1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2009 Yahoo! Inc. 5 * Copyright (c) 2011-2015 LSI Corp. 6 * Copyright (c) 2013-2015 Avago Technologies 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * Avago Technologies (LSI) MPT-Fusion Host Adapter FreeBSD 31 * 32 * $FreeBSD$ 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 /* Communications core for Avago Technologies (LSI) MPT2 */ 39 40 /* TODO Move headers to mpsvar */ 41 #include <sys/types.h> 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/selinfo.h> 46 #include <sys/lock.h> 47 #include <sys/mutex.h> 48 #include <sys/module.h> 49 #include <sys/bus.h> 50 #include <sys/conf.h> 51 #include <sys/bio.h> 52 #include <sys/malloc.h> 53 #include <sys/uio.h> 54 #include <sys/sysctl.h> 55 #include <sys/smp.h> 56 #include <sys/queue.h> 57 #include <sys/kthread.h> 58 #include <sys/taskqueue.h> 59 #include <sys/endian.h> 60 #include <sys/eventhandler.h> 61 #include <sys/sbuf.h> 62 #include <sys/priv.h> 63 64 #include <machine/bus.h> 65 #include <machine/resource.h> 66 #include <sys/rman.h> 67 #include <sys/proc.h> 68 69 #include <dev/pci/pcivar.h> 70 71 #include <cam/cam.h> 72 #include <cam/scsi/scsi_all.h> 73 74 #include <dev/mps/mpi/mpi2_type.h> 75 #include <dev/mps/mpi/mpi2.h> 76 #include <dev/mps/mpi/mpi2_ioc.h> 77 #include <dev/mps/mpi/mpi2_sas.h> 78 #include <dev/mps/mpi/mpi2_cnfg.h> 79 #include <dev/mps/mpi/mpi2_init.h> 80 #include <dev/mps/mpi/mpi2_tool.h> 81 #include <dev/mps/mps_ioctl.h> 82 #include <dev/mps/mpsvar.h> 83 #include <dev/mps/mps_table.h> 84 85 static int mps_diag_reset(struct mps_softc *sc, int sleep_flag); 86 static int mps_init_queues(struct mps_softc *sc); 87 static void mps_resize_queues(struct mps_softc *sc); 88 static int mps_message_unit_reset(struct mps_softc *sc, int sleep_flag); 89 static int mps_transition_operational(struct mps_softc *sc); 90 static int mps_iocfacts_allocate(struct mps_softc *sc, uint8_t attaching); 91 static void mps_iocfacts_free(struct mps_softc *sc); 92 static void mps_startup(void *arg); 93 static int mps_send_iocinit(struct mps_softc *sc); 94 static int mps_alloc_queues(struct mps_softc *sc); 95 static int mps_alloc_hw_queues(struct mps_softc *sc); 96 static int mps_alloc_replies(struct mps_softc *sc); 97 static int mps_alloc_requests(struct mps_softc *sc); 98 static int mps_attach_log(struct mps_softc *sc); 99 static __inline void mps_complete_command(struct mps_softc *sc, 100 struct mps_command *cm); 101 static void mps_dispatch_event(struct mps_softc *sc, uintptr_t data, 102 MPI2_EVENT_NOTIFICATION_REPLY *reply); 103 static void mps_config_complete(struct mps_softc *sc, struct mps_command *cm); 104 static void mps_periodic(void *); 105 static int mps_reregister_events(struct mps_softc *sc); 106 static void mps_enqueue_request(struct mps_softc *sc, struct mps_command *cm); 107 static int mps_get_iocfacts(struct mps_softc *sc, MPI2_IOC_FACTS_REPLY *facts); 108 static int mps_wait_db_ack(struct mps_softc *sc, int timeout, int sleep_flag); 109 static int mps_debug_sysctl(SYSCTL_HANDLER_ARGS); 110 static int mps_dump_reqs(SYSCTL_HANDLER_ARGS); 111 static void mps_parse_debug(struct mps_softc *sc, char *list); 112 113 SYSCTL_NODE(_hw, OID_AUTO, mps, CTLFLAG_RD, 0, "MPS Driver Parameters"); 114 115 MALLOC_DEFINE(M_MPT2, "mps", "mpt2 driver memory"); 116 MALLOC_DECLARE(M_MPSUSER); 117 118 /* 119 * Do a "Diagnostic Reset" aka a hard reset. This should get the chip out of 120 * any state and back to its initialization state machine. 121 */ 122 static char mpt2_reset_magic[] = { 0x00, 0x0f, 0x04, 0x0b, 0x02, 0x07, 0x0d }; 123 124 /* Added this union to smoothly convert le64toh cm->cm_desc.Words. 125 * Compiler only support unint64_t to be passed as argument. 126 * Otherwise it will throw below error 127 * "aggregate value used where an integer was expected" 128 */ 129 130 typedef union _reply_descriptor { 131 u64 word; 132 struct { 133 u32 low; 134 u32 high; 135 } u; 136 }reply_descriptor,address_descriptor; 137 138 /* Rate limit chain-fail messages to 1 per minute */ 139 static struct timeval mps_chainfail_interval = { 60, 0 }; 140 141 /* 142 * sleep_flag can be either CAN_SLEEP or NO_SLEEP. 143 * If this function is called from process context, it can sleep 144 * and there is no harm to sleep, in case if this fuction is called 145 * from Interrupt handler, we can not sleep and need NO_SLEEP flag set. 146 * based on sleep flags driver will call either msleep, pause or DELAY. 147 * msleep and pause are of same variant, but pause is used when mps_mtx 148 * is not hold by driver. 149 * 150 */ 151 static int 152 mps_diag_reset(struct mps_softc *sc,int sleep_flag) 153 { 154 uint32_t reg; 155 int i, error, tries = 0; 156 uint8_t first_wait_done = FALSE; 157 158 mps_dprint(sc, MPS_INIT, "%s entered\n", __func__); 159 160 /* Clear any pending interrupts */ 161 mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0); 162 163 /* 164 * Force NO_SLEEP for threads prohibited to sleep 165 * e.a Thread from interrupt handler are prohibited to sleep. 166 */ 167 if (curthread->td_no_sleeping != 0) 168 sleep_flag = NO_SLEEP; 169 170 mps_dprint(sc, MPS_INIT, "sequence start, sleep_flag= %d\n", sleep_flag); 171 172 /* Push the magic sequence */ 173 error = ETIMEDOUT; 174 while (tries++ < 20) { 175 for (i = 0; i < sizeof(mpt2_reset_magic); i++) 176 mps_regwrite(sc, MPI2_WRITE_SEQUENCE_OFFSET, 177 mpt2_reset_magic[i]); 178 /* wait 100 msec */ 179 if (mtx_owned(&sc->mps_mtx) && sleep_flag == CAN_SLEEP) 180 msleep(&sc->msleep_fake_chan, &sc->mps_mtx, 0, 181 "mpsdiag", hz/10); 182 else if (sleep_flag == CAN_SLEEP) 183 pause("mpsdiag", hz/10); 184 else 185 DELAY(100 * 1000); 186 187 reg = mps_regread(sc, MPI2_HOST_DIAGNOSTIC_OFFSET); 188 if (reg & MPI2_DIAG_DIAG_WRITE_ENABLE) { 189 error = 0; 190 break; 191 } 192 } 193 if (error) { 194 mps_dprint(sc, MPS_INIT, "sequence failed, error=%d, exit\n", 195 error); 196 return (error); 197 } 198 199 /* Send the actual reset. XXX need to refresh the reg? */ 200 reg |= MPI2_DIAG_RESET_ADAPTER; 201 mps_dprint(sc, MPS_INIT, "sequence success, sending reset, reg= 0x%x\n", 202 reg); 203 mps_regwrite(sc, MPI2_HOST_DIAGNOSTIC_OFFSET, reg); 204 205 /* Wait up to 300 seconds in 50ms intervals */ 206 error = ETIMEDOUT; 207 for (i = 0; i < 6000; i++) { 208 /* 209 * Wait 50 msec. If this is the first time through, wait 256 210 * msec to satisfy Diag Reset timing requirements. 211 */ 212 if (first_wait_done) { 213 if (mtx_owned(&sc->mps_mtx) && sleep_flag == CAN_SLEEP) 214 msleep(&sc->msleep_fake_chan, &sc->mps_mtx, 0, 215 "mpsdiag", hz/20); 216 else if (sleep_flag == CAN_SLEEP) 217 pause("mpsdiag", hz/20); 218 else 219 DELAY(50 * 1000); 220 } else { 221 DELAY(256 * 1000); 222 first_wait_done = TRUE; 223 } 224 /* 225 * Check for the RESET_ADAPTER bit to be cleared first, then 226 * wait for the RESET state to be cleared, which takes a little 227 * longer. 228 */ 229 reg = mps_regread(sc, MPI2_HOST_DIAGNOSTIC_OFFSET); 230 if (reg & MPI2_DIAG_RESET_ADAPTER) { 231 continue; 232 } 233 reg = mps_regread(sc, MPI2_DOORBELL_OFFSET); 234 if ((reg & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_RESET) { 235 error = 0; 236 break; 237 } 238 } 239 if (error) { 240 mps_dprint(sc, MPS_INIT, "reset failed, error= %d, exit\n", 241 error); 242 return (error); 243 } 244 245 mps_regwrite(sc, MPI2_WRITE_SEQUENCE_OFFSET, 0x0); 246 mps_dprint(sc, MPS_INIT, "diag reset success, exit\n"); 247 248 return (0); 249 } 250 251 static int 252 mps_message_unit_reset(struct mps_softc *sc, int sleep_flag) 253 { 254 int error; 255 256 MPS_FUNCTRACE(sc); 257 258 mps_dprint(sc, MPS_INIT, "%s entered\n", __func__); 259 260 error = 0; 261 mps_regwrite(sc, MPI2_DOORBELL_OFFSET, 262 MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET << 263 MPI2_DOORBELL_FUNCTION_SHIFT); 264 265 if (mps_wait_db_ack(sc, 5, sleep_flag) != 0) { 266 mps_dprint(sc, MPS_INIT|MPS_FAULT, 267 "Doorbell handshake failed\n"); 268 error = ETIMEDOUT; 269 } 270 271 mps_dprint(sc, MPS_INIT, "%s exit\n", __func__); 272 return (error); 273 } 274 275 static int 276 mps_transition_ready(struct mps_softc *sc) 277 { 278 uint32_t reg, state; 279 int error, tries = 0; 280 int sleep_flags; 281 282 MPS_FUNCTRACE(sc); 283 /* If we are in attach call, do not sleep */ 284 sleep_flags = (sc->mps_flags & MPS_FLAGS_ATTACH_DONE) 285 ? CAN_SLEEP:NO_SLEEP; 286 error = 0; 287 288 mps_dprint(sc, MPS_INIT, "%s entered, sleep_flags= %d\n", 289 __func__, sleep_flags); 290 291 while (tries++ < 1200) { 292 reg = mps_regread(sc, MPI2_DOORBELL_OFFSET); 293 mps_dprint(sc, MPS_INIT, " Doorbell= 0x%x\n", reg); 294 295 /* 296 * Ensure the IOC is ready to talk. If it's not, try 297 * resetting it. 298 */ 299 if (reg & MPI2_DOORBELL_USED) { 300 mps_dprint(sc, MPS_INIT, " Not ready, sending diag " 301 "reset\n"); 302 mps_diag_reset(sc, sleep_flags); 303 DELAY(50000); 304 continue; 305 } 306 307 /* Is the adapter owned by another peer? */ 308 if ((reg & MPI2_DOORBELL_WHO_INIT_MASK) == 309 (MPI2_WHOINIT_PCI_PEER << MPI2_DOORBELL_WHO_INIT_SHIFT)) { 310 mps_dprint(sc, MPS_INIT|MPS_FAULT, "IOC is under the " 311 "control of another peer host, aborting " 312 "initialization.\n"); 313 error = ENXIO; 314 break; 315 } 316 317 state = reg & MPI2_IOC_STATE_MASK; 318 if (state == MPI2_IOC_STATE_READY) { 319 /* Ready to go! */ 320 error = 0; 321 break; 322 } else if (state == MPI2_IOC_STATE_FAULT) { 323 mps_dprint(sc, MPS_INIT|MPS_FAULT, "IOC in fault " 324 "state 0x%x, resetting\n", 325 state & MPI2_DOORBELL_FAULT_CODE_MASK); 326 mps_diag_reset(sc, sleep_flags); 327 } else if (state == MPI2_IOC_STATE_OPERATIONAL) { 328 /* Need to take ownership */ 329 mps_message_unit_reset(sc, sleep_flags); 330 } else if (state == MPI2_IOC_STATE_RESET) { 331 /* Wait a bit, IOC might be in transition */ 332 mps_dprint(sc, MPS_INIT|MPS_FAULT, 333 "IOC in unexpected reset state\n"); 334 } else { 335 mps_dprint(sc, MPS_INIT|MPS_FAULT, 336 "IOC in unknown state 0x%x\n", state); 337 error = EINVAL; 338 break; 339 } 340 341 /* Wait 50ms for things to settle down. */ 342 DELAY(50000); 343 } 344 345 if (error) 346 mps_dprint(sc, MPS_INIT|MPS_FAULT, 347 "Cannot transition IOC to ready\n"); 348 mps_dprint(sc, MPS_INIT, "%s exit\n", __func__); 349 350 return (error); 351 } 352 353 static int 354 mps_transition_operational(struct mps_softc *sc) 355 { 356 uint32_t reg, state; 357 int error; 358 359 MPS_FUNCTRACE(sc); 360 361 error = 0; 362 reg = mps_regread(sc, MPI2_DOORBELL_OFFSET); 363 mps_dprint(sc, MPS_INIT, "%s entered, Doorbell= 0x%x\n", __func__, reg); 364 365 state = reg & MPI2_IOC_STATE_MASK; 366 if (state != MPI2_IOC_STATE_READY) { 367 mps_dprint(sc, MPS_INIT, "IOC not ready\n"); 368 if ((error = mps_transition_ready(sc)) != 0) { 369 mps_dprint(sc, MPS_INIT|MPS_FAULT, 370 "failed to transition ready, exit\n"); 371 return (error); 372 } 373 } 374 375 error = mps_send_iocinit(sc); 376 mps_dprint(sc, MPS_INIT, "%s exit\n", __func__); 377 378 return (error); 379 } 380 381 static void 382 mps_resize_queues(struct mps_softc *sc) 383 { 384 u_int reqcr, prireqcr, maxio, sges_per_frame; 385 386 /* 387 * Size the queues. Since the reply queues always need one free 388 * entry, we'll deduct one reply message here. The LSI documents 389 * suggest instead to add a count to the request queue, but I think 390 * that it's better to deduct from reply queue. 391 */ 392 prireqcr = MAX(1, sc->max_prireqframes); 393 prireqcr = MIN(prireqcr, sc->facts->HighPriorityCredit); 394 395 reqcr = MAX(2, sc->max_reqframes); 396 reqcr = MIN(reqcr, sc->facts->RequestCredit); 397 398 sc->num_reqs = prireqcr + reqcr; 399 sc->num_prireqs = prireqcr; 400 sc->num_replies = MIN(sc->max_replyframes + sc->max_evtframes, 401 sc->facts->MaxReplyDescriptorPostQueueDepth) - 1; 402 403 /* Store the request frame size in bytes rather than as 32bit words */ 404 sc->reqframesz = sc->facts->IOCRequestFrameSize * 4; 405 406 /* 407 * Max IO Size is Page Size * the following: 408 * ((SGEs per frame - 1 for chain element) * Max Chain Depth) 409 * + 1 for no chain needed in last frame 410 * 411 * If user suggests a Max IO size to use, use the smaller of the 412 * user's value and the calculated value as long as the user's 413 * value is larger than 0. The user's value is in pages. 414 */ 415 sges_per_frame = sc->reqframesz / sizeof(MPI2_SGE_SIMPLE64) - 1; 416 maxio = (sges_per_frame * sc->facts->MaxChainDepth + 1) * PAGE_SIZE; 417 418 /* 419 * If I/O size limitation requested, then use it and pass up to CAM. 420 * If not, use MAXPHYS as an optimization hint, but report HW limit. 421 */ 422 if (sc->max_io_pages > 0) { 423 maxio = min(maxio, sc->max_io_pages * PAGE_SIZE); 424 sc->maxio = maxio; 425 } else { 426 sc->maxio = maxio; 427 maxio = min(maxio, MAXPHYS); 428 } 429 430 sc->num_chains = (maxio / PAGE_SIZE + sges_per_frame - 2) / 431 sges_per_frame * reqcr; 432 if (sc->max_chains > 0 && sc->max_chains < sc->num_chains) 433 sc->num_chains = sc->max_chains; 434 435 /* 436 * Figure out the number of MSIx-based queues. If the firmware or 437 * user has done something crazy and not allowed enough credit for 438 * the queues to be useful then don't enable multi-queue. 439 */ 440 if (sc->facts->MaxMSIxVectors < 2) 441 sc->msi_msgs = 1; 442 443 if (sc->msi_msgs > 1) { 444 sc->msi_msgs = MIN(sc->msi_msgs, mp_ncpus); 445 sc->msi_msgs = MIN(sc->msi_msgs, sc->facts->MaxMSIxVectors); 446 if (sc->num_reqs / sc->msi_msgs < 2) 447 sc->msi_msgs = 1; 448 } 449 450 mps_dprint(sc, MPS_INIT, "Sized queues to q=%d reqs=%d replies=%d\n", 451 sc->msi_msgs, sc->num_reqs, sc->num_replies); 452 } 453 454 /* 455 * This is called during attach and when re-initializing due to a Diag Reset. 456 * IOC Facts is used to allocate many of the structures needed by the driver. 457 * If called from attach, de-allocation is not required because the driver has 458 * not allocated any structures yet, but if called from a Diag Reset, previously 459 * allocated structures based on IOC Facts will need to be freed and re- 460 * allocated bases on the latest IOC Facts. 461 */ 462 static int 463 mps_iocfacts_allocate(struct mps_softc *sc, uint8_t attaching) 464 { 465 int error; 466 Mpi2IOCFactsReply_t saved_facts; 467 uint8_t saved_mode, reallocating; 468 469 mps_dprint(sc, MPS_INIT|MPS_TRACE, "%s entered\n", __func__); 470 471 /* Save old IOC Facts and then only reallocate if Facts have changed */ 472 if (!attaching) { 473 bcopy(sc->facts, &saved_facts, sizeof(MPI2_IOC_FACTS_REPLY)); 474 } 475 476 /* 477 * Get IOC Facts. In all cases throughout this function, panic if doing 478 * a re-initialization and only return the error if attaching so the OS 479 * can handle it. 480 */ 481 if ((error = mps_get_iocfacts(sc, sc->facts)) != 0) { 482 if (attaching) { 483 mps_dprint(sc, MPS_INIT|MPS_FAULT, "Failed to get " 484 "IOC Facts with error %d, exit\n", error); 485 return (error); 486 } else { 487 panic("%s failed to get IOC Facts with error %d\n", 488 __func__, error); 489 } 490 } 491 492 MPS_DPRINT_PAGE(sc, MPS_XINFO, iocfacts, sc->facts); 493 494 snprintf(sc->fw_version, sizeof(sc->fw_version), 495 "%02d.%02d.%02d.%02d", 496 sc->facts->FWVersion.Struct.Major, 497 sc->facts->FWVersion.Struct.Minor, 498 sc->facts->FWVersion.Struct.Unit, 499 sc->facts->FWVersion.Struct.Dev); 500 501 mps_dprint(sc, MPS_INFO, "Firmware: %s, Driver: %s\n", sc->fw_version, 502 MPS_DRIVER_VERSION); 503 mps_dprint(sc, MPS_INFO, "IOCCapabilities: %b\n", 504 sc->facts->IOCCapabilities, 505 "\20" "\3ScsiTaskFull" "\4DiagTrace" "\5SnapBuf" "\6ExtBuf" 506 "\7EEDP" "\10BiDirTarg" "\11Multicast" "\14TransRetry" "\15IR" 507 "\16EventReplay" "\17RaidAccel" "\20MSIXIndex" "\21HostDisc"); 508 509 /* 510 * If the chip doesn't support event replay then a hard reset will be 511 * required to trigger a full discovery. Do the reset here then 512 * retransition to Ready. A hard reset might have already been done, 513 * but it doesn't hurt to do it again. Only do this if attaching, not 514 * for a Diag Reset. 515 */ 516 if (attaching && ((sc->facts->IOCCapabilities & 517 MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY) == 0)) { 518 mps_dprint(sc, MPS_INIT, "No event replay, reseting\n"); 519 mps_diag_reset(sc, NO_SLEEP); 520 if ((error = mps_transition_ready(sc)) != 0) { 521 mps_dprint(sc, MPS_INIT|MPS_FAULT, "Failed to " 522 "transition to ready with error %d, exit\n", 523 error); 524 return (error); 525 } 526 } 527 528 /* 529 * Set flag if IR Firmware is loaded. If the RAID Capability has 530 * changed from the previous IOC Facts, log a warning, but only if 531 * checking this after a Diag Reset and not during attach. 532 */ 533 saved_mode = sc->ir_firmware; 534 if (sc->facts->IOCCapabilities & 535 MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) 536 sc->ir_firmware = 1; 537 if (!attaching) { 538 if (sc->ir_firmware != saved_mode) { 539 mps_dprint(sc, MPS_INIT|MPS_FAULT, "new IR/IT mode " 540 "in IOC Facts does not match previous mode\n"); 541 } 542 } 543 544 /* Only deallocate and reallocate if relevant IOC Facts have changed */ 545 reallocating = FALSE; 546 sc->mps_flags &= ~MPS_FLAGS_REALLOCATED; 547 548 if ((!attaching) && 549 ((saved_facts.MsgVersion != sc->facts->MsgVersion) || 550 (saved_facts.HeaderVersion != sc->facts->HeaderVersion) || 551 (saved_facts.MaxChainDepth != sc->facts->MaxChainDepth) || 552 (saved_facts.RequestCredit != sc->facts->RequestCredit) || 553 (saved_facts.ProductID != sc->facts->ProductID) || 554 (saved_facts.IOCCapabilities != sc->facts->IOCCapabilities) || 555 (saved_facts.IOCRequestFrameSize != 556 sc->facts->IOCRequestFrameSize) || 557 (saved_facts.MaxTargets != sc->facts->MaxTargets) || 558 (saved_facts.MaxSasExpanders != sc->facts->MaxSasExpanders) || 559 (saved_facts.MaxEnclosures != sc->facts->MaxEnclosures) || 560 (saved_facts.HighPriorityCredit != sc->facts->HighPriorityCredit) || 561 (saved_facts.MaxReplyDescriptorPostQueueDepth != 562 sc->facts->MaxReplyDescriptorPostQueueDepth) || 563 (saved_facts.ReplyFrameSize != sc->facts->ReplyFrameSize) || 564 (saved_facts.MaxVolumes != sc->facts->MaxVolumes) || 565 (saved_facts.MaxPersistentEntries != 566 sc->facts->MaxPersistentEntries))) { 567 reallocating = TRUE; 568 569 /* Record that we reallocated everything */ 570 sc->mps_flags |= MPS_FLAGS_REALLOCATED; 571 } 572 573 /* 574 * Some things should be done if attaching or re-allocating after a Diag 575 * Reset, but are not needed after a Diag Reset if the FW has not 576 * changed. 577 */ 578 if (attaching || reallocating) { 579 /* 580 * Check if controller supports FW diag buffers and set flag to 581 * enable each type. 582 */ 583 if (sc->facts->IOCCapabilities & 584 MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) 585 sc->fw_diag_buffer_list[MPI2_DIAG_BUF_TYPE_TRACE]. 586 enabled = TRUE; 587 if (sc->facts->IOCCapabilities & 588 MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) 589 sc->fw_diag_buffer_list[MPI2_DIAG_BUF_TYPE_SNAPSHOT]. 590 enabled = TRUE; 591 if (sc->facts->IOCCapabilities & 592 MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) 593 sc->fw_diag_buffer_list[MPI2_DIAG_BUF_TYPE_EXTENDED]. 594 enabled = TRUE; 595 596 /* 597 * Set flag if EEDP is supported and if TLR is supported. 598 */ 599 if (sc->facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) 600 sc->eedp_enabled = TRUE; 601 if (sc->facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) 602 sc->control_TLR = TRUE; 603 604 mps_resize_queues(sc); 605 606 /* 607 * Initialize all Tail Queues 608 */ 609 TAILQ_INIT(&sc->req_list); 610 TAILQ_INIT(&sc->high_priority_req_list); 611 TAILQ_INIT(&sc->chain_list); 612 TAILQ_INIT(&sc->tm_list); 613 } 614 615 /* 616 * If doing a Diag Reset and the FW is significantly different 617 * (reallocating will be set above in IOC Facts comparison), then all 618 * buffers based on the IOC Facts will need to be freed before they are 619 * reallocated. 620 */ 621 if (reallocating) { 622 mps_iocfacts_free(sc); 623 mpssas_realloc_targets(sc, saved_facts.MaxTargets + 624 saved_facts.MaxVolumes); 625 } 626 627 /* 628 * Any deallocation has been completed. Now start reallocating 629 * if needed. Will only need to reallocate if attaching or if the new 630 * IOC Facts are different from the previous IOC Facts after a Diag 631 * Reset. Targets have already been allocated above if needed. 632 */ 633 error = 0; 634 while (attaching || reallocating) { 635 if ((error = mps_alloc_hw_queues(sc)) != 0) 636 break; 637 if ((error = mps_alloc_replies(sc)) != 0) 638 break; 639 if ((error = mps_alloc_requests(sc)) != 0) 640 break; 641 if ((error = mps_alloc_queues(sc)) != 0) 642 break; 643 644 break; 645 } 646 if (error) { 647 mps_dprint(sc, MPS_INIT|MPS_FAULT, 648 "Failed to alloc queues with error %d\n", error); 649 mps_free(sc); 650 return (error); 651 } 652 653 /* Always initialize the queues */ 654 bzero(sc->free_queue, sc->fqdepth * 4); 655 mps_init_queues(sc); 656 657 /* 658 * Always get the chip out of the reset state, but only panic if not 659 * attaching. If attaching and there is an error, that is handled by 660 * the OS. 661 */ 662 error = mps_transition_operational(sc); 663 if (error != 0) { 664 mps_dprint(sc, MPS_INIT|MPS_FAULT, "Failed to " 665 "transition to operational with error %d\n", error); 666 mps_free(sc); 667 return (error); 668 } 669 670 /* 671 * Finish the queue initialization. 672 * These are set here instead of in mps_init_queues() because the 673 * IOC resets these values during the state transition in 674 * mps_transition_operational(). The free index is set to 1 675 * because the corresponding index in the IOC is set to 0, and the 676 * IOC treats the queues as full if both are set to the same value. 677 * Hence the reason that the queue can't hold all of the possible 678 * replies. 679 */ 680 sc->replypostindex = 0; 681 mps_regwrite(sc, MPI2_REPLY_FREE_HOST_INDEX_OFFSET, sc->replyfreeindex); 682 mps_regwrite(sc, MPI2_REPLY_POST_HOST_INDEX_OFFSET, 0); 683 684 /* 685 * Attach the subsystems so they can prepare their event masks. 686 * XXX Should be dynamic so that IM/IR and user modules can attach 687 */ 688 error = 0; 689 while (attaching) { 690 mps_dprint(sc, MPS_INIT, "Attaching subsystems\n"); 691 if ((error = mps_attach_log(sc)) != 0) 692 break; 693 if ((error = mps_attach_sas(sc)) != 0) 694 break; 695 if ((error = mps_attach_user(sc)) != 0) 696 break; 697 break; 698 } 699 if (error) { 700 mps_dprint(sc, MPS_INIT|MPS_FAULT, "Failed to attach all " 701 "subsystems: error %d\n", error); 702 mps_free(sc); 703 return (error); 704 } 705 706 /* 707 * XXX If the number of MSI-X vectors changes during re-init, this 708 * won't see it and adjust. 709 */ 710 if (attaching && (error = mps_pci_setup_interrupts(sc)) != 0) { 711 mps_dprint(sc, MPS_INIT|MPS_FAULT, "Failed to setup " 712 "interrupts\n"); 713 mps_free(sc); 714 return (error); 715 } 716 717 /* 718 * Set flag if this is a WD controller. This shouldn't ever change, but 719 * reset it after a Diag Reset, just in case. 720 */ 721 sc->WD_available = FALSE; 722 if (pci_get_device(sc->mps_dev) == MPI2_MFGPAGE_DEVID_SSS6200) 723 sc->WD_available = TRUE; 724 725 return (error); 726 } 727 728 /* 729 * This is called if memory is being free (during detach for example) and when 730 * buffers need to be reallocated due to a Diag Reset. 731 */ 732 static void 733 mps_iocfacts_free(struct mps_softc *sc) 734 { 735 struct mps_command *cm; 736 int i; 737 738 mps_dprint(sc, MPS_TRACE, "%s\n", __func__); 739 740 if (sc->free_busaddr != 0) 741 bus_dmamap_unload(sc->queues_dmat, sc->queues_map); 742 if (sc->free_queue != NULL) 743 bus_dmamem_free(sc->queues_dmat, sc->free_queue, 744 sc->queues_map); 745 if (sc->queues_dmat != NULL) 746 bus_dma_tag_destroy(sc->queues_dmat); 747 748 if (sc->chain_frames != NULL) { 749 bus_dmamap_unload(sc->chain_dmat, sc->chain_map); 750 bus_dmamem_free(sc->chain_dmat, sc->chain_frames, 751 sc->chain_map); 752 } 753 if (sc->chain_dmat != NULL) 754 bus_dma_tag_destroy(sc->chain_dmat); 755 756 if (sc->sense_busaddr != 0) 757 bus_dmamap_unload(sc->sense_dmat, sc->sense_map); 758 if (sc->sense_frames != NULL) 759 bus_dmamem_free(sc->sense_dmat, sc->sense_frames, 760 sc->sense_map); 761 if (sc->sense_dmat != NULL) 762 bus_dma_tag_destroy(sc->sense_dmat); 763 764 if (sc->reply_busaddr != 0) 765 bus_dmamap_unload(sc->reply_dmat, sc->reply_map); 766 if (sc->reply_frames != NULL) 767 bus_dmamem_free(sc->reply_dmat, sc->reply_frames, 768 sc->reply_map); 769 if (sc->reply_dmat != NULL) 770 bus_dma_tag_destroy(sc->reply_dmat); 771 772 if (sc->req_busaddr != 0) 773 bus_dmamap_unload(sc->req_dmat, sc->req_map); 774 if (sc->req_frames != NULL) 775 bus_dmamem_free(sc->req_dmat, sc->req_frames, sc->req_map); 776 if (sc->req_dmat != NULL) 777 bus_dma_tag_destroy(sc->req_dmat); 778 779 if (sc->chains != NULL) 780 free(sc->chains, M_MPT2); 781 if (sc->commands != NULL) { 782 for (i = 1; i < sc->num_reqs; i++) { 783 cm = &sc->commands[i]; 784 bus_dmamap_destroy(sc->buffer_dmat, cm->cm_dmamap); 785 } 786 free(sc->commands, M_MPT2); 787 } 788 if (sc->buffer_dmat != NULL) 789 bus_dma_tag_destroy(sc->buffer_dmat); 790 791 mps_pci_free_interrupts(sc); 792 free(sc->queues, M_MPT2); 793 sc->queues = NULL; 794 } 795 796 /* 797 * The terms diag reset and hard reset are used interchangeably in the MPI 798 * docs to mean resetting the controller chip. In this code diag reset 799 * cleans everything up, and the hard reset function just sends the reset 800 * sequence to the chip. This should probably be refactored so that every 801 * subsystem gets a reset notification of some sort, and can clean up 802 * appropriately. 803 */ 804 int 805 mps_reinit(struct mps_softc *sc) 806 { 807 int error; 808 struct mpssas_softc *sassc; 809 810 sassc = sc->sassc; 811 812 MPS_FUNCTRACE(sc); 813 814 mtx_assert(&sc->mps_mtx, MA_OWNED); 815 816 mps_dprint(sc, MPS_INIT|MPS_INFO, "Reinitializing controller\n"); 817 if (sc->mps_flags & MPS_FLAGS_DIAGRESET) { 818 mps_dprint(sc, MPS_INIT, "Reset already in progress\n"); 819 return 0; 820 } 821 822 /* make sure the completion callbacks can recognize they're getting 823 * a NULL cm_reply due to a reset. 824 */ 825 sc->mps_flags |= MPS_FLAGS_DIAGRESET; 826 827 /* 828 * Mask interrupts here. 829 */ 830 mps_dprint(sc, MPS_INIT, "masking interrupts and resetting\n"); 831 mps_mask_intr(sc); 832 833 error = mps_diag_reset(sc, CAN_SLEEP); 834 if (error != 0) { 835 /* XXXSL No need to panic here */ 836 panic("%s hard reset failed with error %d\n", 837 __func__, error); 838 } 839 840 /* Restore the PCI state, including the MSI-X registers */ 841 mps_pci_restore(sc); 842 843 /* Give the I/O subsystem special priority to get itself prepared */ 844 mpssas_handle_reinit(sc); 845 846 /* 847 * Get IOC Facts and allocate all structures based on this information. 848 * The attach function will also call mps_iocfacts_allocate at startup. 849 * If relevant values have changed in IOC Facts, this function will free 850 * all of the memory based on IOC Facts and reallocate that memory. 851 */ 852 if ((error = mps_iocfacts_allocate(sc, FALSE)) != 0) { 853 panic("%s IOC Facts based allocation failed with error %d\n", 854 __func__, error); 855 } 856 857 /* 858 * Mapping structures will be re-allocated after getting IOC Page8, so 859 * free these structures here. 860 */ 861 mps_mapping_exit(sc); 862 863 /* 864 * The static page function currently read is IOC Page8. Others can be 865 * added in future. It's possible that the values in IOC Page8 have 866 * changed after a Diag Reset due to user modification, so always read 867 * these. Interrupts are masked, so unmask them before getting config 868 * pages. 869 */ 870 mps_unmask_intr(sc); 871 sc->mps_flags &= ~MPS_FLAGS_DIAGRESET; 872 mps_base_static_config_pages(sc); 873 874 /* 875 * Some mapping info is based in IOC Page8 data, so re-initialize the 876 * mapping tables. 877 */ 878 mps_mapping_initialize(sc); 879 880 /* 881 * Restart will reload the event masks clobbered by the reset, and 882 * then enable the port. 883 */ 884 mps_reregister_events(sc); 885 886 /* the end of discovery will release the simq, so we're done. */ 887 mps_dprint(sc, MPS_INIT|MPS_XINFO, "Finished sc %p post %u free %u\n", 888 sc, sc->replypostindex, sc->replyfreeindex); 889 890 mpssas_release_simq_reinit(sassc); 891 mps_dprint(sc, MPS_INIT, "%s exit\n", __func__); 892 893 return 0; 894 } 895 896 /* Wait for the chip to ACK a word that we've put into its FIFO 897 * Wait for <timeout> seconds. In single loop wait for busy loop 898 * for 500 microseconds. 899 * Total is [ 0.5 * (2000 * <timeout>) ] in miliseconds. 900 * */ 901 static int 902 mps_wait_db_ack(struct mps_softc *sc, int timeout, int sleep_flag) 903 { 904 905 u32 cntdn, count; 906 u32 int_status; 907 u32 doorbell; 908 909 count = 0; 910 cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout; 911 do { 912 int_status = mps_regread(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET); 913 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) { 914 mps_dprint(sc, MPS_TRACE, 915 "%s: successful count(%d), timeout(%d)\n", 916 __func__, count, timeout); 917 return 0; 918 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) { 919 doorbell = mps_regread(sc, MPI2_DOORBELL_OFFSET); 920 if ((doorbell & MPI2_IOC_STATE_MASK) == 921 MPI2_IOC_STATE_FAULT) { 922 mps_dprint(sc, MPS_FAULT, 923 "fault_state(0x%04x)!\n", doorbell); 924 return (EFAULT); 925 } 926 } else if (int_status == 0xFFFFFFFF) 927 goto out; 928 929 /* If it can sleep, sleep for 1 milisecond, else busy loop for 930 * 0.5 milisecond */ 931 if (mtx_owned(&sc->mps_mtx) && sleep_flag == CAN_SLEEP) 932 msleep(&sc->msleep_fake_chan, &sc->mps_mtx, 0, 933 "mpsdba", hz/1000); 934 else if (sleep_flag == CAN_SLEEP) 935 pause("mpsdba", hz/1000); 936 else 937 DELAY(500); 938 count++; 939 } while (--cntdn); 940 941 out: 942 mps_dprint(sc, MPS_FAULT, "%s: failed due to timeout count(%d), " 943 "int_status(%x)!\n", __func__, count, int_status); 944 return (ETIMEDOUT); 945 946 } 947 948 /* Wait for the chip to signal that the next word in its FIFO can be fetched */ 949 static int 950 mps_wait_db_int(struct mps_softc *sc) 951 { 952 int retry; 953 954 for (retry = 0; retry < MPS_DB_MAX_WAIT; retry++) { 955 if ((mps_regread(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET) & 956 MPI2_HIS_IOC2SYS_DB_STATUS) != 0) 957 return (0); 958 DELAY(2000); 959 } 960 return (ETIMEDOUT); 961 } 962 963 /* Step through the synchronous command state machine, i.e. "Doorbell mode" */ 964 static int 965 mps_request_sync(struct mps_softc *sc, void *req, MPI2_DEFAULT_REPLY *reply, 966 int req_sz, int reply_sz, int timeout) 967 { 968 uint32_t *data32; 969 uint16_t *data16; 970 int i, count, ioc_sz, residual; 971 int sleep_flags = CAN_SLEEP; 972 973 if (curthread->td_no_sleeping != 0) 974 sleep_flags = NO_SLEEP; 975 976 /* Step 1 */ 977 mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0); 978 979 /* Step 2 */ 980 if (mps_regread(sc, MPI2_DOORBELL_OFFSET) & MPI2_DOORBELL_USED) 981 return (EBUSY); 982 983 /* Step 3 984 * Announce that a message is coming through the doorbell. Messages 985 * are pushed at 32bit words, so round up if needed. 986 */ 987 count = (req_sz + 3) / 4; 988 mps_regwrite(sc, MPI2_DOORBELL_OFFSET, 989 (MPI2_FUNCTION_HANDSHAKE << MPI2_DOORBELL_FUNCTION_SHIFT) | 990 (count << MPI2_DOORBELL_ADD_DWORDS_SHIFT)); 991 992 /* Step 4 */ 993 if (mps_wait_db_int(sc) || 994 (mps_regread(sc, MPI2_DOORBELL_OFFSET) & MPI2_DOORBELL_USED) == 0) { 995 mps_dprint(sc, MPS_FAULT, "Doorbell failed to activate\n"); 996 return (ENXIO); 997 } 998 mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0); 999 if (mps_wait_db_ack(sc, 5, sleep_flags) != 0) { 1000 mps_dprint(sc, MPS_FAULT, "Doorbell handshake failed\n"); 1001 return (ENXIO); 1002 } 1003 1004 /* Step 5 */ 1005 /* Clock out the message data synchronously in 32-bit dwords*/ 1006 data32 = (uint32_t *)req; 1007 for (i = 0; i < count; i++) { 1008 mps_regwrite(sc, MPI2_DOORBELL_OFFSET, htole32(data32[i])); 1009 if (mps_wait_db_ack(sc, 5, sleep_flags) != 0) { 1010 mps_dprint(sc, MPS_FAULT, 1011 "Timeout while writing doorbell\n"); 1012 return (ENXIO); 1013 } 1014 } 1015 1016 /* Step 6 */ 1017 /* Clock in the reply in 16-bit words. The total length of the 1018 * message is always in the 4th byte, so clock out the first 2 words 1019 * manually, then loop the rest. 1020 */ 1021 data16 = (uint16_t *)reply; 1022 if (mps_wait_db_int(sc) != 0) { 1023 mps_dprint(sc, MPS_FAULT, "Timeout reading doorbell 0\n"); 1024 return (ENXIO); 1025 } 1026 data16[0] = 1027 mps_regread(sc, MPI2_DOORBELL_OFFSET) & MPI2_DOORBELL_DATA_MASK; 1028 mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0); 1029 if (mps_wait_db_int(sc) != 0) { 1030 mps_dprint(sc, MPS_FAULT, "Timeout reading doorbell 1\n"); 1031 return (ENXIO); 1032 } 1033 data16[1] = 1034 mps_regread(sc, MPI2_DOORBELL_OFFSET) & MPI2_DOORBELL_DATA_MASK; 1035 mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0); 1036 1037 /* Number of 32bit words in the message */ 1038 ioc_sz = reply->MsgLength; 1039 1040 /* 1041 * Figure out how many 16bit words to clock in without overrunning. 1042 * The precision loss with dividing reply_sz can safely be 1043 * ignored because the messages can only be multiples of 32bits. 1044 */ 1045 residual = 0; 1046 count = MIN((reply_sz / 4), ioc_sz) * 2; 1047 if (count < ioc_sz * 2) { 1048 residual = ioc_sz * 2 - count; 1049 mps_dprint(sc, MPS_ERROR, "Driver error, throwing away %d " 1050 "residual message words\n", residual); 1051 } 1052 1053 for (i = 2; i < count; i++) { 1054 if (mps_wait_db_int(sc) != 0) { 1055 mps_dprint(sc, MPS_FAULT, 1056 "Timeout reading doorbell %d\n", i); 1057 return (ENXIO); 1058 } 1059 data16[i] = mps_regread(sc, MPI2_DOORBELL_OFFSET) & 1060 MPI2_DOORBELL_DATA_MASK; 1061 mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0); 1062 } 1063 1064 /* 1065 * Pull out residual words that won't fit into the provided buffer. 1066 * This keeps the chip from hanging due to a driver programming 1067 * error. 1068 */ 1069 while (residual--) { 1070 if (mps_wait_db_int(sc) != 0) { 1071 mps_dprint(sc, MPS_FAULT, 1072 "Timeout reading doorbell\n"); 1073 return (ENXIO); 1074 } 1075 (void)mps_regread(sc, MPI2_DOORBELL_OFFSET); 1076 mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0); 1077 } 1078 1079 /* Step 7 */ 1080 if (mps_wait_db_int(sc) != 0) { 1081 mps_dprint(sc, MPS_FAULT, "Timeout waiting to exit doorbell\n"); 1082 return (ENXIO); 1083 } 1084 if (mps_regread(sc, MPI2_DOORBELL_OFFSET) & MPI2_DOORBELL_USED) 1085 mps_dprint(sc, MPS_FAULT, "Warning, doorbell still active\n"); 1086 mps_regwrite(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET, 0x0); 1087 1088 return (0); 1089 } 1090 1091 static void 1092 mps_enqueue_request(struct mps_softc *sc, struct mps_command *cm) 1093 { 1094 reply_descriptor rd; 1095 MPS_FUNCTRACE(sc); 1096 mps_dprint(sc, MPS_TRACE, "SMID %u cm %p ccb %p\n", 1097 cm->cm_desc.Default.SMID, cm, cm->cm_ccb); 1098 1099 if (sc->mps_flags & MPS_FLAGS_ATTACH_DONE && !(sc->mps_flags & MPS_FLAGS_SHUTDOWN)) 1100 mtx_assert(&sc->mps_mtx, MA_OWNED); 1101 1102 if (++sc->io_cmds_active > sc->io_cmds_highwater) 1103 sc->io_cmds_highwater++; 1104 rd.u.low = cm->cm_desc.Words.Low; 1105 rd.u.high = cm->cm_desc.Words.High; 1106 rd.word = htole64(rd.word); 1107 1108 KASSERT(cm->cm_state == MPS_CM_STATE_BUSY, ("command not busy\n")); 1109 cm->cm_state = MPS_CM_STATE_INQUEUE; 1110 1111 /* TODO-We may need to make below regwrite atomic */ 1112 mps_regwrite(sc, MPI2_REQUEST_DESCRIPTOR_POST_LOW_OFFSET, 1113 rd.u.low); 1114 mps_regwrite(sc, MPI2_REQUEST_DESCRIPTOR_POST_HIGH_OFFSET, 1115 rd.u.high); 1116 } 1117 1118 /* 1119 * Just the FACTS, ma'am. 1120 */ 1121 static int 1122 mps_get_iocfacts(struct mps_softc *sc, MPI2_IOC_FACTS_REPLY *facts) 1123 { 1124 MPI2_DEFAULT_REPLY *reply; 1125 MPI2_IOC_FACTS_REQUEST request; 1126 int error, req_sz, reply_sz; 1127 1128 MPS_FUNCTRACE(sc); 1129 mps_dprint(sc, MPS_INIT, "%s entered\n", __func__); 1130 1131 req_sz = sizeof(MPI2_IOC_FACTS_REQUEST); 1132 reply_sz = sizeof(MPI2_IOC_FACTS_REPLY); 1133 reply = (MPI2_DEFAULT_REPLY *)facts; 1134 1135 bzero(&request, req_sz); 1136 request.Function = MPI2_FUNCTION_IOC_FACTS; 1137 error = mps_request_sync(sc, &request, reply, req_sz, reply_sz, 5); 1138 mps_dprint(sc, MPS_INIT, "%s exit error= %d\n", __func__, error); 1139 1140 return (error); 1141 } 1142 1143 static int 1144 mps_send_iocinit(struct mps_softc *sc) 1145 { 1146 MPI2_IOC_INIT_REQUEST init; 1147 MPI2_DEFAULT_REPLY reply; 1148 int req_sz, reply_sz, error; 1149 struct timeval now; 1150 uint64_t time_in_msec; 1151 1152 MPS_FUNCTRACE(sc); 1153 mps_dprint(sc, MPS_INIT, "%s entered\n", __func__); 1154 1155 /* Do a quick sanity check on proper initialization */ 1156 if ((sc->pqdepth == 0) || (sc->fqdepth == 0) || (sc->reqframesz == 0) 1157 || (sc->replyframesz == 0)) { 1158 mps_dprint(sc, MPS_INIT|MPS_ERROR, 1159 "Driver not fully initialized for IOCInit\n"); 1160 return (EINVAL); 1161 } 1162 1163 req_sz = sizeof(MPI2_IOC_INIT_REQUEST); 1164 reply_sz = sizeof(MPI2_IOC_INIT_REPLY); 1165 bzero(&init, req_sz); 1166 bzero(&reply, reply_sz); 1167 1168 /* 1169 * Fill in the init block. Note that most addresses are 1170 * deliberately in the lower 32bits of memory. This is a micro- 1171 * optimzation for PCI/PCIX, though it's not clear if it helps PCIe. 1172 */ 1173 init.Function = MPI2_FUNCTION_IOC_INIT; 1174 init.WhoInit = MPI2_WHOINIT_HOST_DRIVER; 1175 init.MsgVersion = htole16(MPI2_VERSION); 1176 init.HeaderVersion = htole16(MPI2_HEADER_VERSION); 1177 init.SystemRequestFrameSize = htole16((uint16_t)(sc->reqframesz / 4)); 1178 init.ReplyDescriptorPostQueueDepth = htole16(sc->pqdepth); 1179 init.ReplyFreeQueueDepth = htole16(sc->fqdepth); 1180 init.SenseBufferAddressHigh = 0; 1181 init.SystemReplyAddressHigh = 0; 1182 init.SystemRequestFrameBaseAddress.High = 0; 1183 init.SystemRequestFrameBaseAddress.Low = htole32((uint32_t)sc->req_busaddr); 1184 init.ReplyDescriptorPostQueueAddress.High = 0; 1185 init.ReplyDescriptorPostQueueAddress.Low = htole32((uint32_t)sc->post_busaddr); 1186 init.ReplyFreeQueueAddress.High = 0; 1187 init.ReplyFreeQueueAddress.Low = htole32((uint32_t)sc->free_busaddr); 1188 getmicrotime(&now); 1189 time_in_msec = (now.tv_sec * 1000 + now.tv_usec/1000); 1190 init.TimeStamp.High = htole32((time_in_msec >> 32) & 0xFFFFFFFF); 1191 init.TimeStamp.Low = htole32(time_in_msec & 0xFFFFFFFF); 1192 1193 error = mps_request_sync(sc, &init, &reply, req_sz, reply_sz, 5); 1194 if ((reply.IOCStatus & MPI2_IOCSTATUS_MASK) != MPI2_IOCSTATUS_SUCCESS) 1195 error = ENXIO; 1196 1197 mps_dprint(sc, MPS_INIT, "IOCInit status= 0x%x\n", reply.IOCStatus); 1198 mps_dprint(sc, MPS_INIT, "%s exit\n", __func__); 1199 return (error); 1200 } 1201 1202 void 1203 mps_memaddr_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 1204 { 1205 bus_addr_t *addr; 1206 1207 addr = arg; 1208 *addr = segs[0].ds_addr; 1209 } 1210 1211 void 1212 mps_memaddr_wait_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 1213 { 1214 struct mps_busdma_context *ctx; 1215 int need_unload, need_free; 1216 1217 ctx = (struct mps_busdma_context *)arg; 1218 need_unload = 0; 1219 need_free = 0; 1220 1221 mps_lock(ctx->softc); 1222 ctx->error = error; 1223 ctx->completed = 1; 1224 if ((error == 0) && (ctx->abandoned == 0)) { 1225 *ctx->addr = segs[0].ds_addr; 1226 } else { 1227 if (nsegs != 0) 1228 need_unload = 1; 1229 if (ctx->abandoned != 0) 1230 need_free = 1; 1231 } 1232 if (need_free == 0) 1233 wakeup(ctx); 1234 1235 mps_unlock(ctx->softc); 1236 1237 if (need_unload != 0) { 1238 bus_dmamap_unload(ctx->buffer_dmat, 1239 ctx->buffer_dmamap); 1240 *ctx->addr = 0; 1241 } 1242 1243 if (need_free != 0) 1244 free(ctx, M_MPSUSER); 1245 } 1246 1247 static int 1248 mps_alloc_queues(struct mps_softc *sc) 1249 { 1250 struct mps_queue *q; 1251 u_int nq, i; 1252 1253 nq = sc->msi_msgs; 1254 mps_dprint(sc, MPS_INIT|MPS_XINFO, "Allocating %d I/O queues\n", nq); 1255 1256 sc->queues = malloc(sizeof(struct mps_queue) * nq, M_MPT2, 1257 M_NOWAIT|M_ZERO); 1258 if (sc->queues == NULL) 1259 return (ENOMEM); 1260 1261 for (i = 0; i < nq; i++) { 1262 q = &sc->queues[i]; 1263 mps_dprint(sc, MPS_INIT, "Configuring queue %d %p\n", i, q); 1264 q->sc = sc; 1265 q->qnum = i; 1266 } 1267 1268 return (0); 1269 } 1270 1271 static int 1272 mps_alloc_hw_queues(struct mps_softc *sc) 1273 { 1274 bus_addr_t queues_busaddr; 1275 uint8_t *queues; 1276 int qsize, fqsize, pqsize; 1277 1278 /* 1279 * The reply free queue contains 4 byte entries in multiples of 16 and 1280 * aligned on a 16 byte boundary. There must always be an unused entry. 1281 * This queue supplies fresh reply frames for the firmware to use. 1282 * 1283 * The reply descriptor post queue contains 8 byte entries in 1284 * multiples of 16 and aligned on a 16 byte boundary. This queue 1285 * contains filled-in reply frames sent from the firmware to the host. 1286 * 1287 * These two queues are allocated together for simplicity. 1288 */ 1289 sc->fqdepth = roundup2(sc->num_replies + 1, 16); 1290 sc->pqdepth = roundup2(sc->num_replies + 1, 16); 1291 fqsize= sc->fqdepth * 4; 1292 pqsize = sc->pqdepth * 8; 1293 qsize = fqsize + pqsize; 1294 1295 if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */ 1296 16, 0, /* algnmnt, boundary */ 1297 BUS_SPACE_MAXADDR_32BIT,/* lowaddr */ 1298 BUS_SPACE_MAXADDR, /* highaddr */ 1299 NULL, NULL, /* filter, filterarg */ 1300 qsize, /* maxsize */ 1301 1, /* nsegments */ 1302 qsize, /* maxsegsize */ 1303 0, /* flags */ 1304 NULL, NULL, /* lockfunc, lockarg */ 1305 &sc->queues_dmat)) { 1306 mps_dprint(sc, MPS_ERROR, "Cannot allocate queues DMA tag\n"); 1307 return (ENOMEM); 1308 } 1309 if (bus_dmamem_alloc(sc->queues_dmat, (void **)&queues, BUS_DMA_NOWAIT, 1310 &sc->queues_map)) { 1311 mps_dprint(sc, MPS_ERROR, "Cannot allocate queues memory\n"); 1312 return (ENOMEM); 1313 } 1314 bzero(queues, qsize); 1315 bus_dmamap_load(sc->queues_dmat, sc->queues_map, queues, qsize, 1316 mps_memaddr_cb, &queues_busaddr, 0); 1317 1318 sc->free_queue = (uint32_t *)queues; 1319 sc->free_busaddr = queues_busaddr; 1320 sc->post_queue = (MPI2_REPLY_DESCRIPTORS_UNION *)(queues + fqsize); 1321 sc->post_busaddr = queues_busaddr + fqsize; 1322 mps_dprint(sc, MPS_INIT, "free queue busaddr= %#016jx size= %d\n", 1323 (uintmax_t)sc->free_busaddr, fqsize); 1324 mps_dprint(sc, MPS_INIT, "reply queue busaddr= %#016jx size= %d\n", 1325 (uintmax_t)sc->post_busaddr, pqsize); 1326 1327 return (0); 1328 } 1329 1330 static int 1331 mps_alloc_replies(struct mps_softc *sc) 1332 { 1333 int rsize, num_replies; 1334 1335 /* Store the reply frame size in bytes rather than as 32bit words */ 1336 sc->replyframesz = sc->facts->ReplyFrameSize * 4; 1337 1338 /* 1339 * sc->num_replies should be one less than sc->fqdepth. We need to 1340 * allocate space for sc->fqdepth replies, but only sc->num_replies 1341 * replies can be used at once. 1342 */ 1343 num_replies = max(sc->fqdepth, sc->num_replies); 1344 1345 rsize = sc->replyframesz * num_replies; 1346 if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */ 1347 4, 0, /* algnmnt, boundary */ 1348 BUS_SPACE_MAXADDR_32BIT,/* lowaddr */ 1349 BUS_SPACE_MAXADDR, /* highaddr */ 1350 NULL, NULL, /* filter, filterarg */ 1351 rsize, /* maxsize */ 1352 1, /* nsegments */ 1353 rsize, /* maxsegsize */ 1354 0, /* flags */ 1355 NULL, NULL, /* lockfunc, lockarg */ 1356 &sc->reply_dmat)) { 1357 mps_dprint(sc, MPS_ERROR, "Cannot allocate replies DMA tag\n"); 1358 return (ENOMEM); 1359 } 1360 if (bus_dmamem_alloc(sc->reply_dmat, (void **)&sc->reply_frames, 1361 BUS_DMA_NOWAIT, &sc->reply_map)) { 1362 mps_dprint(sc, MPS_ERROR, "Cannot allocate replies memory\n"); 1363 return (ENOMEM); 1364 } 1365 bzero(sc->reply_frames, rsize); 1366 bus_dmamap_load(sc->reply_dmat, sc->reply_map, sc->reply_frames, rsize, 1367 mps_memaddr_cb, &sc->reply_busaddr, 0); 1368 1369 mps_dprint(sc, MPS_INIT, "reply frames busaddr= %#016jx size= %d\n", 1370 (uintmax_t)sc->reply_busaddr, rsize); 1371 1372 return (0); 1373 } 1374 1375 static void 1376 mps_load_chains_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 1377 { 1378 struct mps_softc *sc = arg; 1379 struct mps_chain *chain; 1380 bus_size_t bo; 1381 int i, o, s; 1382 1383 if (error != 0) 1384 return; 1385 1386 for (i = 0, o = 0, s = 0; s < nsegs; s++) { 1387 for (bo = 0; bo + sc->reqframesz <= segs[s].ds_len; 1388 bo += sc->reqframesz) { 1389 chain = &sc->chains[i++]; 1390 chain->chain =(MPI2_SGE_IO_UNION *)(sc->chain_frames+o); 1391 chain->chain_busaddr = segs[s].ds_addr + bo; 1392 o += sc->reqframesz; 1393 mps_free_chain(sc, chain); 1394 } 1395 if (bo != segs[s].ds_len) 1396 o += segs[s].ds_len - bo; 1397 } 1398 sc->chain_free_lowwater = i; 1399 } 1400 1401 static int 1402 mps_alloc_requests(struct mps_softc *sc) 1403 { 1404 struct mps_command *cm; 1405 int i, rsize, nsegs; 1406 1407 rsize = sc->reqframesz * sc->num_reqs; 1408 if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */ 1409 16, 0, /* algnmnt, boundary */ 1410 BUS_SPACE_MAXADDR_32BIT,/* lowaddr */ 1411 BUS_SPACE_MAXADDR, /* highaddr */ 1412 NULL, NULL, /* filter, filterarg */ 1413 rsize, /* maxsize */ 1414 1, /* nsegments */ 1415 rsize, /* maxsegsize */ 1416 0, /* flags */ 1417 NULL, NULL, /* lockfunc, lockarg */ 1418 &sc->req_dmat)) { 1419 mps_dprint(sc, MPS_ERROR, "Cannot allocate request DMA tag\n"); 1420 return (ENOMEM); 1421 } 1422 if (bus_dmamem_alloc(sc->req_dmat, (void **)&sc->req_frames, 1423 BUS_DMA_NOWAIT, &sc->req_map)) { 1424 mps_dprint(sc, MPS_ERROR, "Cannot allocate request memory\n"); 1425 return (ENOMEM); 1426 } 1427 bzero(sc->req_frames, rsize); 1428 bus_dmamap_load(sc->req_dmat, sc->req_map, sc->req_frames, rsize, 1429 mps_memaddr_cb, &sc->req_busaddr, 0); 1430 mps_dprint(sc, MPS_INIT, "request frames busaddr= %#016jx size= %d\n", 1431 (uintmax_t)sc->req_busaddr, rsize); 1432 1433 sc->chains = malloc(sizeof(struct mps_chain) * sc->num_chains, M_MPT2, 1434 M_NOWAIT | M_ZERO); 1435 if (!sc->chains) { 1436 mps_dprint(sc, MPS_ERROR, "Cannot allocate chain memory\n"); 1437 return (ENOMEM); 1438 } 1439 rsize = sc->reqframesz * sc->num_chains; 1440 if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */ 1441 16, 0, /* algnmnt, boundary */ 1442 BUS_SPACE_MAXADDR_32BIT,/* lowaddr */ 1443 BUS_SPACE_MAXADDR, /* highaddr */ 1444 NULL, NULL, /* filter, filterarg */ 1445 rsize, /* maxsize */ 1446 howmany(rsize, PAGE_SIZE), /* nsegments */ 1447 rsize, /* maxsegsize */ 1448 0, /* flags */ 1449 NULL, NULL, /* lockfunc, lockarg */ 1450 &sc->chain_dmat)) { 1451 mps_dprint(sc, MPS_ERROR, "Cannot allocate chain DMA tag\n"); 1452 return (ENOMEM); 1453 } 1454 if (bus_dmamem_alloc(sc->chain_dmat, (void **)&sc->chain_frames, 1455 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->chain_map)) { 1456 mps_dprint(sc, MPS_ERROR, "Cannot allocate chain memory\n"); 1457 return (ENOMEM); 1458 } 1459 if (bus_dmamap_load(sc->chain_dmat, sc->chain_map, sc->chain_frames, 1460 rsize, mps_load_chains_cb, sc, BUS_DMA_NOWAIT)) { 1461 mps_dprint(sc, MPS_ERROR, "Cannot load chain memory\n"); 1462 bus_dmamem_free(sc->chain_dmat, sc->chain_frames, 1463 sc->chain_map); 1464 return (ENOMEM); 1465 } 1466 1467 rsize = MPS_SENSE_LEN * sc->num_reqs; 1468 if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */ 1469 1, 0, /* algnmnt, boundary */ 1470 BUS_SPACE_MAXADDR_32BIT,/* lowaddr */ 1471 BUS_SPACE_MAXADDR, /* highaddr */ 1472 NULL, NULL, /* filter, filterarg */ 1473 rsize, /* maxsize */ 1474 1, /* nsegments */ 1475 rsize, /* maxsegsize */ 1476 0, /* flags */ 1477 NULL, NULL, /* lockfunc, lockarg */ 1478 &sc->sense_dmat)) { 1479 mps_dprint(sc, MPS_ERROR, "Cannot allocate sense DMA tag\n"); 1480 return (ENOMEM); 1481 } 1482 if (bus_dmamem_alloc(sc->sense_dmat, (void **)&sc->sense_frames, 1483 BUS_DMA_NOWAIT, &sc->sense_map)) { 1484 mps_dprint(sc, MPS_ERROR, "Cannot allocate sense memory\n"); 1485 return (ENOMEM); 1486 } 1487 bzero(sc->sense_frames, rsize); 1488 bus_dmamap_load(sc->sense_dmat, sc->sense_map, sc->sense_frames, rsize, 1489 mps_memaddr_cb, &sc->sense_busaddr, 0); 1490 mps_dprint(sc, MPS_INIT, "sense frames busaddr= %#016jx size= %d\n", 1491 (uintmax_t)sc->sense_busaddr, rsize); 1492 1493 nsegs = (sc->maxio / PAGE_SIZE) + 1; 1494 if (bus_dma_tag_create( sc->mps_parent_dmat, /* parent */ 1495 1, 0, /* algnmnt, boundary */ 1496 BUS_SPACE_MAXADDR, /* lowaddr */ 1497 BUS_SPACE_MAXADDR, /* highaddr */ 1498 NULL, NULL, /* filter, filterarg */ 1499 BUS_SPACE_MAXSIZE_32BIT,/* maxsize */ 1500 nsegs, /* nsegments */ 1501 BUS_SPACE_MAXSIZE_24BIT,/* maxsegsize */ 1502 BUS_DMA_ALLOCNOW, /* flags */ 1503 busdma_lock_mutex, /* lockfunc */ 1504 &sc->mps_mtx, /* lockarg */ 1505 &sc->buffer_dmat)) { 1506 mps_dprint(sc, MPS_ERROR, "Cannot allocate buffer DMA tag\n"); 1507 return (ENOMEM); 1508 } 1509 1510 /* 1511 * SMID 0 cannot be used as a free command per the firmware spec. 1512 * Just drop that command instead of risking accounting bugs. 1513 */ 1514 sc->commands = malloc(sizeof(struct mps_command) * sc->num_reqs, 1515 M_MPT2, M_WAITOK | M_ZERO); 1516 if(!sc->commands) { 1517 mps_dprint(sc, MPS_ERROR, "Cannot allocate command memory\n"); 1518 return (ENOMEM); 1519 } 1520 for (i = 1; i < sc->num_reqs; i++) { 1521 cm = &sc->commands[i]; 1522 cm->cm_req = sc->req_frames + i * sc->reqframesz; 1523 cm->cm_req_busaddr = sc->req_busaddr + i * sc->reqframesz; 1524 cm->cm_sense = &sc->sense_frames[i]; 1525 cm->cm_sense_busaddr = sc->sense_busaddr + i * MPS_SENSE_LEN; 1526 cm->cm_desc.Default.SMID = i; 1527 cm->cm_sc = sc; 1528 cm->cm_state = MPS_CM_STATE_BUSY; 1529 TAILQ_INIT(&cm->cm_chain_list); 1530 callout_init_mtx(&cm->cm_callout, &sc->mps_mtx, 0); 1531 1532 /* XXX Is a failure here a critical problem? */ 1533 if (bus_dmamap_create(sc->buffer_dmat, 0, &cm->cm_dmamap) == 0) 1534 if (i <= sc->num_prireqs) 1535 mps_free_high_priority_command(sc, cm); 1536 else 1537 mps_free_command(sc, cm); 1538 else { 1539 panic("failed to allocate command %d\n", i); 1540 sc->num_reqs = i; 1541 break; 1542 } 1543 } 1544 1545 return (0); 1546 } 1547 1548 static int 1549 mps_init_queues(struct mps_softc *sc) 1550 { 1551 int i; 1552 1553 memset((uint8_t *)sc->post_queue, 0xff, sc->pqdepth * 8); 1554 1555 /* 1556 * According to the spec, we need to use one less reply than we 1557 * have space for on the queue. So sc->num_replies (the number we 1558 * use) should be less than sc->fqdepth (allocated size). 1559 */ 1560 if (sc->num_replies >= sc->fqdepth) 1561 return (EINVAL); 1562 1563 /* 1564 * Initialize all of the free queue entries. 1565 */ 1566 for (i = 0; i < sc->fqdepth; i++) 1567 sc->free_queue[i] = sc->reply_busaddr + (i * sc->replyframesz); 1568 sc->replyfreeindex = sc->num_replies; 1569 1570 return (0); 1571 } 1572 1573 /* Get the driver parameter tunables. Lowest priority are the driver defaults. 1574 * Next are the global settings, if they exist. Highest are the per-unit 1575 * settings, if they exist. 1576 */ 1577 void 1578 mps_get_tunables(struct mps_softc *sc) 1579 { 1580 char tmpstr[80], mps_debug[80]; 1581 1582 /* XXX default to some debugging for now */ 1583 sc->mps_debug = MPS_INFO|MPS_FAULT; 1584 sc->disable_msix = 0; 1585 sc->disable_msi = 0; 1586 sc->max_msix = MPS_MSIX_MAX; 1587 sc->max_chains = MPS_CHAIN_FRAMES; 1588 sc->max_io_pages = MPS_MAXIO_PAGES; 1589 sc->enable_ssu = MPS_SSU_ENABLE_SSD_DISABLE_HDD; 1590 sc->spinup_wait_time = DEFAULT_SPINUP_WAIT; 1591 sc->use_phynum = 1; 1592 sc->max_reqframes = MPS_REQ_FRAMES; 1593 sc->max_prireqframes = MPS_PRI_REQ_FRAMES; 1594 sc->max_replyframes = MPS_REPLY_FRAMES; 1595 sc->max_evtframes = MPS_EVT_REPLY_FRAMES; 1596 1597 /* 1598 * Grab the global variables. 1599 */ 1600 bzero(mps_debug, 80); 1601 if (TUNABLE_STR_FETCH("hw.mps.debug_level", mps_debug, 80) != 0) 1602 mps_parse_debug(sc, mps_debug); 1603 TUNABLE_INT_FETCH("hw.mps.disable_msix", &sc->disable_msix); 1604 TUNABLE_INT_FETCH("hw.mps.disable_msi", &sc->disable_msi); 1605 TUNABLE_INT_FETCH("hw.mps.max_msix", &sc->max_msix); 1606 TUNABLE_INT_FETCH("hw.mps.max_chains", &sc->max_chains); 1607 TUNABLE_INT_FETCH("hw.mps.max_io_pages", &sc->max_io_pages); 1608 TUNABLE_INT_FETCH("hw.mps.enable_ssu", &sc->enable_ssu); 1609 TUNABLE_INT_FETCH("hw.mps.spinup_wait_time", &sc->spinup_wait_time); 1610 TUNABLE_INT_FETCH("hw.mps.use_phy_num", &sc->use_phynum); 1611 TUNABLE_INT_FETCH("hw.mps.max_reqframes", &sc->max_reqframes); 1612 TUNABLE_INT_FETCH("hw.mps.max_prireqframes", &sc->max_prireqframes); 1613 TUNABLE_INT_FETCH("hw.mps.max_replyframes", &sc->max_replyframes); 1614 TUNABLE_INT_FETCH("hw.mps.max_evtframes", &sc->max_evtframes); 1615 1616 /* Grab the unit-instance variables */ 1617 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.debug_level", 1618 device_get_unit(sc->mps_dev)); 1619 bzero(mps_debug, 80); 1620 if (TUNABLE_STR_FETCH(tmpstr, mps_debug, 80) != 0) 1621 mps_parse_debug(sc, mps_debug); 1622 1623 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.disable_msix", 1624 device_get_unit(sc->mps_dev)); 1625 TUNABLE_INT_FETCH(tmpstr, &sc->disable_msix); 1626 1627 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.disable_msi", 1628 device_get_unit(sc->mps_dev)); 1629 TUNABLE_INT_FETCH(tmpstr, &sc->disable_msi); 1630 1631 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.max_msix", 1632 device_get_unit(sc->mps_dev)); 1633 TUNABLE_INT_FETCH(tmpstr, &sc->max_msix); 1634 1635 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.max_chains", 1636 device_get_unit(sc->mps_dev)); 1637 TUNABLE_INT_FETCH(tmpstr, &sc->max_chains); 1638 1639 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.max_io_pages", 1640 device_get_unit(sc->mps_dev)); 1641 TUNABLE_INT_FETCH(tmpstr, &sc->max_io_pages); 1642 1643 bzero(sc->exclude_ids, sizeof(sc->exclude_ids)); 1644 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.exclude_ids", 1645 device_get_unit(sc->mps_dev)); 1646 TUNABLE_STR_FETCH(tmpstr, sc->exclude_ids, sizeof(sc->exclude_ids)); 1647 1648 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.enable_ssu", 1649 device_get_unit(sc->mps_dev)); 1650 TUNABLE_INT_FETCH(tmpstr, &sc->enable_ssu); 1651 1652 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.spinup_wait_time", 1653 device_get_unit(sc->mps_dev)); 1654 TUNABLE_INT_FETCH(tmpstr, &sc->spinup_wait_time); 1655 1656 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.use_phy_num", 1657 device_get_unit(sc->mps_dev)); 1658 TUNABLE_INT_FETCH(tmpstr, &sc->use_phynum); 1659 1660 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.max_reqframes", 1661 device_get_unit(sc->mps_dev)); 1662 TUNABLE_INT_FETCH(tmpstr, &sc->max_reqframes); 1663 1664 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.max_prireqframes", 1665 device_get_unit(sc->mps_dev)); 1666 TUNABLE_INT_FETCH(tmpstr, &sc->max_prireqframes); 1667 1668 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.max_replyframes", 1669 device_get_unit(sc->mps_dev)); 1670 TUNABLE_INT_FETCH(tmpstr, &sc->max_replyframes); 1671 1672 snprintf(tmpstr, sizeof(tmpstr), "dev.mps.%d.max_evtframes", 1673 device_get_unit(sc->mps_dev)); 1674 TUNABLE_INT_FETCH(tmpstr, &sc->max_evtframes); 1675 1676 } 1677 1678 static void 1679 mps_setup_sysctl(struct mps_softc *sc) 1680 { 1681 struct sysctl_ctx_list *sysctl_ctx = NULL; 1682 struct sysctl_oid *sysctl_tree = NULL; 1683 char tmpstr[80], tmpstr2[80]; 1684 1685 /* 1686 * Setup the sysctl variable so the user can change the debug level 1687 * on the fly. 1688 */ 1689 snprintf(tmpstr, sizeof(tmpstr), "MPS controller %d", 1690 device_get_unit(sc->mps_dev)); 1691 snprintf(tmpstr2, sizeof(tmpstr2), "%d", device_get_unit(sc->mps_dev)); 1692 1693 sysctl_ctx = device_get_sysctl_ctx(sc->mps_dev); 1694 if (sysctl_ctx != NULL) 1695 sysctl_tree = device_get_sysctl_tree(sc->mps_dev); 1696 1697 if (sysctl_tree == NULL) { 1698 sysctl_ctx_init(&sc->sysctl_ctx); 1699 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx, 1700 SYSCTL_STATIC_CHILDREN(_hw_mps), OID_AUTO, tmpstr2, 1701 CTLFLAG_RD, 0, tmpstr); 1702 if (sc->sysctl_tree == NULL) 1703 return; 1704 sysctl_ctx = &sc->sysctl_ctx; 1705 sysctl_tree = sc->sysctl_tree; 1706 } 1707 1708 SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1709 OID_AUTO, "debug_level", CTLTYPE_STRING | CTLFLAG_RW |CTLFLAG_MPSAFE, 1710 sc, 0, mps_debug_sysctl, "A", "mps debug level"); 1711 1712 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1713 OID_AUTO, "disable_msix", CTLFLAG_RD, &sc->disable_msix, 0, 1714 "Disable the use of MSI-X interrupts"); 1715 1716 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1717 OID_AUTO, "disable_msi", CTLFLAG_RD, &sc->disable_msi, 0, 1718 "Disable the use of MSI interrupts"); 1719 1720 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1721 OID_AUTO, "max_msix", CTLFLAG_RD, &sc->max_msix, 0, 1722 "User-defined maximum number of MSIX queues"); 1723 1724 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1725 OID_AUTO, "msix_msgs", CTLFLAG_RD, &sc->msi_msgs, 0, 1726 "Negotiated number of MSIX queues"); 1727 1728 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1729 OID_AUTO, "max_reqframes", CTLFLAG_RD, &sc->max_reqframes, 0, 1730 "Total number of allocated request frames"); 1731 1732 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1733 OID_AUTO, "max_prireqframes", CTLFLAG_RD, &sc->max_prireqframes, 0, 1734 "Total number of allocated high priority request frames"); 1735 1736 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1737 OID_AUTO, "max_replyframes", CTLFLAG_RD, &sc->max_replyframes, 0, 1738 "Total number of allocated reply frames"); 1739 1740 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1741 OID_AUTO, "max_evtframes", CTLFLAG_RD, &sc->max_evtframes, 0, 1742 "Total number of event frames allocated"); 1743 1744 SYSCTL_ADD_STRING(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1745 OID_AUTO, "firmware_version", CTLFLAG_RW, sc->fw_version, 1746 strlen(sc->fw_version), "firmware version"); 1747 1748 SYSCTL_ADD_STRING(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1749 OID_AUTO, "driver_version", CTLFLAG_RW, MPS_DRIVER_VERSION, 1750 strlen(MPS_DRIVER_VERSION), "driver version"); 1751 1752 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1753 OID_AUTO, "io_cmds_active", CTLFLAG_RD, 1754 &sc->io_cmds_active, 0, "number of currently active commands"); 1755 1756 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1757 OID_AUTO, "io_cmds_highwater", CTLFLAG_RD, 1758 &sc->io_cmds_highwater, 0, "maximum active commands seen"); 1759 1760 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1761 OID_AUTO, "chain_free", CTLFLAG_RD, 1762 &sc->chain_free, 0, "number of free chain elements"); 1763 1764 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1765 OID_AUTO, "chain_free_lowwater", CTLFLAG_RD, 1766 &sc->chain_free_lowwater, 0,"lowest number of free chain elements"); 1767 1768 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1769 OID_AUTO, "max_chains", CTLFLAG_RD, 1770 &sc->max_chains, 0,"maximum chain frames that will be allocated"); 1771 1772 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1773 OID_AUTO, "max_io_pages", CTLFLAG_RD, 1774 &sc->max_io_pages, 0,"maximum pages to allow per I/O (if <1 use " 1775 "IOCFacts)"); 1776 1777 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1778 OID_AUTO, "enable_ssu", CTLFLAG_RW, &sc->enable_ssu, 0, 1779 "enable SSU to SATA SSD/HDD at shutdown"); 1780 1781 SYSCTL_ADD_UQUAD(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1782 OID_AUTO, "chain_alloc_fail", CTLFLAG_RD, 1783 &sc->chain_alloc_fail, "chain allocation failures"); 1784 1785 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1786 OID_AUTO, "spinup_wait_time", CTLFLAG_RD, 1787 &sc->spinup_wait_time, DEFAULT_SPINUP_WAIT, "seconds to wait for " 1788 "spinup after SATA ID error"); 1789 1790 SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1791 OID_AUTO, "mapping_table_dump", CTLTYPE_STRING | CTLFLAG_RD, sc, 0, 1792 mps_mapping_dump, "A", "Mapping Table Dump"); 1793 1794 SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1795 OID_AUTO, "encl_table_dump", CTLTYPE_STRING | CTLFLAG_RD, sc, 0, 1796 mps_mapping_encl_dump, "A", "Enclosure Table Dump"); 1797 1798 SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1799 OID_AUTO, "dump_reqs", CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_SKIP, sc, 0, 1800 mps_dump_reqs, "I", "Dump Active Requests"); 1801 1802 SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), 1803 OID_AUTO, "use_phy_num", CTLFLAG_RD, &sc->use_phynum, 0, 1804 "Use the phy number for enumeration"); 1805 } 1806 1807 static struct mps_debug_string { 1808 char *name; 1809 int flag; 1810 } mps_debug_strings[] = { 1811 {"info", MPS_INFO}, 1812 {"fault", MPS_FAULT}, 1813 {"event", MPS_EVENT}, 1814 {"log", MPS_LOG}, 1815 {"recovery", MPS_RECOVERY}, 1816 {"error", MPS_ERROR}, 1817 {"init", MPS_INIT}, 1818 {"xinfo", MPS_XINFO}, 1819 {"user", MPS_USER}, 1820 {"mapping", MPS_MAPPING}, 1821 {"trace", MPS_TRACE} 1822 }; 1823 1824 enum mps_debug_level_combiner { 1825 COMB_NONE, 1826 COMB_ADD, 1827 COMB_SUB 1828 }; 1829 1830 static int 1831 mps_debug_sysctl(SYSCTL_HANDLER_ARGS) 1832 { 1833 struct mps_softc *sc; 1834 struct mps_debug_string *string; 1835 struct sbuf *sbuf; 1836 char *buffer; 1837 size_t sz; 1838 int i, len, debug, error; 1839 1840 sc = (struct mps_softc *)arg1; 1841 1842 error = sysctl_wire_old_buffer(req, 0); 1843 if (error != 0) 1844 return (error); 1845 1846 sbuf = sbuf_new_for_sysctl(NULL, NULL, 128, req); 1847 debug = sc->mps_debug; 1848 1849 sbuf_printf(sbuf, "%#x", debug); 1850 1851 sz = sizeof(mps_debug_strings) / sizeof(mps_debug_strings[0]); 1852 for (i = 0; i < sz; i++) { 1853 string = &mps_debug_strings[i]; 1854 if (debug & string->flag) 1855 sbuf_printf(sbuf, ",%s", string->name); 1856 } 1857 1858 error = sbuf_finish(sbuf); 1859 sbuf_delete(sbuf); 1860 1861 if (error || req->newptr == NULL) 1862 return (error); 1863 1864 len = req->newlen - req->newidx; 1865 if (len == 0) 1866 return (0); 1867 1868 buffer = malloc(len, M_MPT2, M_ZERO|M_WAITOK); 1869 error = SYSCTL_IN(req, buffer, len); 1870 1871 mps_parse_debug(sc, buffer); 1872 1873 free(buffer, M_MPT2); 1874 return (error); 1875 } 1876 1877 static void 1878 mps_parse_debug(struct mps_softc *sc, char *list) 1879 { 1880 struct mps_debug_string *string; 1881 enum mps_debug_level_combiner op; 1882 char *token, *endtoken; 1883 size_t sz; 1884 int flags, i; 1885 1886 if (list == NULL || *list == '\0') 1887 return; 1888 1889 if (*list == '+') { 1890 op = COMB_ADD; 1891 list++; 1892 } else if (*list == '-') { 1893 op = COMB_SUB; 1894 list++; 1895 } else 1896 op = COMB_NONE; 1897 if (*list == '\0') 1898 return; 1899 1900 flags = 0; 1901 sz = sizeof(mps_debug_strings) / sizeof(mps_debug_strings[0]); 1902 while ((token = strsep(&list, ":,")) != NULL) { 1903 1904 /* Handle integer flags */ 1905 flags |= strtol(token, &endtoken, 0); 1906 if (token != endtoken) 1907 continue; 1908 1909 /* Handle text flags */ 1910 for (i = 0; i < sz; i++) { 1911 string = &mps_debug_strings[i]; 1912 if (strcasecmp(token, string->name) == 0) { 1913 flags |= string->flag; 1914 break; 1915 } 1916 } 1917 } 1918 1919 switch (op) { 1920 case COMB_NONE: 1921 sc->mps_debug = flags; 1922 break; 1923 case COMB_ADD: 1924 sc->mps_debug |= flags; 1925 break; 1926 case COMB_SUB: 1927 sc->mps_debug &= (~flags); 1928 break; 1929 } 1930 1931 return; 1932 } 1933 1934 struct mps_dumpreq_hdr { 1935 uint32_t smid; 1936 uint32_t state; 1937 uint32_t numframes; 1938 uint32_t deschi; 1939 uint32_t desclo; 1940 }; 1941 1942 static int 1943 mps_dump_reqs(SYSCTL_HANDLER_ARGS) 1944 { 1945 struct mps_softc *sc; 1946 struct mps_chain *chain, *chain1; 1947 struct mps_command *cm; 1948 struct mps_dumpreq_hdr hdr; 1949 struct sbuf *sb; 1950 uint32_t smid, state; 1951 int i, numreqs, error = 0; 1952 1953 sc = (struct mps_softc *)arg1; 1954 1955 if ((error = priv_check(curthread, PRIV_DRIVER)) != 0) { 1956 printf("priv check error %d\n", error); 1957 return (error); 1958 } 1959 1960 state = MPS_CM_STATE_INQUEUE; 1961 smid = 1; 1962 numreqs = sc->num_reqs; 1963 1964 if (req->newptr != NULL) 1965 return (EINVAL); 1966 1967 if (smid == 0 || smid > sc->num_reqs) 1968 return (EINVAL); 1969 if (numreqs <= 0 || (numreqs + smid > sc->num_reqs)) 1970 numreqs = sc->num_reqs; 1971 sb = sbuf_new_for_sysctl(NULL, NULL, 4096, req); 1972 1973 /* Best effort, no locking */ 1974 for (i = smid; i < numreqs; i++) { 1975 cm = &sc->commands[i]; 1976 if (cm->cm_state != state) 1977 continue; 1978 hdr.smid = i; 1979 hdr.state = cm->cm_state; 1980 hdr.numframes = 1; 1981 hdr.deschi = cm->cm_desc.Words.High; 1982 hdr.desclo = cm->cm_desc.Words.Low; 1983 TAILQ_FOREACH_SAFE(chain, &cm->cm_chain_list, chain_link, 1984 chain1) 1985 hdr.numframes++; 1986 sbuf_bcat(sb, &hdr, sizeof(hdr)); 1987 sbuf_bcat(sb, cm->cm_req, 128); 1988 TAILQ_FOREACH_SAFE(chain, &cm->cm_chain_list, chain_link, 1989 chain1) 1990 sbuf_bcat(sb, chain->chain, 128); 1991 } 1992 1993 error = sbuf_finish(sb); 1994 sbuf_delete(sb); 1995 return (error); 1996 } 1997 1998 int 1999 mps_attach(struct mps_softc *sc) 2000 { 2001 int error; 2002 2003 MPS_FUNCTRACE(sc); 2004 mps_dprint(sc, MPS_INIT, "%s entered\n", __func__); 2005 2006 mtx_init(&sc->mps_mtx, "MPT2SAS lock", NULL, MTX_DEF); 2007 callout_init_mtx(&sc->periodic, &sc->mps_mtx, 0); 2008 callout_init_mtx(&sc->device_check_callout, &sc->mps_mtx, 0); 2009 TAILQ_INIT(&sc->event_list); 2010 timevalclear(&sc->lastfail); 2011 2012 if ((error = mps_transition_ready(sc)) != 0) { 2013 mps_dprint(sc, MPS_INIT|MPS_FAULT, "failed to transition " 2014 "ready\n"); 2015 return (error); 2016 } 2017 2018 sc->facts = malloc(sizeof(MPI2_IOC_FACTS_REPLY), M_MPT2, 2019 M_ZERO|M_NOWAIT); 2020 if(!sc->facts) { 2021 mps_dprint(sc, MPS_INIT|MPS_FAULT, "Cannot allocate memory, " 2022 "exit\n"); 2023 return (ENOMEM); 2024 } 2025 2026 /* 2027 * Get IOC Facts and allocate all structures based on this information. 2028 * A Diag Reset will also call mps_iocfacts_allocate and re-read the IOC 2029 * Facts. If relevant values have changed in IOC Facts, this function 2030 * will free all of the memory based on IOC Facts and reallocate that 2031 * memory. If this fails, any allocated memory should already be freed. 2032 */ 2033 if ((error = mps_iocfacts_allocate(sc, TRUE)) != 0) { 2034 mps_dprint(sc, MPS_INIT|MPS_FAULT, "IOC Facts based allocation " 2035 "failed with error %d, exit\n", error); 2036 return (error); 2037 } 2038 2039 /* Start the periodic watchdog check on the IOC Doorbell */ 2040 mps_periodic(sc); 2041 2042 /* 2043 * The portenable will kick off discovery events that will drive the 2044 * rest of the initialization process. The CAM/SAS module will 2045 * hold up the boot sequence until discovery is complete. 2046 */ 2047 sc->mps_ich.ich_func = mps_startup; 2048 sc->mps_ich.ich_arg = sc; 2049 if (config_intrhook_establish(&sc->mps_ich) != 0) { 2050 mps_dprint(sc, MPS_INIT|MPS_ERROR, 2051 "Cannot establish MPS config hook\n"); 2052 error = EINVAL; 2053 } 2054 2055 /* 2056 * Allow IR to shutdown gracefully when shutdown occurs. 2057 */ 2058 sc->shutdown_eh = EVENTHANDLER_REGISTER(shutdown_final, 2059 mpssas_ir_shutdown, sc, SHUTDOWN_PRI_DEFAULT); 2060 2061 if (sc->shutdown_eh == NULL) 2062 mps_dprint(sc, MPS_INIT|MPS_ERROR, 2063 "shutdown event registration failed\n"); 2064 2065 mps_setup_sysctl(sc); 2066 2067 sc->mps_flags |= MPS_FLAGS_ATTACH_DONE; 2068 mps_dprint(sc, MPS_INIT, "%s exit error= %d\n", __func__, error); 2069 2070 return (error); 2071 } 2072 2073 /* Run through any late-start handlers. */ 2074 static void 2075 mps_startup(void *arg) 2076 { 2077 struct mps_softc *sc; 2078 2079 sc = (struct mps_softc *)arg; 2080 mps_dprint(sc, MPS_INIT, "%s entered\n", __func__); 2081 2082 mps_lock(sc); 2083 mps_unmask_intr(sc); 2084 2085 /* initialize device mapping tables */ 2086 mps_base_static_config_pages(sc); 2087 mps_mapping_initialize(sc); 2088 mpssas_startup(sc); 2089 mps_unlock(sc); 2090 2091 mps_dprint(sc, MPS_INIT, "disestablish config intrhook\n"); 2092 config_intrhook_disestablish(&sc->mps_ich); 2093 sc->mps_ich.ich_arg = NULL; 2094 2095 mps_dprint(sc, MPS_INIT, "%s exit\n", __func__); 2096 } 2097 2098 /* Periodic watchdog. Is called with the driver lock already held. */ 2099 static void 2100 mps_periodic(void *arg) 2101 { 2102 struct mps_softc *sc; 2103 uint32_t db; 2104 2105 sc = (struct mps_softc *)arg; 2106 if (sc->mps_flags & MPS_FLAGS_SHUTDOWN) 2107 return; 2108 2109 db = mps_regread(sc, MPI2_DOORBELL_OFFSET); 2110 if ((db & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) { 2111 mps_dprint(sc, MPS_FAULT, "IOC Fault 0x%08x, Resetting\n", db); 2112 mps_reinit(sc); 2113 } 2114 2115 callout_reset(&sc->periodic, MPS_PERIODIC_DELAY * hz, mps_periodic, sc); 2116 } 2117 2118 static void 2119 mps_log_evt_handler(struct mps_softc *sc, uintptr_t data, 2120 MPI2_EVENT_NOTIFICATION_REPLY *event) 2121 { 2122 MPI2_EVENT_DATA_LOG_ENTRY_ADDED *entry; 2123 2124 MPS_DPRINT_EVENT(sc, generic, event); 2125 2126 switch (event->Event) { 2127 case MPI2_EVENT_LOG_DATA: 2128 mps_dprint(sc, MPS_EVENT, "MPI2_EVENT_LOG_DATA:\n"); 2129 if (sc->mps_debug & MPS_EVENT) 2130 hexdump(event->EventData, event->EventDataLength, NULL, 0); 2131 break; 2132 case MPI2_EVENT_LOG_ENTRY_ADDED: 2133 entry = (MPI2_EVENT_DATA_LOG_ENTRY_ADDED *)event->EventData; 2134 mps_dprint(sc, MPS_EVENT, "MPI2_EVENT_LOG_ENTRY_ADDED event " 2135 "0x%x Sequence %d:\n", entry->LogEntryQualifier, 2136 entry->LogSequence); 2137 break; 2138 default: 2139 break; 2140 } 2141 return; 2142 } 2143 2144 static int 2145 mps_attach_log(struct mps_softc *sc) 2146 { 2147 u32 events[MPI2_EVENT_NOTIFY_EVENTMASK_WORDS]; 2148 2149 bzero(events, 16); 2150 setbit(events, MPI2_EVENT_LOG_DATA); 2151 setbit(events, MPI2_EVENT_LOG_ENTRY_ADDED); 2152 2153 mps_register_events(sc, events, mps_log_evt_handler, NULL, 2154 &sc->mps_log_eh); 2155 2156 return (0); 2157 } 2158 2159 static int 2160 mps_detach_log(struct mps_softc *sc) 2161 { 2162 2163 if (sc->mps_log_eh != NULL) 2164 mps_deregister_events(sc, sc->mps_log_eh); 2165 return (0); 2166 } 2167 2168 /* 2169 * Free all of the driver resources and detach submodules. Should be called 2170 * without the lock held. 2171 */ 2172 int 2173 mps_free(struct mps_softc *sc) 2174 { 2175 int error; 2176 2177 mps_dprint(sc, MPS_INIT, "%s entered\n", __func__); 2178 /* Turn off the watchdog */ 2179 mps_lock(sc); 2180 sc->mps_flags |= MPS_FLAGS_SHUTDOWN; 2181 mps_unlock(sc); 2182 /* Lock must not be held for this */ 2183 callout_drain(&sc->periodic); 2184 callout_drain(&sc->device_check_callout); 2185 2186 if (((error = mps_detach_log(sc)) != 0) || 2187 ((error = mps_detach_sas(sc)) != 0)) { 2188 mps_dprint(sc, MPS_INIT|MPS_FAULT, "failed to detach " 2189 "subsystems, exit\n"); 2190 return (error); 2191 } 2192 2193 mps_detach_user(sc); 2194 2195 /* Put the IOC back in the READY state. */ 2196 mps_lock(sc); 2197 if ((error = mps_transition_ready(sc)) != 0) { 2198 mps_unlock(sc); 2199 return (error); 2200 } 2201 mps_unlock(sc); 2202 2203 if (sc->facts != NULL) 2204 free(sc->facts, M_MPT2); 2205 2206 /* 2207 * Free all buffers that are based on IOC Facts. A Diag Reset may need 2208 * to free these buffers too. 2209 */ 2210 mps_iocfacts_free(sc); 2211 2212 if (sc->sysctl_tree != NULL) 2213 sysctl_ctx_free(&sc->sysctl_ctx); 2214 2215 /* Deregister the shutdown function */ 2216 if (sc->shutdown_eh != NULL) 2217 EVENTHANDLER_DEREGISTER(shutdown_final, sc->shutdown_eh); 2218 2219 mtx_destroy(&sc->mps_mtx); 2220 mps_dprint(sc, MPS_INIT, "%s exit\n", __func__); 2221 2222 return (0); 2223 } 2224 2225 static __inline void 2226 mps_complete_command(struct mps_softc *sc, struct mps_command *cm) 2227 { 2228 MPS_FUNCTRACE(sc); 2229 2230 if (cm == NULL) { 2231 mps_dprint(sc, MPS_ERROR, "Completing NULL command\n"); 2232 return; 2233 } 2234 2235 if (cm->cm_flags & MPS_CM_FLAGS_POLLED) 2236 cm->cm_flags |= MPS_CM_FLAGS_COMPLETE; 2237 2238 if (cm->cm_complete != NULL) { 2239 mps_dprint(sc, MPS_TRACE, 2240 "%s cm %p calling cm_complete %p data %p reply %p\n", 2241 __func__, cm, cm->cm_complete, cm->cm_complete_data, 2242 cm->cm_reply); 2243 cm->cm_complete(sc, cm); 2244 } 2245 2246 if (cm->cm_flags & MPS_CM_FLAGS_WAKEUP) { 2247 mps_dprint(sc, MPS_TRACE, "waking up %p\n", cm); 2248 wakeup(cm); 2249 } 2250 2251 if (cm->cm_sc->io_cmds_active != 0) { 2252 cm->cm_sc->io_cmds_active--; 2253 } else { 2254 mps_dprint(sc, MPS_ERROR, "Warning: io_cmds_active is " 2255 "out of sync - resynching to 0\n"); 2256 } 2257 } 2258 2259 2260 static void 2261 mps_sas_log_info(struct mps_softc *sc , u32 log_info) 2262 { 2263 union loginfo_type { 2264 u32 loginfo; 2265 struct { 2266 u32 subcode:16; 2267 u32 code:8; 2268 u32 originator:4; 2269 u32 bus_type:4; 2270 } dw; 2271 }; 2272 union loginfo_type sas_loginfo; 2273 char *originator_str = NULL; 2274 2275 sas_loginfo.loginfo = log_info; 2276 if (sas_loginfo.dw.bus_type != 3 /*SAS*/) 2277 return; 2278 2279 /* each nexus loss loginfo */ 2280 if (log_info == 0x31170000) 2281 return; 2282 2283 /* eat the loginfos associated with task aborts */ 2284 if ((log_info == 30050000 || log_info == 2285 0x31140000 || log_info == 0x31130000)) 2286 return; 2287 2288 switch (sas_loginfo.dw.originator) { 2289 case 0: 2290 originator_str = "IOP"; 2291 break; 2292 case 1: 2293 originator_str = "PL"; 2294 break; 2295 case 2: 2296 originator_str = "IR"; 2297 break; 2298 } 2299 2300 mps_dprint(sc, MPS_LOG, "log_info(0x%08x): originator(%s), " 2301 "code(0x%02x), sub_code(0x%04x)\n", log_info, 2302 originator_str, sas_loginfo.dw.code, 2303 sas_loginfo.dw.subcode); 2304 } 2305 2306 static void 2307 mps_display_reply_info(struct mps_softc *sc, uint8_t *reply) 2308 { 2309 MPI2DefaultReply_t *mpi_reply; 2310 u16 sc_status; 2311 2312 mpi_reply = (MPI2DefaultReply_t*)reply; 2313 sc_status = le16toh(mpi_reply->IOCStatus); 2314 if (sc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE) 2315 mps_sas_log_info(sc, le32toh(mpi_reply->IOCLogInfo)); 2316 } 2317 void 2318 mps_intr(void *data) 2319 { 2320 struct mps_softc *sc; 2321 uint32_t status; 2322 2323 sc = (struct mps_softc *)data; 2324 mps_dprint(sc, MPS_TRACE, "%s\n", __func__); 2325 2326 /* 2327 * Check interrupt status register to flush the bus. This is 2328 * needed for both INTx interrupts and driver-driven polling 2329 */ 2330 status = mps_regread(sc, MPI2_HOST_INTERRUPT_STATUS_OFFSET); 2331 if ((status & MPI2_HIS_REPLY_DESCRIPTOR_INTERRUPT) == 0) 2332 return; 2333 2334 mps_lock(sc); 2335 mps_intr_locked(data); 2336 mps_unlock(sc); 2337 return; 2338 } 2339 2340 /* 2341 * In theory, MSI/MSIX interrupts shouldn't need to read any registers on the 2342 * chip. Hopefully this theory is correct. 2343 */ 2344 void 2345 mps_intr_msi(void *data) 2346 { 2347 struct mps_softc *sc; 2348 2349 sc = (struct mps_softc *)data; 2350 mps_dprint(sc, MPS_TRACE, "%s\n", __func__); 2351 mps_lock(sc); 2352 mps_intr_locked(data); 2353 mps_unlock(sc); 2354 return; 2355 } 2356 2357 /* 2358 * The locking is overly broad and simplistic, but easy to deal with for now. 2359 */ 2360 void 2361 mps_intr_locked(void *data) 2362 { 2363 MPI2_REPLY_DESCRIPTORS_UNION *desc; 2364 MPI2_DIAG_RELEASE_REPLY *rel_rep; 2365 mps_fw_diagnostic_buffer_t *pBuffer; 2366 struct mps_softc *sc; 2367 struct mps_command *cm = NULL; 2368 uint64_t tdesc; 2369 uint8_t flags; 2370 u_int pq; 2371 2372 sc = (struct mps_softc *)data; 2373 2374 pq = sc->replypostindex; 2375 mps_dprint(sc, MPS_TRACE, 2376 "%s sc %p starting with replypostindex %u\n", 2377 __func__, sc, sc->replypostindex); 2378 2379 for ( ;; ) { 2380 cm = NULL; 2381 desc = &sc->post_queue[sc->replypostindex]; 2382 2383 /* 2384 * Copy and clear out the descriptor so that any reentry will 2385 * immediately know that this descriptor has already been 2386 * looked at. There is unfortunate casting magic because the 2387 * MPI API doesn't have a cardinal 64bit type. 2388 */ 2389 tdesc = 0xffffffffffffffff; 2390 tdesc = atomic_swap_64((uint64_t *)desc, tdesc); 2391 desc = (MPI2_REPLY_DESCRIPTORS_UNION *)&tdesc; 2392 2393 flags = desc->Default.ReplyFlags & 2394 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 2395 if ((flags == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 2396 || (le32toh(desc->Words.High) == 0xffffffff)) 2397 break; 2398 2399 /* increment the replypostindex now, so that event handlers 2400 * and cm completion handlers which decide to do a diag 2401 * reset can zero it without it getting incremented again 2402 * afterwards, and we break out of this loop on the next 2403 * iteration since the reply post queue has been cleared to 2404 * 0xFF and all descriptors look unused (which they are). 2405 */ 2406 if (++sc->replypostindex >= sc->pqdepth) 2407 sc->replypostindex = 0; 2408 2409 switch (flags) { 2410 case MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS: 2411 cm = &sc->commands[le16toh(desc->SCSIIOSuccess.SMID)]; 2412 KASSERT(cm->cm_state == MPS_CM_STATE_INQUEUE, 2413 ("command not inqueue\n")); 2414 cm->cm_state = MPS_CM_STATE_BUSY; 2415 cm->cm_reply = NULL; 2416 break; 2417 case MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY: 2418 { 2419 uint32_t baddr; 2420 uint8_t *reply; 2421 2422 /* 2423 * Re-compose the reply address from the address 2424 * sent back from the chip. The ReplyFrameAddress 2425 * is the lower 32 bits of the physical address of 2426 * particular reply frame. Convert that address to 2427 * host format, and then use that to provide the 2428 * offset against the virtual address base 2429 * (sc->reply_frames). 2430 */ 2431 baddr = le32toh(desc->AddressReply.ReplyFrameAddress); 2432 reply = sc->reply_frames + 2433 (baddr - ((uint32_t)sc->reply_busaddr)); 2434 /* 2435 * Make sure the reply we got back is in a valid 2436 * range. If not, go ahead and panic here, since 2437 * we'll probably panic as soon as we deference the 2438 * reply pointer anyway. 2439 */ 2440 if ((reply < sc->reply_frames) 2441 || (reply > (sc->reply_frames + 2442 (sc->fqdepth * sc->replyframesz)))) { 2443 printf("%s: WARNING: reply %p out of range!\n", 2444 __func__, reply); 2445 printf("%s: reply_frames %p, fqdepth %d, " 2446 "frame size %d\n", __func__, 2447 sc->reply_frames, sc->fqdepth, 2448 sc->replyframesz); 2449 printf("%s: baddr %#x,\n", __func__, baddr); 2450 /* LSI-TODO. See Linux Code for Graceful exit */ 2451 panic("Reply address out of range"); 2452 } 2453 if (le16toh(desc->AddressReply.SMID) == 0) { 2454 if (((MPI2_DEFAULT_REPLY *)reply)->Function == 2455 MPI2_FUNCTION_DIAG_BUFFER_POST) { 2456 /* 2457 * If SMID is 0 for Diag Buffer Post, 2458 * this implies that the reply is due to 2459 * a release function with a status that 2460 * the buffer has been released. Set 2461 * the buffer flags accordingly. 2462 */ 2463 rel_rep = 2464 (MPI2_DIAG_RELEASE_REPLY *)reply; 2465 if ((le16toh(rel_rep->IOCStatus) & 2466 MPI2_IOCSTATUS_MASK) == 2467 MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED) 2468 { 2469 pBuffer = 2470 &sc->fw_diag_buffer_list[ 2471 rel_rep->BufferType]; 2472 pBuffer->valid_data = TRUE; 2473 pBuffer->owned_by_firmware = 2474 FALSE; 2475 pBuffer->immediate = FALSE; 2476 } 2477 } else 2478 mps_dispatch_event(sc, baddr, 2479 (MPI2_EVENT_NOTIFICATION_REPLY *) 2480 reply); 2481 } else { 2482 /* 2483 * Ignore commands not in INQUEUE state 2484 * since they've already been completed 2485 * via another path. 2486 */ 2487 cm = &sc->commands[ 2488 le16toh(desc->AddressReply.SMID)]; 2489 if (cm->cm_state == MPS_CM_STATE_INQUEUE) { 2490 cm->cm_state = MPS_CM_STATE_BUSY; 2491 cm->cm_reply = reply; 2492 cm->cm_reply_data = le32toh( 2493 desc->AddressReply.ReplyFrameAddress); 2494 } else { 2495 mps_dprint(sc, MPS_RECOVERY, 2496 "Bad state for ADDRESS_REPLY status," 2497 " ignoring state %d cm %p\n", 2498 cm->cm_state, cm); 2499 } 2500 } 2501 break; 2502 } 2503 case MPI2_RPY_DESCRIPT_FLAGS_TARGETASSIST_SUCCESS: 2504 case MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER: 2505 case MPI2_RPY_DESCRIPT_FLAGS_RAID_ACCELERATOR_SUCCESS: 2506 default: 2507 /* Unhandled */ 2508 mps_dprint(sc, MPS_ERROR, "Unhandled reply 0x%x\n", 2509 desc->Default.ReplyFlags); 2510 cm = NULL; 2511 break; 2512 } 2513 2514 2515 if (cm != NULL) { 2516 // Print Error reply frame 2517 if (cm->cm_reply) 2518 mps_display_reply_info(sc,cm->cm_reply); 2519 mps_complete_command(sc, cm); 2520 } 2521 } 2522 2523 if (pq != sc->replypostindex) { 2524 mps_dprint(sc, MPS_TRACE, "%s sc %p writing postindex %d\n", 2525 __func__, sc, sc->replypostindex); 2526 mps_regwrite(sc, MPI2_REPLY_POST_HOST_INDEX_OFFSET, 2527 sc->replypostindex); 2528 } 2529 2530 return; 2531 } 2532 2533 static void 2534 mps_dispatch_event(struct mps_softc *sc, uintptr_t data, 2535 MPI2_EVENT_NOTIFICATION_REPLY *reply) 2536 { 2537 struct mps_event_handle *eh; 2538 int event, handled = 0; 2539 2540 event = le16toh(reply->Event); 2541 TAILQ_FOREACH(eh, &sc->event_list, eh_list) { 2542 if (isset(eh->mask, event)) { 2543 eh->callback(sc, data, reply); 2544 handled++; 2545 } 2546 } 2547 2548 if (handled == 0) 2549 mps_dprint(sc, MPS_EVENT, "Unhandled event 0x%x\n", le16toh(event)); 2550 2551 /* 2552 * This is the only place that the event/reply should be freed. 2553 * Anything wanting to hold onto the event data should have 2554 * already copied it into their own storage. 2555 */ 2556 mps_free_reply(sc, data); 2557 } 2558 2559 static void 2560 mps_reregister_events_complete(struct mps_softc *sc, struct mps_command *cm) 2561 { 2562 mps_dprint(sc, MPS_TRACE, "%s\n", __func__); 2563 2564 if (cm->cm_reply) 2565 MPS_DPRINT_EVENT(sc, generic, 2566 (MPI2_EVENT_NOTIFICATION_REPLY *)cm->cm_reply); 2567 2568 mps_free_command(sc, cm); 2569 2570 /* next, send a port enable */ 2571 mpssas_startup(sc); 2572 } 2573 2574 /* 2575 * For both register_events and update_events, the caller supplies a bitmap 2576 * of events that it _wants_. These functions then turn that into a bitmask 2577 * suitable for the controller. 2578 */ 2579 int 2580 mps_register_events(struct mps_softc *sc, u32 *mask, 2581 mps_evt_callback_t *cb, void *data, struct mps_event_handle **handle) 2582 { 2583 struct mps_event_handle *eh; 2584 int error = 0; 2585 2586 eh = malloc(sizeof(struct mps_event_handle), M_MPT2, M_WAITOK|M_ZERO); 2587 if(!eh) { 2588 mps_dprint(sc, MPS_ERROR, "Cannot allocate event memory\n"); 2589 return (ENOMEM); 2590 } 2591 eh->callback = cb; 2592 eh->data = data; 2593 TAILQ_INSERT_TAIL(&sc->event_list, eh, eh_list); 2594 if (mask != NULL) 2595 error = mps_update_events(sc, eh, mask); 2596 *handle = eh; 2597 2598 return (error); 2599 } 2600 2601 int 2602 mps_update_events(struct mps_softc *sc, struct mps_event_handle *handle, 2603 u32 *mask) 2604 { 2605 MPI2_EVENT_NOTIFICATION_REQUEST *evtreq; 2606 MPI2_EVENT_NOTIFICATION_REPLY *reply = NULL; 2607 struct mps_command *cm; 2608 int error, i; 2609 2610 mps_dprint(sc, MPS_TRACE, "%s\n", __func__); 2611 2612 if ((mask != NULL) && (handle != NULL)) 2613 bcopy(mask, &handle->mask[0], sizeof(u32) * 2614 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS); 2615 2616 for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) 2617 sc->event_mask[i] = -1; 2618 2619 for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) 2620 sc->event_mask[i] &= ~handle->mask[i]; 2621 2622 2623 if ((cm = mps_alloc_command(sc)) == NULL) 2624 return (EBUSY); 2625 evtreq = (MPI2_EVENT_NOTIFICATION_REQUEST *)cm->cm_req; 2626 evtreq->Function = MPI2_FUNCTION_EVENT_NOTIFICATION; 2627 evtreq->MsgFlags = 0; 2628 evtreq->SASBroadcastPrimitiveMasks = 0; 2629 #ifdef MPS_DEBUG_ALL_EVENTS 2630 { 2631 u_char fullmask[16]; 2632 memset(fullmask, 0x00, 16); 2633 bcopy(fullmask, &evtreq->EventMasks[0], sizeof(u32) * 2634 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS); 2635 } 2636 #else 2637 for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) 2638 evtreq->EventMasks[i] = 2639 htole32(sc->event_mask[i]); 2640 #endif 2641 cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE; 2642 cm->cm_data = NULL; 2643 2644 error = mps_wait_command(sc, &cm, 60, 0); 2645 if (cm != NULL) 2646 reply = (MPI2_EVENT_NOTIFICATION_REPLY *)cm->cm_reply; 2647 if ((reply == NULL) || 2648 (reply->IOCStatus & MPI2_IOCSTATUS_MASK) != MPI2_IOCSTATUS_SUCCESS) 2649 error = ENXIO; 2650 2651 if (reply) 2652 MPS_DPRINT_EVENT(sc, generic, reply); 2653 2654 mps_dprint(sc, MPS_TRACE, "%s finished error %d\n", __func__, error); 2655 2656 if (cm != NULL) 2657 mps_free_command(sc, cm); 2658 return (error); 2659 } 2660 2661 static int 2662 mps_reregister_events(struct mps_softc *sc) 2663 { 2664 MPI2_EVENT_NOTIFICATION_REQUEST *evtreq; 2665 struct mps_command *cm; 2666 struct mps_event_handle *eh; 2667 int error, i; 2668 2669 mps_dprint(sc, MPS_TRACE, "%s\n", __func__); 2670 2671 /* first, reregister events */ 2672 2673 for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) 2674 sc->event_mask[i] = -1; 2675 2676 TAILQ_FOREACH(eh, &sc->event_list, eh_list) { 2677 for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) 2678 sc->event_mask[i] &= ~eh->mask[i]; 2679 } 2680 2681 if ((cm = mps_alloc_command(sc)) == NULL) 2682 return (EBUSY); 2683 evtreq = (MPI2_EVENT_NOTIFICATION_REQUEST *)cm->cm_req; 2684 evtreq->Function = MPI2_FUNCTION_EVENT_NOTIFICATION; 2685 evtreq->MsgFlags = 0; 2686 evtreq->SASBroadcastPrimitiveMasks = 0; 2687 #ifdef MPS_DEBUG_ALL_EVENTS 2688 { 2689 u_char fullmask[16]; 2690 memset(fullmask, 0x00, 16); 2691 bcopy(fullmask, &evtreq->EventMasks[0], sizeof(u32) * 2692 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS); 2693 } 2694 #else 2695 for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) 2696 evtreq->EventMasks[i] = 2697 htole32(sc->event_mask[i]); 2698 #endif 2699 cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE; 2700 cm->cm_data = NULL; 2701 cm->cm_complete = mps_reregister_events_complete; 2702 2703 error = mps_map_command(sc, cm); 2704 2705 mps_dprint(sc, MPS_TRACE, "%s finished with error %d\n", __func__, 2706 error); 2707 return (error); 2708 } 2709 2710 void 2711 mps_deregister_events(struct mps_softc *sc, struct mps_event_handle *handle) 2712 { 2713 2714 TAILQ_REMOVE(&sc->event_list, handle, eh_list); 2715 free(handle, M_MPT2); 2716 } 2717 2718 /* 2719 * Add a chain element as the next SGE for the specified command. 2720 * Reset cm_sge and cm_sgesize to indicate all the available space. 2721 */ 2722 static int 2723 mps_add_chain(struct mps_command *cm) 2724 { 2725 MPI2_SGE_CHAIN32 *sgc; 2726 struct mps_chain *chain; 2727 u_int space; 2728 2729 if (cm->cm_sglsize < MPS_SGC_SIZE) 2730 panic("MPS: Need SGE Error Code\n"); 2731 2732 chain = mps_alloc_chain(cm->cm_sc); 2733 if (chain == NULL) 2734 return (ENOBUFS); 2735 2736 space = cm->cm_sc->reqframesz; 2737 2738 /* 2739 * Note: a double-linked list is used to make it easier to 2740 * walk for debugging. 2741 */ 2742 TAILQ_INSERT_TAIL(&cm->cm_chain_list, chain, chain_link); 2743 2744 sgc = (MPI2_SGE_CHAIN32 *)&cm->cm_sge->MpiChain; 2745 sgc->Length = htole16(space); 2746 sgc->NextChainOffset = 0; 2747 /* TODO Looks like bug in Setting sgc->Flags. 2748 * sgc->Flags = ( MPI2_SGE_FLAGS_CHAIN_ELEMENT | MPI2_SGE_FLAGS_64_BIT_ADDRESSING | 2749 * MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT 2750 * This is fine.. because we are not using simple element. In case of 2751 * MPI2_SGE_CHAIN32, we have separate Length and Flags feild. 2752 */ 2753 sgc->Flags = MPI2_SGE_FLAGS_CHAIN_ELEMENT; 2754 sgc->Address = htole32(chain->chain_busaddr); 2755 2756 cm->cm_sge = (MPI2_SGE_IO_UNION *)&chain->chain->MpiSimple; 2757 cm->cm_sglsize = space; 2758 return (0); 2759 } 2760 2761 /* 2762 * Add one scatter-gather element (chain, simple, transaction context) 2763 * to the scatter-gather list for a command. Maintain cm_sglsize and 2764 * cm_sge as the remaining size and pointer to the next SGE to fill 2765 * in, respectively. 2766 */ 2767 int 2768 mps_push_sge(struct mps_command *cm, void *sgep, size_t len, int segsleft) 2769 { 2770 MPI2_SGE_TRANSACTION_UNION *tc = sgep; 2771 MPI2_SGE_SIMPLE64 *sge = sgep; 2772 int error, type; 2773 uint32_t saved_buf_len, saved_address_low, saved_address_high; 2774 2775 type = (tc->Flags & MPI2_SGE_FLAGS_ELEMENT_MASK); 2776 2777 #ifdef INVARIANTS 2778 switch (type) { 2779 case MPI2_SGE_FLAGS_TRANSACTION_ELEMENT: { 2780 if (len != tc->DetailsLength + 4) 2781 panic("TC %p length %u or %zu?", tc, 2782 tc->DetailsLength + 4, len); 2783 } 2784 break; 2785 case MPI2_SGE_FLAGS_CHAIN_ELEMENT: 2786 /* Driver only uses 32-bit chain elements */ 2787 if (len != MPS_SGC_SIZE) 2788 panic("CHAIN %p length %u or %zu?", sgep, 2789 MPS_SGC_SIZE, len); 2790 break; 2791 case MPI2_SGE_FLAGS_SIMPLE_ELEMENT: 2792 /* Driver only uses 64-bit SGE simple elements */ 2793 if (len != MPS_SGE64_SIZE) 2794 panic("SGE simple %p length %u or %zu?", sge, 2795 MPS_SGE64_SIZE, len); 2796 if (((le32toh(sge->FlagsLength) >> MPI2_SGE_FLAGS_SHIFT) & 2797 MPI2_SGE_FLAGS_ADDRESS_SIZE) == 0) 2798 panic("SGE simple %p not marked 64-bit?", sge); 2799 2800 break; 2801 default: 2802 panic("Unexpected SGE %p, flags %02x", tc, tc->Flags); 2803 } 2804 #endif 2805 2806 /* 2807 * case 1: 1 more segment, enough room for it 2808 * case 2: 2 more segments, enough room for both 2809 * case 3: >=2 more segments, only enough room for 1 and a chain 2810 * case 4: >=1 more segment, enough room for only a chain 2811 * case 5: >=1 more segment, no room for anything (error) 2812 */ 2813 2814 /* 2815 * There should be room for at least a chain element, or this 2816 * code is buggy. Case (5). 2817 */ 2818 if (cm->cm_sglsize < MPS_SGC_SIZE) 2819 panic("MPS: Need SGE Error Code\n"); 2820 2821 if (segsleft >= 1 && cm->cm_sglsize < len + MPS_SGC_SIZE) { 2822 /* 2823 * 1 or more segment, enough room for only a chain. 2824 * Hope the previous element wasn't a Simple entry 2825 * that needed to be marked with 2826 * MPI2_SGE_FLAGS_LAST_ELEMENT. Case (4). 2827 */ 2828 if ((error = mps_add_chain(cm)) != 0) 2829 return (error); 2830 } 2831 2832 if (segsleft >= 2 && 2833 cm->cm_sglsize < len + MPS_SGC_SIZE + MPS_SGE64_SIZE) { 2834 /* 2835 * There are 2 or more segments left to add, and only 2836 * enough room for 1 and a chain. Case (3). 2837 * 2838 * Mark as last element in this chain if necessary. 2839 */ 2840 if (type == MPI2_SGE_FLAGS_SIMPLE_ELEMENT) { 2841 sge->FlagsLength |= htole32( 2842 MPI2_SGE_FLAGS_LAST_ELEMENT << MPI2_SGE_FLAGS_SHIFT); 2843 } 2844 2845 /* 2846 * Add the item then a chain. Do the chain now, 2847 * rather than on the next iteration, to simplify 2848 * understanding the code. 2849 */ 2850 cm->cm_sglsize -= len; 2851 bcopy(sgep, cm->cm_sge, len); 2852 cm->cm_sge = (MPI2_SGE_IO_UNION *)((uintptr_t)cm->cm_sge + len); 2853 return (mps_add_chain(cm)); 2854 } 2855 2856 #ifdef INVARIANTS 2857 /* Case 1: 1 more segment, enough room for it. */ 2858 if (segsleft == 1 && cm->cm_sglsize < len) 2859 panic("1 seg left and no room? %u versus %zu", 2860 cm->cm_sglsize, len); 2861 2862 /* Case 2: 2 more segments, enough room for both */ 2863 if (segsleft == 2 && cm->cm_sglsize < len + MPS_SGE64_SIZE) 2864 panic("2 segs left and no room? %u versus %zu", 2865 cm->cm_sglsize, len); 2866 #endif 2867 2868 if (segsleft == 1 && type == MPI2_SGE_FLAGS_SIMPLE_ELEMENT) { 2869 /* 2870 * If this is a bi-directional request, need to account for that 2871 * here. Save the pre-filled sge values. These will be used 2872 * either for the 2nd SGL or for a single direction SGL. If 2873 * cm_out_len is non-zero, this is a bi-directional request, so 2874 * fill in the OUT SGL first, then the IN SGL, otherwise just 2875 * fill in the IN SGL. Note that at this time, when filling in 2876 * 2 SGL's for a bi-directional request, they both use the same 2877 * DMA buffer (same cm command). 2878 */ 2879 saved_buf_len = le32toh(sge->FlagsLength) & 0x00FFFFFF; 2880 saved_address_low = sge->Address.Low; 2881 saved_address_high = sge->Address.High; 2882 if (cm->cm_out_len) { 2883 sge->FlagsLength = htole32(cm->cm_out_len | 2884 ((uint32_t)(MPI2_SGE_FLAGS_SIMPLE_ELEMENT | 2885 MPI2_SGE_FLAGS_END_OF_BUFFER | 2886 MPI2_SGE_FLAGS_HOST_TO_IOC | 2887 MPI2_SGE_FLAGS_64_BIT_ADDRESSING) << 2888 MPI2_SGE_FLAGS_SHIFT)); 2889 cm->cm_sglsize -= len; 2890 bcopy(sgep, cm->cm_sge, len); 2891 cm->cm_sge = (MPI2_SGE_IO_UNION *)((uintptr_t)cm->cm_sge 2892 + len); 2893 } 2894 saved_buf_len |= 2895 ((uint32_t)(MPI2_SGE_FLAGS_SIMPLE_ELEMENT | 2896 MPI2_SGE_FLAGS_END_OF_BUFFER | 2897 MPI2_SGE_FLAGS_LAST_ELEMENT | 2898 MPI2_SGE_FLAGS_END_OF_LIST | 2899 MPI2_SGE_FLAGS_64_BIT_ADDRESSING) << 2900 MPI2_SGE_FLAGS_SHIFT); 2901 if (cm->cm_flags & MPS_CM_FLAGS_DATAIN) { 2902 saved_buf_len |= 2903 ((uint32_t)(MPI2_SGE_FLAGS_IOC_TO_HOST) << 2904 MPI2_SGE_FLAGS_SHIFT); 2905 } else { 2906 saved_buf_len |= 2907 ((uint32_t)(MPI2_SGE_FLAGS_HOST_TO_IOC) << 2908 MPI2_SGE_FLAGS_SHIFT); 2909 } 2910 sge->FlagsLength = htole32(saved_buf_len); 2911 sge->Address.Low = saved_address_low; 2912 sge->Address.High = saved_address_high; 2913 } 2914 2915 cm->cm_sglsize -= len; 2916 bcopy(sgep, cm->cm_sge, len); 2917 cm->cm_sge = (MPI2_SGE_IO_UNION *)((uintptr_t)cm->cm_sge + len); 2918 return (0); 2919 } 2920 2921 /* 2922 * Add one dma segment to the scatter-gather list for a command. 2923 */ 2924 int 2925 mps_add_dmaseg(struct mps_command *cm, vm_paddr_t pa, size_t len, u_int flags, 2926 int segsleft) 2927 { 2928 MPI2_SGE_SIMPLE64 sge; 2929 2930 /* 2931 * This driver always uses 64-bit address elements for simplicity. 2932 */ 2933 bzero(&sge, sizeof(sge)); 2934 flags |= MPI2_SGE_FLAGS_SIMPLE_ELEMENT | 2935 MPI2_SGE_FLAGS_64_BIT_ADDRESSING; 2936 sge.FlagsLength = htole32(len | (flags << MPI2_SGE_FLAGS_SHIFT)); 2937 mps_from_u64(pa, &sge.Address); 2938 2939 return (mps_push_sge(cm, &sge, sizeof sge, segsleft)); 2940 } 2941 2942 static void 2943 mps_data_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 2944 { 2945 struct mps_softc *sc; 2946 struct mps_command *cm; 2947 u_int i, dir, sflags; 2948 2949 cm = (struct mps_command *)arg; 2950 sc = cm->cm_sc; 2951 2952 /* 2953 * In this case, just print out a warning and let the chip tell the 2954 * user they did the wrong thing. 2955 */ 2956 if ((cm->cm_max_segs != 0) && (nsegs > cm->cm_max_segs)) { 2957 mps_dprint(sc, MPS_ERROR, 2958 "%s: warning: busdma returned %d segments, " 2959 "more than the %d allowed\n", __func__, nsegs, 2960 cm->cm_max_segs); 2961 } 2962 2963 /* 2964 * Set up DMA direction flags. Bi-directional requests are also handled 2965 * here. In that case, both direction flags will be set. 2966 */ 2967 sflags = 0; 2968 if (cm->cm_flags & MPS_CM_FLAGS_SMP_PASS) { 2969 /* 2970 * We have to add a special case for SMP passthrough, there 2971 * is no easy way to generically handle it. The first 2972 * S/G element is used for the command (therefore the 2973 * direction bit needs to be set). The second one is used 2974 * for the reply. We'll leave it to the caller to make 2975 * sure we only have two buffers. 2976 */ 2977 /* 2978 * Even though the busdma man page says it doesn't make 2979 * sense to have both direction flags, it does in this case. 2980 * We have one s/g element being accessed in each direction. 2981 */ 2982 dir = BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD; 2983 2984 /* 2985 * Set the direction flag on the first buffer in the SMP 2986 * passthrough request. We'll clear it for the second one. 2987 */ 2988 sflags |= MPI2_SGE_FLAGS_DIRECTION | 2989 MPI2_SGE_FLAGS_END_OF_BUFFER; 2990 } else if (cm->cm_flags & MPS_CM_FLAGS_DATAOUT) { 2991 sflags |= MPI2_SGE_FLAGS_HOST_TO_IOC; 2992 dir = BUS_DMASYNC_PREWRITE; 2993 } else 2994 dir = BUS_DMASYNC_PREREAD; 2995 2996 for (i = 0; i < nsegs; i++) { 2997 if ((cm->cm_flags & MPS_CM_FLAGS_SMP_PASS) && (i != 0)) { 2998 sflags &= ~MPI2_SGE_FLAGS_DIRECTION; 2999 } 3000 error = mps_add_dmaseg(cm, segs[i].ds_addr, segs[i].ds_len, 3001 sflags, nsegs - i); 3002 if (error != 0) { 3003 /* Resource shortage, roll back! */ 3004 if (ratecheck(&sc->lastfail, &mps_chainfail_interval)) 3005 mps_dprint(sc, MPS_INFO, "Out of chain frames, " 3006 "consider increasing hw.mps.max_chains.\n"); 3007 cm->cm_flags |= MPS_CM_FLAGS_CHAIN_FAILED; 3008 mps_complete_command(sc, cm); 3009 return; 3010 } 3011 } 3012 3013 bus_dmamap_sync(sc->buffer_dmat, cm->cm_dmamap, dir); 3014 mps_enqueue_request(sc, cm); 3015 3016 return; 3017 } 3018 3019 static void 3020 mps_data_cb2(void *arg, bus_dma_segment_t *segs, int nsegs, bus_size_t mapsize, 3021 int error) 3022 { 3023 mps_data_cb(arg, segs, nsegs, error); 3024 } 3025 3026 /* 3027 * This is the routine to enqueue commands ansynchronously. 3028 * Note that the only error path here is from bus_dmamap_load(), which can 3029 * return EINPROGRESS if it is waiting for resources. Other than this, it's 3030 * assumed that if you have a command in-hand, then you have enough credits 3031 * to use it. 3032 */ 3033 int 3034 mps_map_command(struct mps_softc *sc, struct mps_command *cm) 3035 { 3036 int error = 0; 3037 3038 if (cm->cm_flags & MPS_CM_FLAGS_USE_UIO) { 3039 error = bus_dmamap_load_uio(sc->buffer_dmat, cm->cm_dmamap, 3040 &cm->cm_uio, mps_data_cb2, cm, 0); 3041 } else if (cm->cm_flags & MPS_CM_FLAGS_USE_CCB) { 3042 error = bus_dmamap_load_ccb(sc->buffer_dmat, cm->cm_dmamap, 3043 cm->cm_data, mps_data_cb, cm, 0); 3044 } else if ((cm->cm_data != NULL) && (cm->cm_length != 0)) { 3045 error = bus_dmamap_load(sc->buffer_dmat, cm->cm_dmamap, 3046 cm->cm_data, cm->cm_length, mps_data_cb, cm, 0); 3047 } else { 3048 /* Add a zero-length element as needed */ 3049 if (cm->cm_sge != NULL) 3050 mps_add_dmaseg(cm, 0, 0, 0, 1); 3051 mps_enqueue_request(sc, cm); 3052 } 3053 3054 return (error); 3055 } 3056 3057 /* 3058 * This is the routine to enqueue commands synchronously. An error of 3059 * EINPROGRESS from mps_map_command() is ignored since the command will 3060 * be executed and enqueued automatically. Other errors come from msleep(). 3061 */ 3062 int 3063 mps_wait_command(struct mps_softc *sc, struct mps_command **cmp, int timeout, 3064 int sleep_flag) 3065 { 3066 int error, rc; 3067 struct timeval cur_time, start_time; 3068 struct mps_command *cm = *cmp; 3069 3070 if (sc->mps_flags & MPS_FLAGS_DIAGRESET) 3071 return EBUSY; 3072 3073 cm->cm_complete = NULL; 3074 cm->cm_flags |= MPS_CM_FLAGS_POLLED; 3075 error = mps_map_command(sc, cm); 3076 if ((error != 0) && (error != EINPROGRESS)) 3077 return (error); 3078 3079 /* 3080 * Check for context and wait for 50 mSec at a time until time has 3081 * expired or the command has finished. If msleep can't be used, need 3082 * to poll. 3083 */ 3084 if (curthread->td_no_sleeping != 0) 3085 sleep_flag = NO_SLEEP; 3086 getmicrouptime(&start_time); 3087 if (mtx_owned(&sc->mps_mtx) && sleep_flag == CAN_SLEEP) { 3088 cm->cm_flags |= MPS_CM_FLAGS_WAKEUP; 3089 error = msleep(cm, &sc->mps_mtx, 0, "mpswait", timeout*hz); 3090 if (error == EWOULDBLOCK) { 3091 /* 3092 * Record the actual elapsed time in the case of a 3093 * timeout for the message below. 3094 */ 3095 getmicrouptime(&cur_time); 3096 timevalsub(&cur_time, &start_time); 3097 } 3098 } else { 3099 while ((cm->cm_flags & MPS_CM_FLAGS_COMPLETE) == 0) { 3100 mps_intr_locked(sc); 3101 if (sleep_flag == CAN_SLEEP) 3102 pause("mpswait", hz/20); 3103 else 3104 DELAY(50000); 3105 3106 getmicrouptime(&cur_time); 3107 timevalsub(&cur_time, &start_time); 3108 if (cur_time.tv_sec > timeout) { 3109 error = EWOULDBLOCK; 3110 break; 3111 } 3112 } 3113 } 3114 3115 if (error == EWOULDBLOCK) { 3116 if (cm->cm_timeout_handler == NULL) { 3117 mps_dprint(sc, MPS_FAULT, "Calling Reinit from %s, timeout=%d," 3118 " elapsed=%jd\n", __func__, timeout, 3119 (intmax_t)cur_time.tv_sec); 3120 rc = mps_reinit(sc); 3121 mps_dprint(sc, MPS_FAULT, "Reinit %s\n", (rc == 0) ? "success" : 3122 "failed"); 3123 } else 3124 cm->cm_timeout_handler(sc, cm); 3125 if (sc->mps_flags & MPS_FLAGS_REALLOCATED) { 3126 /* 3127 * Tell the caller that we freed the command in a 3128 * reinit. 3129 */ 3130 *cmp = NULL; 3131 } 3132 error = ETIMEDOUT; 3133 } 3134 return (error); 3135 } 3136 3137 /* 3138 * The MPT driver had a verbose interface for config pages. In this driver, 3139 * reduce it to much simpler terms, similar to the Linux driver. 3140 */ 3141 int 3142 mps_read_config_page(struct mps_softc *sc, struct mps_config_params *params) 3143 { 3144 MPI2_CONFIG_REQUEST *req; 3145 struct mps_command *cm; 3146 int error; 3147 3148 if (sc->mps_flags & MPS_FLAGS_BUSY) { 3149 return (EBUSY); 3150 } 3151 3152 cm = mps_alloc_command(sc); 3153 if (cm == NULL) { 3154 return (EBUSY); 3155 } 3156 3157 req = (MPI2_CONFIG_REQUEST *)cm->cm_req; 3158 req->Function = MPI2_FUNCTION_CONFIG; 3159 req->Action = params->action; 3160 req->SGLFlags = 0; 3161 req->ChainOffset = 0; 3162 req->PageAddress = params->page_address; 3163 if (params->hdr.Struct.PageType == MPI2_CONFIG_PAGETYPE_EXTENDED) { 3164 MPI2_CONFIG_EXTENDED_PAGE_HEADER *hdr; 3165 3166 hdr = ¶ms->hdr.Ext; 3167 req->ExtPageType = hdr->ExtPageType; 3168 req->ExtPageLength = hdr->ExtPageLength; 3169 req->Header.PageType = MPI2_CONFIG_PAGETYPE_EXTENDED; 3170 req->Header.PageLength = 0; /* Must be set to zero */ 3171 req->Header.PageNumber = hdr->PageNumber; 3172 req->Header.PageVersion = hdr->PageVersion; 3173 } else { 3174 MPI2_CONFIG_PAGE_HEADER *hdr; 3175 3176 hdr = ¶ms->hdr.Struct; 3177 req->Header.PageType = hdr->PageType; 3178 req->Header.PageNumber = hdr->PageNumber; 3179 req->Header.PageLength = hdr->PageLength; 3180 req->Header.PageVersion = hdr->PageVersion; 3181 } 3182 3183 cm->cm_data = params->buffer; 3184 cm->cm_length = params->length; 3185 if (cm->cm_data != NULL) { 3186 cm->cm_sge = &req->PageBufferSGE; 3187 cm->cm_sglsize = sizeof(MPI2_SGE_IO_UNION); 3188 cm->cm_flags = MPS_CM_FLAGS_SGE_SIMPLE | MPS_CM_FLAGS_DATAIN; 3189 } else 3190 cm->cm_sge = NULL; 3191 cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE; 3192 3193 cm->cm_complete_data = params; 3194 if (params->callback != NULL) { 3195 cm->cm_complete = mps_config_complete; 3196 return (mps_map_command(sc, cm)); 3197 } else { 3198 error = mps_wait_command(sc, &cm, 0, CAN_SLEEP); 3199 if (error) { 3200 mps_dprint(sc, MPS_FAULT, 3201 "Error %d reading config page\n", error); 3202 if (cm != NULL) 3203 mps_free_command(sc, cm); 3204 return (error); 3205 } 3206 mps_config_complete(sc, cm); 3207 } 3208 3209 return (0); 3210 } 3211 3212 int 3213 mps_write_config_page(struct mps_softc *sc, struct mps_config_params *params) 3214 { 3215 return (EINVAL); 3216 } 3217 3218 static void 3219 mps_config_complete(struct mps_softc *sc, struct mps_command *cm) 3220 { 3221 MPI2_CONFIG_REPLY *reply; 3222 struct mps_config_params *params; 3223 3224 MPS_FUNCTRACE(sc); 3225 params = cm->cm_complete_data; 3226 3227 if (cm->cm_data != NULL) { 3228 bus_dmamap_sync(sc->buffer_dmat, cm->cm_dmamap, 3229 BUS_DMASYNC_POSTREAD); 3230 bus_dmamap_unload(sc->buffer_dmat, cm->cm_dmamap); 3231 } 3232 3233 /* 3234 * XXX KDM need to do more error recovery? This results in the 3235 * device in question not getting probed. 3236 */ 3237 if ((cm->cm_flags & MPS_CM_FLAGS_ERROR_MASK) != 0) { 3238 params->status = MPI2_IOCSTATUS_BUSY; 3239 goto done; 3240 } 3241 3242 reply = (MPI2_CONFIG_REPLY *)cm->cm_reply; 3243 if (reply == NULL) { 3244 params->status = MPI2_IOCSTATUS_BUSY; 3245 goto done; 3246 } 3247 params->status = reply->IOCStatus; 3248 if (params->hdr.Struct.PageType == MPI2_CONFIG_PAGETYPE_EXTENDED) { 3249 params->hdr.Ext.ExtPageType = reply->ExtPageType; 3250 params->hdr.Ext.ExtPageLength = reply->ExtPageLength; 3251 params->hdr.Ext.PageType = reply->Header.PageType; 3252 params->hdr.Ext.PageNumber = reply->Header.PageNumber; 3253 params->hdr.Ext.PageVersion = reply->Header.PageVersion; 3254 } else { 3255 params->hdr.Struct.PageType = reply->Header.PageType; 3256 params->hdr.Struct.PageNumber = reply->Header.PageNumber; 3257 params->hdr.Struct.PageLength = reply->Header.PageLength; 3258 params->hdr.Struct.PageVersion = reply->Header.PageVersion; 3259 } 3260 3261 done: 3262 mps_free_command(sc, cm); 3263 if (params->callback != NULL) 3264 params->callback(sc, params); 3265 3266 return; 3267 } 3268