_MGMT_CLASS_SUBN_LID_ROUTED: 1495 ret = process_subn(ibdev, mad_flags, port_num, 1496 in_mad, out_mad); 1497 goto bail; 1498 case IB_MGMT_CLASS_PERF_MGMT: 1499 ret = process_perf(ibdev, port_num, in_mad, out_mad); 1500 goto bail; 1501 default: 1502 ret = IB_MAD_RESULT_SUCCESS; 1503 } 1504 1505bail: 1506 return ret; 1507} 1508