aac.c revision 119625
1/*- 2 * Copyright (c) 2000 Michael Smith 3 * Copyright (c) 2001 Scott Long 4 * Copyright (c) 2000 BSDi 5 * Copyright (c) 2001 Adaptec, Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD: head/sys/dev/aac/aac.c 119625 2003-09-01 00:20:29Z scottl $"); 32 33/* 34 * Driver for the Adaptec 'FSA' family of PCI/SCSI RAID adapters. 35 */ 36 37#include "opt_aac.h" 38 39/* #include <stddef.h> */ 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/malloc.h> 43#include <sys/kernel.h> 44#include <sys/kthread.h> 45#include <sys/sysctl.h> 46#include <sys/poll.h> 47#include <sys/ioccom.h> 48 49#include <sys/bus.h> 50#include <sys/conf.h> 51#include <sys/signalvar.h> 52#include <sys/time.h> 53#include <sys/eventhandler.h> 54 55#include <machine/bus_memio.h> 56#include <machine/bus.h> 57#include <machine/resource.h> 58 59#include <dev/aac/aacreg.h> 60#include <dev/aac/aac_ioctl.h> 61#include <dev/aac/aacvar.h> 62#include <dev/aac/aac_tables.h> 63 64static void aac_startup(void *arg); 65static void aac_add_container(struct aac_softc *sc, 66 struct aac_mntinforesp *mir, int f); 67static void aac_get_bus_info(struct aac_softc *sc); 68 69/* Command Processing */ 70static void aac_timeout(struct aac_softc *sc); 71static int aac_map_command(struct aac_command *cm); 72static void aac_complete(void *context, int pending); 73static int aac_bio_command(struct aac_softc *sc, struct aac_command **cmp); 74static void aac_bio_complete(struct aac_command *cm); 75static int aac_wait_command(struct aac_command *cm, int timeout); 76static void aac_command_thread(struct aac_softc *sc); 77 78/* Command Buffer Management */ 79static void aac_map_command_sg(void *arg, bus_dma_segment_t *segs, 80 int nseg, int error); 81static void aac_map_command_helper(void *arg, bus_dma_segment_t *segs, 82 int nseg, int error); 83static int aac_alloc_commands(struct aac_softc *sc); 84static void aac_free_commands(struct aac_softc *sc); 85static void aac_unmap_command(struct aac_command *cm); 86 87/* Hardware Interface */ 88static void aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, 89 int error); 90static int aac_check_firmware(struct aac_softc *sc); 91static int aac_init(struct aac_softc *sc); 92static int aac_sync_command(struct aac_softc *sc, u_int32_t command, 93 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, 94 u_int32_t arg3, u_int32_t *sp); 95static int aac_enqueue_fib(struct aac_softc *sc, int queue, 96 struct aac_command *cm); 97static int aac_dequeue_fib(struct aac_softc *sc, int queue, 98 u_int32_t *fib_size, struct aac_fib **fib_addr); 99static int aac_enqueue_response(struct aac_softc *sc, int queue, 100 struct aac_fib *fib); 101 102/* Falcon/PPC interface */ 103static int aac_fa_get_fwstatus(struct aac_softc *sc); 104static void aac_fa_qnotify(struct aac_softc *sc, int qbit); 105static int aac_fa_get_istatus(struct aac_softc *sc); 106static void aac_fa_clear_istatus(struct aac_softc *sc, int mask); 107static void aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command, 108 u_int32_t arg0, u_int32_t arg1, 109 u_int32_t arg2, u_int32_t arg3); 110static int aac_fa_get_mailbox(struct aac_softc *sc, int mb); 111static void aac_fa_set_interrupts(struct aac_softc *sc, int enable); 112 113struct aac_interface aac_fa_interface = { 114 aac_fa_get_fwstatus, 115 aac_fa_qnotify, 116 aac_fa_get_istatus, 117 aac_fa_clear_istatus, 118 aac_fa_set_mailbox, 119 aac_fa_get_mailbox, 120 aac_fa_set_interrupts 121}; 122 123/* StrongARM interface */ 124static int aac_sa_get_fwstatus(struct aac_softc *sc); 125static void aac_sa_qnotify(struct aac_softc *sc, int qbit); 126static int aac_sa_get_istatus(struct aac_softc *sc); 127static void aac_sa_clear_istatus(struct aac_softc *sc, int mask); 128static void aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 129 u_int32_t arg0, u_int32_t arg1, 130 u_int32_t arg2, u_int32_t arg3); 131static int aac_sa_get_mailbox(struct aac_softc *sc, int mb); 132static void aac_sa_set_interrupts(struct aac_softc *sc, int enable); 133 134struct aac_interface aac_sa_interface = { 135 aac_sa_get_fwstatus, 136 aac_sa_qnotify, 137 aac_sa_get_istatus, 138 aac_sa_clear_istatus, 139 aac_sa_set_mailbox, 140 aac_sa_get_mailbox, 141 aac_sa_set_interrupts 142}; 143 144/* i960Rx interface */ 145static int aac_rx_get_fwstatus(struct aac_softc *sc); 146static void aac_rx_qnotify(struct aac_softc *sc, int qbit); 147static int aac_rx_get_istatus(struct aac_softc *sc); 148static void aac_rx_clear_istatus(struct aac_softc *sc, int mask); 149static void aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 150 u_int32_t arg0, u_int32_t arg1, 151 u_int32_t arg2, u_int32_t arg3); 152static int aac_rx_get_mailbox(struct aac_softc *sc, int mb); 153static void aac_rx_set_interrupts(struct aac_softc *sc, int enable); 154 155struct aac_interface aac_rx_interface = { 156 aac_rx_get_fwstatus, 157 aac_rx_qnotify, 158 aac_rx_get_istatus, 159 aac_rx_clear_istatus, 160 aac_rx_set_mailbox, 161 aac_rx_get_mailbox, 162 aac_rx_set_interrupts 163}; 164 165/* Debugging and Diagnostics */ 166static void aac_describe_controller(struct aac_softc *sc); 167static char *aac_describe_code(struct aac_code_lookup *table, 168 u_int32_t code); 169 170/* Management Interface */ 171static d_open_t aac_open; 172static d_close_t aac_close; 173static d_ioctl_t aac_ioctl; 174static d_poll_t aac_poll; 175static int aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib); 176static void aac_handle_aif(struct aac_softc *sc, 177 struct aac_fib *fib); 178static int aac_rev_check(struct aac_softc *sc, caddr_t udata); 179static int aac_getnext_aif(struct aac_softc *sc, caddr_t arg); 180static int aac_return_aif(struct aac_softc *sc, caddr_t uptr); 181static int aac_query_disk(struct aac_softc *sc, caddr_t uptr); 182 183#define AAC_CDEV_MAJOR 150 184 185static struct cdevsw aac_cdevsw = { 186 .d_open = aac_open, 187 .d_close = aac_close, 188 .d_ioctl = aac_ioctl, 189 .d_poll = aac_poll, 190 .d_name = "aac", 191 .d_maj = AAC_CDEV_MAJOR, 192}; 193 194MALLOC_DEFINE(M_AACBUF, "aacbuf", "Buffers for the AAC driver"); 195 196/* sysctl node */ 197SYSCTL_NODE(_hw, OID_AUTO, aac, CTLFLAG_RD, 0, "AAC driver parameters"); 198 199/* 200 * Device Interface 201 */ 202 203/* 204 * Initialise the controller and softc 205 */ 206int 207aac_attach(struct aac_softc *sc) 208{ 209 int error, unit; 210 211 debug_called(1); 212 213 /* 214 * Initialise per-controller queues. 215 */ 216 aac_initq_free(sc); 217 aac_initq_ready(sc); 218 aac_initq_busy(sc); 219 aac_initq_bio(sc); 220 221 /* 222 * Initialise command-completion task. 223 */ 224 TASK_INIT(&sc->aac_task_complete, 0, aac_complete, sc); 225 226 /* disable interrupts before we enable anything */ 227 AAC_MASK_INTERRUPTS(sc); 228 229 /* mark controller as suspended until we get ourselves organised */ 230 sc->aac_state |= AAC_STATE_SUSPEND; 231 232 /* 233 * Check that the firmware on the card is supported. 234 */ 235 if ((error = aac_check_firmware(sc)) != 0) 236 return(error); 237 238 /* 239 * Initialize locks 240 */ 241 AAC_LOCK_INIT(&sc->aac_sync_lock, "AAC sync FIB lock"); 242 AAC_LOCK_INIT(&sc->aac_aifq_lock, "AAC AIF lock"); 243 AAC_LOCK_INIT(&sc->aac_io_lock, "AAC I/O lock"); 244 AAC_LOCK_INIT(&sc->aac_container_lock, "AAC container lock"); 245 TAILQ_INIT(&sc->aac_container_tqh); 246 247 248 /* 249 * Initialise the adapter. 250 */ 251 if ((error = aac_init(sc)) != 0) 252 return(error); 253 254 /* 255 * Print a little information about the controller. 256 */ 257 aac_describe_controller(sc); 258 259 /* 260 * Register to probe our containers later. 261 */ 262 sc->aac_ich.ich_func = aac_startup; 263 sc->aac_ich.ich_arg = sc; 264 if (config_intrhook_establish(&sc->aac_ich) != 0) { 265 device_printf(sc->aac_dev, 266 "can't establish configuration hook\n"); 267 return(ENXIO); 268 } 269 270 /* 271 * Make the control device. 272 */ 273 unit = device_get_unit(sc->aac_dev); 274 sc->aac_dev_t = make_dev(&aac_cdevsw, unit, UID_ROOT, GID_OPERATOR, 275 0640, "aac%d", unit); 276 (void)make_dev_alias(sc->aac_dev_t, "afa%d", unit); 277 (void)make_dev_alias(sc->aac_dev_t, "hpn%d", unit); 278 sc->aac_dev_t->si_drv1 = sc; 279 280 /* Create the AIF thread */ 281 if (kthread_create((void(*)(void *))aac_command_thread, sc, 282 &sc->aifthread, 0, 0, "aac%daif", unit)) 283 panic("Could not create AIF thread\n"); 284 285 /* Register the shutdown method to only be called post-dump */ 286 if ((sc->eh = EVENTHANDLER_REGISTER(shutdown_final, aac_shutdown, 287 sc->aac_dev, SHUTDOWN_PRI_DEFAULT)) == NULL) 288 device_printf(sc->aac_dev, 289 "shutdown event registration failed\n"); 290 291 /* Register with CAM for the non-DASD devices */ 292 if ((sc->flags & AAC_FLAGS_ENABLE_CAM) != 0) { 293 TAILQ_INIT(&sc->aac_sim_tqh); 294 aac_get_bus_info(sc); 295 } 296 297 return(0); 298} 299 300/* 301 * Probe for containers, create disks. 302 */ 303static void 304aac_startup(void *arg) 305{ 306 struct aac_softc *sc; 307 struct aac_fib *fib; 308 struct aac_mntinfo *mi; 309 struct aac_mntinforesp *mir = NULL; 310 int count = 0, i = 0; 311 312 debug_called(1); 313 314 sc = (struct aac_softc *)arg; 315 316 /* disconnect ourselves from the intrhook chain */ 317 config_intrhook_disestablish(&sc->aac_ich); 318 319 aac_alloc_sync_fib(sc, &fib, 0); 320 mi = (struct aac_mntinfo *)&fib->data[0]; 321 322 /* loop over possible containers */ 323 do { 324 /* request information on this container */ 325 bzero(mi, sizeof(struct aac_mntinfo)); 326 mi->Command = VM_NameServe; 327 mi->MntType = FT_FILESYS; 328 mi->MntCount = i; 329 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 330 sizeof(struct aac_mntinfo))) { 331 printf("error probing container %d", i); 332 continue; 333 } 334 335 mir = (struct aac_mntinforesp *)&fib->data[0]; 336 /* XXX Need to check if count changed */ 337 count = mir->MntRespCount; 338 aac_add_container(sc, mir, 0); 339 i++; 340 } while ((i < count) && (i < AAC_MAX_CONTAINERS)); 341 342 aac_release_sync_fib(sc); 343 344 /* poke the bus to actually attach the child devices */ 345 if (bus_generic_attach(sc->aac_dev)) 346 device_printf(sc->aac_dev, "bus_generic_attach failed\n"); 347 348 /* mark the controller up */ 349 sc->aac_state &= ~AAC_STATE_SUSPEND; 350 351 /* enable interrupts now */ 352 AAC_UNMASK_INTERRUPTS(sc); 353} 354 355/* 356 * Create a device to respresent a new container 357 */ 358static void 359aac_add_container(struct aac_softc *sc, struct aac_mntinforesp *mir, int f) 360{ 361 struct aac_container *co; 362 device_t child; 363 364 /* 365 * Check container volume type for validity. Note that many of 366 * the possible types may never show up. 367 */ 368 if ((mir->Status == ST_OK) && (mir->MntTable[0].VolType != CT_NONE)) { 369 co = (struct aac_container *)malloc(sizeof *co, M_AACBUF, 370 M_NOWAIT | M_ZERO); 371 if (co == NULL) 372 panic("Out of memory?!\n"); 373 debug(1, "id %x name '%.16s' size %u type %d", 374 mir->MntTable[0].ObjectId, 375 mir->MntTable[0].FileSystemName, 376 mir->MntTable[0].Capacity, mir->MntTable[0].VolType); 377 378 if ((child = device_add_child(sc->aac_dev, "aacd", -1)) == NULL) 379 device_printf(sc->aac_dev, "device_add_child failed\n"); 380 else 381 device_set_ivars(child, co); 382 device_set_desc(child, aac_describe_code(aac_container_types, 383 mir->MntTable[0].VolType)); 384 co->co_disk = child; 385 co->co_found = f; 386 bcopy(&mir->MntTable[0], &co->co_mntobj, 387 sizeof(struct aac_mntobj)); 388 AAC_LOCK_ACQUIRE(&sc->aac_container_lock); 389 TAILQ_INSERT_TAIL(&sc->aac_container_tqh, co, co_link); 390 AAC_LOCK_RELEASE(&sc->aac_container_lock); 391 } 392} 393 394/* 395 * Free all of the resources associated with (sc) 396 * 397 * Should not be called if the controller is active. 398 */ 399void 400aac_free(struct aac_softc *sc) 401{ 402 403 debug_called(1); 404 405 /* remove the control device */ 406 if (sc->aac_dev_t != NULL) 407 destroy_dev(sc->aac_dev_t); 408 409 /* throw away any FIB buffers, discard the FIB DMA tag */ 410 aac_free_commands(sc); 411 if (sc->aac_fib_dmat) 412 bus_dma_tag_destroy(sc->aac_fib_dmat); 413 414 free(sc->aac_commands, M_AACBUF); 415 416 /* destroy the common area */ 417 if (sc->aac_common) { 418 bus_dmamap_unload(sc->aac_common_dmat, sc->aac_common_dmamap); 419 bus_dmamem_free(sc->aac_common_dmat, sc->aac_common, 420 sc->aac_common_dmamap); 421 } 422 if (sc->aac_common_dmat) 423 bus_dma_tag_destroy(sc->aac_common_dmat); 424 425 /* disconnect the interrupt handler */ 426 if (sc->aac_intr) 427 bus_teardown_intr(sc->aac_dev, sc->aac_irq, sc->aac_intr); 428 if (sc->aac_irq != NULL) 429 bus_release_resource(sc->aac_dev, SYS_RES_IRQ, sc->aac_irq_rid, 430 sc->aac_irq); 431 432 /* destroy data-transfer DMA tag */ 433 if (sc->aac_buffer_dmat) 434 bus_dma_tag_destroy(sc->aac_buffer_dmat); 435 436 /* destroy the parent DMA tag */ 437 if (sc->aac_parent_dmat) 438 bus_dma_tag_destroy(sc->aac_parent_dmat); 439 440 /* release the register window mapping */ 441 if (sc->aac_regs_resource != NULL) 442 bus_release_resource(sc->aac_dev, SYS_RES_MEMORY, 443 sc->aac_regs_rid, sc->aac_regs_resource); 444} 445 446/* 447 * Disconnect from the controller completely, in preparation for unload. 448 */ 449int 450aac_detach(device_t dev) 451{ 452 struct aac_softc *sc; 453 struct aac_container *co; 454 struct aac_sim *sim; 455 int error; 456 457 debug_called(1); 458 459 sc = device_get_softc(dev); 460 461 if (sc->aac_state & AAC_STATE_OPEN) 462 return(EBUSY); 463 464 /* Remove the child containers */ 465 while ((co = TAILQ_FIRST(&sc->aac_container_tqh)) != NULL) { 466 error = device_delete_child(dev, co->co_disk); 467 if (error) 468 return (error); 469 TAILQ_REMOVE(&sc->aac_container_tqh, co, co_link); 470 free(co, M_AACBUF); 471 } 472 473 /* Remove the CAM SIMs */ 474 while ((sim = TAILQ_FIRST(&sc->aac_sim_tqh)) != NULL) { 475 TAILQ_REMOVE(&sc->aac_sim_tqh, sim, sim_link); 476 error = device_delete_child(dev, sim->sim_dev); 477 if (error) 478 return (error); 479 free(sim, M_AACBUF); 480 } 481 482 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) { 483 sc->aifflags |= AAC_AIFFLAGS_EXIT; 484 wakeup(sc->aifthread); 485 tsleep(sc->aac_dev, PUSER | PCATCH, "aacdch", 30 * hz); 486 } 487 488 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) 489 panic("Cannot shutdown AIF thread\n"); 490 491 if ((error = aac_shutdown(dev))) 492 return(error); 493 494 EVENTHANDLER_DEREGISTER(shutdown_final, sc->eh); 495 496 aac_free(sc); 497 498 return(0); 499} 500 501/* 502 * Bring the controller down to a dormant state and detach all child devices. 503 * 504 * This function is called before detach or system shutdown. 505 * 506 * Note that we can assume that the bioq on the controller is empty, as we won't 507 * allow shutdown if any device is open. 508 */ 509int 510aac_shutdown(device_t dev) 511{ 512 struct aac_softc *sc; 513 struct aac_fib *fib; 514 struct aac_close_command *cc; 515 516 debug_called(1); 517 518 sc = device_get_softc(dev); 519 520 sc->aac_state |= AAC_STATE_SUSPEND; 521 522 /* 523 * Send a Container shutdown followed by a HostShutdown FIB to the 524 * controller to convince it that we don't want to talk to it anymore. 525 * We've been closed and all I/O completed already 526 */ 527 device_printf(sc->aac_dev, "shutting down controller..."); 528 529 aac_alloc_sync_fib(sc, &fib, AAC_SYNC_LOCK_FORCE); 530 cc = (struct aac_close_command *)&fib->data[0]; 531 532 bzero(cc, sizeof(struct aac_close_command)); 533 cc->Command = VM_CloseAll; 534 cc->ContainerId = 0xffffffff; 535 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 536 sizeof(struct aac_close_command))) 537 printf("FAILED.\n"); 538 else 539 printf("done\n"); 540#if 0 541 else { 542 fib->data[0] = 0; 543 /* 544 * XXX Issuing this command to the controller makes it shut down 545 * but also keeps it from coming back up without a reset of the 546 * PCI bus. This is not desirable if you are just unloading the 547 * driver module with the intent to reload it later. 548 */ 549 if (aac_sync_fib(sc, FsaHostShutdown, AAC_FIBSTATE_SHUTDOWN, 550 fib, 1)) { 551 printf("FAILED.\n"); 552 } else { 553 printf("done.\n"); 554 } 555 } 556#endif 557 558 AAC_MASK_INTERRUPTS(sc); 559 560 return(0); 561} 562 563/* 564 * Bring the controller to a quiescent state, ready for system suspend. 565 */ 566int 567aac_suspend(device_t dev) 568{ 569 struct aac_softc *sc; 570 571 debug_called(1); 572 573 sc = device_get_softc(dev); 574 575 sc->aac_state |= AAC_STATE_SUSPEND; 576 577 AAC_MASK_INTERRUPTS(sc); 578 return(0); 579} 580 581/* 582 * Bring the controller back to a state ready for operation. 583 */ 584int 585aac_resume(device_t dev) 586{ 587 struct aac_softc *sc; 588 589 debug_called(1); 590 591 sc = device_get_softc(dev); 592 593 sc->aac_state &= ~AAC_STATE_SUSPEND; 594 AAC_UNMASK_INTERRUPTS(sc); 595 return(0); 596} 597 598/* 599 * Take an interrupt. 600 */ 601void 602aac_intr(void *arg) 603{ 604 struct aac_softc *sc; 605 u_int32_t *resp_queue; 606 u_int16_t reason; 607 608 debug_called(2); 609 610 sc = (struct aac_softc *)arg; 611 612 /* 613 * Optimize the common case of adapter response interrupts. 614 * We must read from the card prior to processing the responses 615 * to ensure the clear is flushed prior to accessing the queues. 616 * Reading the queues from local memory might save us a PCI read. 617 */ 618 resp_queue = sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE]; 619 if (resp_queue[AAC_PRODUCER_INDEX] != resp_queue[AAC_CONSUMER_INDEX]) 620 reason = AAC_DB_RESPONSE_READY; 621 else 622 reason = AAC_GET_ISTATUS(sc); 623 AAC_CLEAR_ISTATUS(sc, reason); 624 (void)AAC_GET_ISTATUS(sc); 625 626 /* It's not ok to return here because of races with the previous step */ 627 if (reason & AAC_DB_RESPONSE_READY) 628 /* handle completion processing */ 629 taskqueue_enqueue(taskqueue_swi, &sc->aac_task_complete); 630 631 /* controller wants to talk to the log */ 632 if (reason & AAC_DB_PRINTF) { 633 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) { 634 sc->aifflags |= AAC_AIFFLAGS_PRINTF; 635 } else 636 aac_print_printf(sc); 637 } 638 639 /* controller has a message for us? */ 640 if (reason & AAC_DB_COMMAND_READY) { 641 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) { 642 sc->aifflags |= AAC_AIFFLAGS_AIF; 643 } else { 644 /* 645 * XXX If the kthread is dead and we're at this point, 646 * there are bigger problems than just figuring out 647 * what to do with an AIF. 648 */ 649 } 650 651 } 652 653 if ((sc->aifflags & AAC_AIFFLAGS_PENDING) != 0) 654 /* XXX Should this be done with cv_signal? */ 655 wakeup(sc->aifthread); 656} 657 658/* 659 * Command Processing 660 */ 661 662/* 663 * Start as much queued I/O as possible on the controller 664 */ 665void 666aac_startio(struct aac_softc *sc) 667{ 668 struct aac_command *cm; 669 670 debug_called(2); 671 672 if (sc->flags & AAC_QUEUE_FRZN) 673 return; 674 675 for (;;) { 676 /* 677 * Try to get a command that's been put off for lack of 678 * resources 679 */ 680 cm = aac_dequeue_ready(sc); 681 682 /* 683 * Try to build a command off the bio queue (ignore error 684 * return) 685 */ 686 if (cm == NULL) 687 aac_bio_command(sc, &cm); 688 689 /* nothing to do? */ 690 if (cm == NULL) 691 break; 692 693 /* try to give the command to the controller */ 694 if (aac_map_command(cm) == EBUSY) { 695 /* put it on the ready queue for later */ 696 aac_requeue_ready(cm); 697 break; 698 } 699 } 700} 701 702/* 703 * Deliver a command to the controller; allocate controller resources at the 704 * last moment when possible. 705 */ 706static int 707aac_map_command(struct aac_command *cm) 708{ 709 struct aac_softc *sc; 710 int error; 711 712 debug_called(2); 713 714 sc = cm->cm_sc; 715 error = 0; 716 717 /* don't map more than once */ 718 if (cm->cm_flags & AAC_CMD_MAPPED) 719 return (0); 720 721 if (cm->cm_datalen != 0) { 722 error = bus_dmamap_load(sc->aac_buffer_dmat, cm->cm_datamap, 723 cm->cm_data, cm->cm_datalen, 724 aac_map_command_sg, cm, 0); 725 if (error == EINPROGRESS) { 726 debug(1, "freezing queue\n"); 727 sc->flags |= AAC_QUEUE_FRZN; 728 error = 0; 729 } 730 } 731 return (error); 732} 733 734/* 735 * Handle notification of one or more FIBs coming from the controller. 736 */ 737static void 738aac_command_thread(struct aac_softc *sc) 739{ 740 struct aac_fib *fib; 741 u_int32_t fib_size; 742 int size; 743 744 debug_called(2); 745 746 sc->aifflags |= AAC_AIFFLAGS_RUNNING; 747 748 while (!(sc->aifflags & AAC_AIFFLAGS_EXIT)) { 749 if ((sc->aifflags & AAC_AIFFLAGS_PENDING) == 0) 750 tsleep(sc->aifthread, PRIBIO, "aifthd", 751 AAC_PERIODIC_INTERVAL * hz); 752 753 if ((sc->aifflags & AAC_AIFFLAGS_PENDING) == 0) 754 aac_timeout(sc); 755 756 /* Check the hardware printf message buffer */ 757 if ((sc->aifflags & AAC_AIFFLAGS_PRINTF) != 0) { 758 sc->aifflags &= ~AAC_AIFFLAGS_PRINTF; 759 aac_print_printf(sc); 760 } 761 762 /* See if any FIBs need to be allocated */ 763 if ((sc->aifflags & AAC_AIFFLAGS_ALLOCFIBS) != 0) { 764 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 765 aac_alloc_commands(sc); 766 sc->aifflags &= ~AAC_AIFFLAGS_ALLOCFIBS; 767 AAC_LOCK_RELEASE(&sc->aac_io_lock); 768 } 769 770 /* While we're here, check to see if any commands are stuck */ 771 while (sc->aifflags & AAC_AIFFLAGS_AIF) { 772 if (aac_dequeue_fib(sc, AAC_HOST_NORM_CMD_QUEUE, 773 &fib_size, &fib)) { 774 sc->aifflags &= ~AAC_AIFFLAGS_AIF; 775 break; /* nothing to do */ 776 } 777 778 AAC_PRINT_FIB(sc, fib); 779 780 switch (fib->Header.Command) { 781 case AifRequest: 782 aac_handle_aif(sc, fib); 783 break; 784 default: 785 device_printf(sc->aac_dev, "unknown command " 786 "from controller\n"); 787 break; 788 } 789 790 if ((fib->Header.XferState == 0) || 791 (fib->Header.StructType != AAC_FIBTYPE_TFIB)) 792 break; 793 794 /* Return the AIF to the controller. */ 795 if (fib->Header.XferState & AAC_FIBSTATE_FROMADAP) { 796 fib->Header.XferState |= AAC_FIBSTATE_DONEHOST; 797 *(AAC_FSAStatus*)fib->data = ST_OK; 798 799 /* XXX Compute the Size field? */ 800 size = fib->Header.Size; 801 if (size > sizeof(struct aac_fib)) { 802 size = sizeof(struct aac_fib); 803 fib->Header.Size = size; 804 } 805 /* 806 * Since we did not generate this command, it 807 * cannot go through the normal 808 * enqueue->startio chain. 809 */ 810 aac_enqueue_response(sc, 811 AAC_ADAP_NORM_RESP_QUEUE, 812 fib); 813 } 814 } 815 } 816 sc->aifflags &= ~AAC_AIFFLAGS_RUNNING; 817 wakeup(sc->aac_dev); 818 819 mtx_lock(&Giant); 820 kthread_exit(0); 821} 822 823/* 824 * Process completed commands. 825 */ 826static void 827aac_complete(void *context, int pending) 828{ 829 struct aac_softc *sc; 830 struct aac_command *cm; 831 struct aac_fib *fib; 832 u_int32_t fib_size; 833 834 debug_called(2); 835 836 sc = (struct aac_softc *)context; 837 838 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 839 840 /* pull completed commands off the queue */ 841 for (;;) { 842 /* look for completed FIBs on our queue */ 843 if (aac_dequeue_fib(sc, AAC_HOST_NORM_RESP_QUEUE, &fib_size, 844 &fib)) 845 break; /* nothing to do */ 846 847 /* get the command, unmap and queue for later processing */ 848 cm = sc->aac_commands + fib->Header.SenderData; 849 if (cm == NULL) { 850 AAC_PRINT_FIB(sc, fib); 851 break; 852 } 853 854 aac_remove_busy(cm); 855 aac_unmap_command(cm); /* XXX defer? */ 856 cm->cm_flags |= AAC_CMD_COMPLETED; 857 858 /* is there a completion handler? */ 859 if (cm->cm_complete != NULL) { 860 cm->cm_complete(cm); 861 } else { 862 /* assume that someone is sleeping on this command */ 863 wakeup(cm); 864 } 865 } 866 867 /* see if we can start some more I/O */ 868 sc->flags &= ~AAC_QUEUE_FRZN; 869 aac_startio(sc); 870 871 AAC_LOCK_RELEASE(&sc->aac_io_lock); 872} 873 874/* 875 * Handle a bio submitted from a disk device. 876 */ 877void 878aac_submit_bio(struct bio *bp) 879{ 880 struct aac_disk *ad; 881 struct aac_softc *sc; 882 883 debug_called(2); 884 885 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 886 sc = ad->ad_controller; 887 888 /* queue the BIO and try to get some work done */ 889 aac_enqueue_bio(sc, bp); 890 aac_startio(sc); 891} 892 893/* 894 * Get a bio and build a command to go with it. 895 */ 896static int 897aac_bio_command(struct aac_softc *sc, struct aac_command **cmp) 898{ 899 struct aac_command *cm; 900 struct aac_fib *fib; 901 struct aac_disk *ad; 902 struct bio *bp; 903 904 debug_called(2); 905 906 /* get the resources we will need */ 907 cm = NULL; 908 if ((bp = aac_dequeue_bio(sc)) == NULL) 909 goto fail; 910 if (aac_alloc_command(sc, &cm)) /* get a command */ 911 goto fail; 912 913 /* fill out the command */ 914 cm->cm_data = (void *)bp->bio_data; 915 cm->cm_datalen = bp->bio_bcount; 916 cm->cm_complete = aac_bio_complete; 917 cm->cm_private = bp; 918 cm->cm_timestamp = time_second; 919 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 920 921 /* build the FIB */ 922 fib = cm->cm_fib; 923 fib->Header.Size = sizeof(struct aac_fib_header); 924 fib->Header.XferState = 925 AAC_FIBSTATE_HOSTOWNED | 926 AAC_FIBSTATE_INITIALISED | 927 AAC_FIBSTATE_EMPTY | 928 AAC_FIBSTATE_FROMHOST | 929 AAC_FIBSTATE_REXPECTED | 930 AAC_FIBSTATE_NORM | 931 AAC_FIBSTATE_ASYNC | 932 AAC_FIBSTATE_FAST_RESPONSE; 933 934 /* build the read/write request */ 935 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 936 937 if ((sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 938 fib->Header.Command = ContainerCommand; 939 if (bp->bio_cmd == BIO_READ) { 940 struct aac_blockread *br; 941 br = (struct aac_blockread *)&fib->data[0]; 942 br->Command = VM_CtBlockRead; 943 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 944 br->BlockNumber = bp->bio_pblkno; 945 br->ByteCount = bp->bio_bcount; 946 fib->Header.Size += sizeof(struct aac_blockread); 947 cm->cm_sgtable = &br->SgMap; 948 cm->cm_flags |= AAC_CMD_DATAIN; 949 } else { 950 struct aac_blockwrite *bw; 951 bw = (struct aac_blockwrite *)&fib->data[0]; 952 bw->Command = VM_CtBlockWrite; 953 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 954 bw->BlockNumber = bp->bio_pblkno; 955 bw->ByteCount = bp->bio_bcount; 956 bw->Stable = CUNSTABLE; 957 fib->Header.Size += sizeof(struct aac_blockwrite); 958 cm->cm_flags |= AAC_CMD_DATAOUT; 959 cm->cm_sgtable = &bw->SgMap; 960 } 961 } else { 962 fib->Header.Command = ContainerCommand64; 963 if (bp->bio_cmd == BIO_READ) { 964 struct aac_blockread64 *br; 965 br = (struct aac_blockread64 *)&fib->data[0]; 966 br->Command = VM_CtHostRead64; 967 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 968 br->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 969 br->BlockNumber = bp->bio_pblkno; 970 br->Pad = 0; 971 br->Flags = 0; 972 fib->Header.Size += sizeof(struct aac_blockread64); 973 cm->cm_flags |= AAC_CMD_DATAOUT; 974 (struct aac_sg_table64 *)cm->cm_sgtable = &br->SgMap64; 975 } else { 976 struct aac_blockwrite64 *bw; 977 bw = (struct aac_blockwrite64 *)&fib->data[0]; 978 bw->Command = VM_CtHostWrite64; 979 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 980 bw->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 981 bw->BlockNumber = bp->bio_pblkno; 982 bw->Pad = 0; 983 bw->Flags = 0; 984 fib->Header.Size += sizeof(struct aac_blockwrite64); 985 cm->cm_flags |= AAC_CMD_DATAIN; 986 (struct aac_sg_table64 *)cm->cm_sgtable = &bw->SgMap64; 987 } 988 } 989 990 *cmp = cm; 991 return(0); 992 993fail: 994 if (bp != NULL) 995 aac_enqueue_bio(sc, bp); 996 if (cm != NULL) 997 aac_release_command(cm); 998 return(ENOMEM); 999} 1000 1001/* 1002 * Handle a bio-instigated command that has been completed. 1003 */ 1004static void 1005aac_bio_complete(struct aac_command *cm) 1006{ 1007 struct aac_blockread_response *brr; 1008 struct aac_blockwrite_response *bwr; 1009 struct bio *bp; 1010 AAC_FSAStatus status; 1011 1012 /* fetch relevant status and then release the command */ 1013 bp = (struct bio *)cm->cm_private; 1014 if (bp->bio_cmd == BIO_READ) { 1015 brr = (struct aac_blockread_response *)&cm->cm_fib->data[0]; 1016 status = brr->Status; 1017 } else { 1018 bwr = (struct aac_blockwrite_response *)&cm->cm_fib->data[0]; 1019 status = bwr->Status; 1020 } 1021 aac_release_command(cm); 1022 1023 /* fix up the bio based on status */ 1024 if (status == ST_OK) { 1025 bp->bio_resid = 0; 1026 } else { 1027 bp->bio_error = EIO; 1028 bp->bio_flags |= BIO_ERROR; 1029 /* pass an error string out to the disk layer */ 1030 bp->bio_driver1 = aac_describe_code(aac_command_status_table, 1031 status); 1032 } 1033 aac_biodone(bp); 1034} 1035 1036/* 1037 * Submit a command to the controller, return when it completes. 1038 * XXX This is very dangerous! If the card has gone out to lunch, we could 1039 * be stuck here forever. At the same time, signals are not caught 1040 * because there is a risk that a signal could wakeup the tsleep before 1041 * the card has a chance to complete the command. The passed in timeout 1042 * is ignored for the same reason. Since there is no way to cancel a 1043 * command in progress, we should probably create a 'dead' queue where 1044 * commands go that have been interrupted/timed-out/etc, that keeps them 1045 * out of the free pool. That way, if the card is just slow, it won't 1046 * spam the memory of a command that has been recycled. 1047 */ 1048static int 1049aac_wait_command(struct aac_command *cm, int timeout) 1050{ 1051 struct aac_softc *sc; 1052 int error = 0; 1053 1054 debug_called(2); 1055 1056 sc = cm->cm_sc; 1057 1058 /* Put the command on the ready queue and get things going */ 1059 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 1060 aac_enqueue_ready(cm); 1061 aac_startio(sc); 1062 while (!(cm->cm_flags & AAC_CMD_COMPLETED) && (error != EWOULDBLOCK)) { 1063 error = msleep(cm, &sc->aac_io_lock, PRIBIO, "aacwait", 0); 1064 } 1065 return(error); 1066} 1067 1068/* 1069 *Command Buffer Management 1070 */ 1071 1072/* 1073 * Allocate a command. 1074 */ 1075int 1076aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp) 1077{ 1078 struct aac_command *cm; 1079 1080 debug_called(3); 1081 1082 if ((cm = aac_dequeue_free(sc)) == NULL) { 1083 if (sc->total_fibs < sc->aac_max_fibs) { 1084 sc->aifflags |= AAC_AIFFLAGS_ALLOCFIBS; 1085 wakeup(sc->aifthread); 1086 } 1087 return (EBUSY); 1088 } 1089 1090 *cmp = cm; 1091 return(0); 1092} 1093 1094/* 1095 * Release a command back to the freelist. 1096 */ 1097void 1098aac_release_command(struct aac_command *cm) 1099{ 1100 debug_called(3); 1101 1102 /* (re)initialise the command/FIB */ 1103 cm->cm_sgtable = NULL; 1104 cm->cm_flags = 0; 1105 cm->cm_complete = NULL; 1106 cm->cm_private = NULL; 1107 cm->cm_fib->Header.XferState = AAC_FIBSTATE_EMPTY; 1108 cm->cm_fib->Header.StructType = AAC_FIBTYPE_TFIB; 1109 cm->cm_fib->Header.Flags = 0; 1110 cm->cm_fib->Header.SenderSize = sizeof(struct aac_fib); 1111 1112 /* 1113 * These are duplicated in aac_start to cover the case where an 1114 * intermediate stage may have destroyed them. They're left 1115 * initialised here for debugging purposes only. 1116 */ 1117 cm->cm_fib->Header.ReceiverFibAddress = (u_int32_t)cm->cm_fibphys; 1118 cm->cm_fib->Header.SenderData = 0; 1119 1120 aac_enqueue_free(cm); 1121} 1122 1123/* 1124 * Map helper for command/FIB allocation. 1125 */ 1126static void 1127aac_map_command_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1128{ 1129 uint32_t *fibphys; 1130 1131 fibphys = (uint32_t *)arg; 1132 1133 debug_called(3); 1134 1135 *fibphys = segs[0].ds_addr; 1136} 1137 1138/* 1139 * Allocate and initialise commands/FIBs for this adapter. 1140 */ 1141static int 1142aac_alloc_commands(struct aac_softc *sc) 1143{ 1144 struct aac_command *cm; 1145 struct aac_fibmap *fm; 1146 uint32_t fibphys; 1147 int i, error; 1148 1149 debug_called(2); 1150 1151 if (sc->total_fibs + AAC_FIB_COUNT > sc->aac_max_fibs) 1152 return (ENOMEM); 1153 1154 fm = malloc(sizeof(struct aac_fibmap), M_AACBUF, M_NOWAIT|M_ZERO); 1155 if (fm == NULL) 1156 return (ENOMEM); 1157 1158 /* allocate the FIBs in DMAable memory and load them */ 1159 if (bus_dmamem_alloc(sc->aac_fib_dmat, (void **)&fm->aac_fibs, 1160 BUS_DMA_NOWAIT, &fm->aac_fibmap)) { 1161 device_printf(sc->aac_dev, 1162 "Not enough contiguous memory available.\n"); 1163 free(fm, M_AACBUF); 1164 return (ENOMEM); 1165 } 1166 1167 /* Ignore errors since this doesn't bounce */ 1168 (void)bus_dmamap_load(sc->aac_fib_dmat, fm->aac_fibmap, fm->aac_fibs, 1169 AAC_FIB_COUNT * sizeof(struct aac_fib), 1170 aac_map_command_helper, &fibphys, 0); 1171 1172 /* initialise constant fields in the command structure */ 1173 bzero(fm->aac_fibs, AAC_FIB_COUNT * sizeof(struct aac_fib)); 1174 for (i = 0; i < AAC_FIB_COUNT; i++) { 1175 cm = sc->aac_commands + sc->total_fibs; 1176 fm->aac_commands = cm; 1177 cm->cm_sc = sc; 1178 cm->cm_fib = fm->aac_fibs + i; 1179 cm->cm_fibphys = fibphys + (i * sizeof(struct aac_fib)); 1180 cm->cm_index = sc->total_fibs; 1181 1182 if ((error = bus_dmamap_create(sc->aac_buffer_dmat, 0, 1183 &cm->cm_datamap)) == 0) 1184 aac_release_command(cm); 1185 else 1186 break; 1187 sc->total_fibs++; 1188 } 1189 1190 if (i > 0) { 1191 TAILQ_INSERT_TAIL(&sc->aac_fibmap_tqh, fm, fm_link); 1192 debug(1, "total_fibs= %d\n", sc->total_fibs); 1193 return (0); 1194 } 1195 1196 bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap); 1197 bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap); 1198 free(fm, M_AACBUF); 1199 return (ENOMEM); 1200} 1201 1202/* 1203 * Free FIBs owned by this adapter. 1204 */ 1205static void 1206aac_free_commands(struct aac_softc *sc) 1207{ 1208 struct aac_fibmap *fm; 1209 struct aac_command *cm; 1210 int i; 1211 1212 debug_called(1); 1213 1214 while ((fm = TAILQ_FIRST(&sc->aac_fibmap_tqh)) != NULL) { 1215 1216 TAILQ_REMOVE(&sc->aac_fibmap_tqh, fm, fm_link); 1217 /* 1218 * We check against total_fibs to handle partially 1219 * allocated blocks. 1220 */ 1221 for (i = 0; i < AAC_FIB_COUNT && sc->total_fibs--; i++) { 1222 cm = fm->aac_commands + i; 1223 bus_dmamap_destroy(sc->aac_buffer_dmat, cm->cm_datamap); 1224 } 1225 bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap); 1226 bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap); 1227 free(fm, M_AACBUF); 1228 } 1229} 1230 1231/* 1232 * Command-mapping helper function - populate this command's s/g table. 1233 */ 1234static void 1235aac_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1236{ 1237 struct aac_softc *sc; 1238 struct aac_command *cm; 1239 struct aac_fib *fib; 1240 int i; 1241 1242 debug_called(3); 1243 1244 cm = (struct aac_command *)arg; 1245 sc = cm->cm_sc; 1246 fib = cm->cm_fib; 1247 1248 /* copy into the FIB */ 1249 if (cm->cm_sgtable != NULL) { 1250 if ((cm->cm_sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 1251 struct aac_sg_table *sg; 1252 sg = cm->cm_sgtable; 1253 sg->SgCount = nseg; 1254 for (i = 0; i < nseg; i++) { 1255 sg->SgEntry[i].SgAddress = segs[i].ds_addr; 1256 sg->SgEntry[i].SgByteCount = segs[i].ds_len; 1257 } 1258 /* update the FIB size for the s/g count */ 1259 fib->Header.Size += nseg * sizeof(struct aac_sg_entry); 1260 } else { 1261 struct aac_sg_table64 *sg; 1262 sg = (struct aac_sg_table64 *)cm->cm_sgtable; 1263 sg->SgCount = nseg; 1264 for (i = 0; i < nseg; i++) { 1265 sg->SgEntry64[i].SgAddress = segs[i].ds_addr; 1266 sg->SgEntry64[i].SgByteCount = segs[i].ds_len; 1267 } 1268 /* update the FIB size for the s/g count */ 1269 fib->Header.Size += nseg*sizeof(struct aac_sg_entry64); 1270 } 1271 } 1272 1273 /* Fix up the address values in the FIB. Use the command array index 1274 * instead of a pointer since these fields are only 32 bits. Shift 1275 * the SenderFibAddress over to make room for the fast response bit. 1276 */ 1277 cm->cm_fib->Header.SenderFibAddress = (cm->cm_index << 1); 1278 cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys; 1279 1280 /* save a pointer to the command for speedy reverse-lookup */ 1281 cm->cm_fib->Header.SenderData = cm->cm_index; 1282 1283 if (cm->cm_flags & AAC_CMD_DATAIN) 1284 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1285 BUS_DMASYNC_PREREAD); 1286 if (cm->cm_flags & AAC_CMD_DATAOUT) 1287 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1288 BUS_DMASYNC_PREWRITE); 1289 cm->cm_flags |= AAC_CMD_MAPPED; 1290 1291 /* put the FIB on the outbound queue */ 1292 if (aac_enqueue_fib(sc, cm->cm_queue, cm) == EBUSY) 1293 aac_requeue_ready(cm); 1294 1295 return; 1296} 1297 1298/* 1299 * Unmap a command from controller-visible space. 1300 */ 1301static void 1302aac_unmap_command(struct aac_command *cm) 1303{ 1304 struct aac_softc *sc; 1305 1306 debug_called(2); 1307 1308 sc = cm->cm_sc; 1309 1310 if (!(cm->cm_flags & AAC_CMD_MAPPED)) 1311 return; 1312 1313 if (cm->cm_datalen != 0) { 1314 if (cm->cm_flags & AAC_CMD_DATAIN) 1315 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1316 BUS_DMASYNC_POSTREAD); 1317 if (cm->cm_flags & AAC_CMD_DATAOUT) 1318 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1319 BUS_DMASYNC_POSTWRITE); 1320 1321 bus_dmamap_unload(sc->aac_buffer_dmat, cm->cm_datamap); 1322 } 1323 cm->cm_flags &= ~AAC_CMD_MAPPED; 1324} 1325 1326/* 1327 * Hardware Interface 1328 */ 1329 1330/* 1331 * Initialise the adapter. 1332 */ 1333static void 1334aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1335{ 1336 struct aac_softc *sc; 1337 1338 debug_called(1); 1339 1340 sc = (struct aac_softc *)arg; 1341 1342 sc->aac_common_busaddr = segs[0].ds_addr; 1343} 1344 1345static int 1346aac_check_firmware(struct aac_softc *sc) 1347{ 1348 u_int32_t major, minor, options; 1349 1350 debug_called(1); 1351 1352 /* 1353 * Retrieve the firmware version numbers. Dell PERC2/QC cards with 1354 * firmware version 1.x are not compatible with this driver. 1355 */ 1356 if (sc->flags & AAC_FLAGS_PERC2QC) { 1357 if (aac_sync_command(sc, AAC_MONKER_GETKERNVER, 0, 0, 0, 0, 1358 NULL)) { 1359 device_printf(sc->aac_dev, 1360 "Error reading firmware version\n"); 1361 return (EIO); 1362 } 1363 1364 /* These numbers are stored as ASCII! */ 1365 major = (AAC_GET_MAILBOX(sc, 1) & 0xff) - 0x30; 1366 minor = (AAC_GET_MAILBOX(sc, 2) & 0xff) - 0x30; 1367 if (major == 1) { 1368 device_printf(sc->aac_dev, 1369 "Firmware version %d.%d is not supported.\n", 1370 major, minor); 1371 return (EINVAL); 1372 } 1373 } 1374 1375 /* 1376 * Retrieve the capabilities/supported options word so we know what 1377 * work-arounds to enable. 1378 */ 1379 if (aac_sync_command(sc, AAC_MONKER_GETINFO, 0, 0, 0, 0, NULL)) { 1380 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 1381 return (EIO); 1382 } 1383 options = AAC_GET_MAILBOX(sc, 1); 1384 sc->supported_options = options; 1385 1386 if ((options & AAC_SUPPORTED_4GB_WINDOW) != 0 && 1387 (sc->flags & AAC_FLAGS_NO4GB) == 0) 1388 sc->flags |= AAC_FLAGS_4GB_WINDOW; 1389 if (options & AAC_SUPPORTED_NONDASD) 1390 sc->flags |= AAC_FLAGS_ENABLE_CAM; 1391 if ((options & AAC_SUPPORTED_SGMAP_HOST64) != 0 1392 && (sizeof(bus_addr_t) > 4)) { 1393 device_printf(sc->aac_dev, "Enabling 64-bit address support\n"); 1394 sc->flags |= AAC_FLAGS_SG_64BIT; 1395 } 1396 1397 /* Check for broken hardware that does a lower number of commands */ 1398 if ((sc->flags & AAC_FLAGS_256FIBS) == 0) 1399 sc->aac_max_fibs = AAC_MAX_FIBS; 1400 else 1401 sc->aac_max_fibs = 256; 1402 1403 return (0); 1404} 1405 1406static int 1407aac_init(struct aac_softc *sc) 1408{ 1409 struct aac_adapter_init *ip; 1410 time_t then; 1411 u_int32_t code, qoffset; 1412 int error; 1413 1414 debug_called(1); 1415 1416 /* 1417 * First wait for the adapter to come ready. 1418 */ 1419 then = time_second; 1420 do { 1421 code = AAC_GET_FWSTATUS(sc); 1422 if (code & AAC_SELF_TEST_FAILED) { 1423 device_printf(sc->aac_dev, "FATAL: selftest failed\n"); 1424 return(ENXIO); 1425 } 1426 if (code & AAC_KERNEL_PANIC) { 1427 device_printf(sc->aac_dev, 1428 "FATAL: controller kernel panic\n"); 1429 return(ENXIO); 1430 } 1431 if (time_second > (then + AAC_BOOT_TIMEOUT)) { 1432 device_printf(sc->aac_dev, 1433 "FATAL: controller not coming ready, " 1434 "status %x\n", code); 1435 return(ENXIO); 1436 } 1437 } while (!(code & AAC_UP_AND_RUNNING)); 1438 1439 error = ENOMEM; 1440 /* 1441 * Create DMA tag for mapping buffers into controller-addressable space. 1442 */ 1443 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1444 1, 0, /* algnmnt, boundary */ 1445 (sc->flags & AAC_FLAGS_SG_64BIT) ? 1446 BUS_SPACE_MAXADDR : 1447 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 1448 BUS_SPACE_MAXADDR, /* highaddr */ 1449 NULL, NULL, /* filter, filterarg */ 1450 MAXBSIZE, /* maxsize */ 1451 AAC_MAXSGENTRIES, /* nsegments */ 1452 MAXBSIZE, /* maxsegsize */ 1453 BUS_DMA_ALLOCNOW, /* flags */ 1454 busdma_lock_mutex, /* lockfunc */ 1455 &sc->aac_io_lock, /* lockfuncarg */ 1456 &sc->aac_buffer_dmat)) { 1457 device_printf(sc->aac_dev, "can't allocate buffer DMA tag\n"); 1458 goto out; 1459 } 1460 1461 /* 1462 * Create DMA tag for mapping FIBs into controller-addressable space.. 1463 */ 1464 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1465 1, 0, /* algnmnt, boundary */ 1466 (sc->flags & AAC_FLAGS_4GB_WINDOW) ? 1467 BUS_SPACE_MAXADDR_32BIT : 1468 0x7fffffff, /* lowaddr */ 1469 BUS_SPACE_MAXADDR, /* highaddr */ 1470 NULL, NULL, /* filter, filterarg */ 1471 AAC_FIB_COUNT * 1472 sizeof(struct aac_fib), /* maxsize */ 1473 1, /* nsegments */ 1474 AAC_FIB_COUNT * 1475 sizeof(struct aac_fib), /* maxsegsize */ 1476 BUS_DMA_ALLOCNOW, /* flags */ 1477 NULL, NULL, /* No locking needed */ 1478 &sc->aac_fib_dmat)) { 1479 device_printf(sc->aac_dev, "can't allocate FIB DMA tag\n");; 1480 goto out; 1481 } 1482 1483 /* 1484 * Create DMA tag for the common structure and allocate it. 1485 */ 1486 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1487 1, 0, /* algnmnt, boundary */ 1488 (sc->flags & AAC_FLAGS_4GB_WINDOW) ? 1489 BUS_SPACE_MAXADDR_32BIT : 1490 0x7fffffff, /* lowaddr */ 1491 BUS_SPACE_MAXADDR, /* highaddr */ 1492 NULL, NULL, /* filter, filterarg */ 1493 8192 + sizeof(struct aac_common), /* maxsize */ 1494 1, /* nsegments */ 1495 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 1496 BUS_DMA_ALLOCNOW, /* flags */ 1497 NULL, NULL, /* No locking needed */ 1498 &sc->aac_common_dmat)) { 1499 device_printf(sc->aac_dev, 1500 "can't allocate common structure DMA tag\n"); 1501 goto out; 1502 } 1503 if (bus_dmamem_alloc(sc->aac_common_dmat, (void **)&sc->aac_common, 1504 BUS_DMA_NOWAIT, &sc->aac_common_dmamap)) { 1505 device_printf(sc->aac_dev, "can't allocate common structure\n"); 1506 goto out; 1507 } 1508 1509 /* 1510 * Work around a bug in the 2120 and 2200 that cannot DMA commands 1511 * below address 8192 in physical memory. 1512 * XXX If the padding is not needed, can it be put to use instead 1513 * of ignored? 1514 */ 1515 (void)bus_dmamap_load(sc->aac_common_dmat, sc->aac_common_dmamap, 1516 sc->aac_common, 8192 + sizeof(*sc->aac_common), 1517 aac_common_map, sc, 0); 1518 1519 if (sc->aac_common_busaddr < 8192) { 1520 (uint8_t *)sc->aac_common += 8192; 1521 sc->aac_common_busaddr += 8192; 1522 } 1523 bzero(sc->aac_common, sizeof(*sc->aac_common)); 1524 1525 /* Allocate some FIBs and associated command structs */ 1526 TAILQ_INIT(&sc->aac_fibmap_tqh); 1527 sc->aac_commands = malloc(AAC_MAX_FIBS * sizeof(struct aac_command), 1528 M_AACBUF, M_WAITOK|M_ZERO); 1529 while (sc->total_fibs < AAC_PREALLOCATE_FIBS) { 1530 if (aac_alloc_commands(sc) != 0) 1531 break; 1532 } 1533 if (sc->total_fibs == 0) 1534 goto out; 1535 1536 /* 1537 * Fill in the init structure. This tells the adapter about the 1538 * physical location of various important shared data structures. 1539 */ 1540 ip = &sc->aac_common->ac_init; 1541 ip->InitStructRevision = AAC_INIT_STRUCT_REVISION; 1542 ip->MiniPortRevision = AAC_INIT_STRUCT_MINIPORT_REVISION; 1543 1544 ip->AdapterFibsPhysicalAddress = sc->aac_common_busaddr + 1545 offsetof(struct aac_common, ac_fibs); 1546 ip->AdapterFibsVirtualAddress = 0; 1547 ip->AdapterFibsSize = AAC_ADAPTER_FIBS * sizeof(struct aac_fib); 1548 ip->AdapterFibAlign = sizeof(struct aac_fib); 1549 1550 ip->PrintfBufferAddress = sc->aac_common_busaddr + 1551 offsetof(struct aac_common, ac_printf); 1552 ip->PrintfBufferSize = AAC_PRINTF_BUFSIZE; 1553 1554 /* 1555 * The adapter assumes that pages are 4K in size, except on some 1556 * broken firmware versions that do the page->byte conversion twice, 1557 * therefore 'assuming' that this value is in 16MB units (2^24). 1558 * Round up since the granularity is so high. 1559 */ 1560 ip->HostPhysMemPages = ctob(physmem) / AAC_PAGE_SIZE; 1561 if (sc->flags & AAC_FLAGS_BROKEN_MEMMAP) { 1562 ip->HostPhysMemPages = 1563 (ip->HostPhysMemPages + AAC_PAGE_SIZE) / AAC_PAGE_SIZE; 1564 } 1565 ip->HostElapsedSeconds = time_second; /* reset later if invalid */ 1566 1567 /* 1568 * Initialise FIB queues. Note that it appears that the layout of the 1569 * indexes and the segmentation of the entries may be mandated by the 1570 * adapter, which is only told about the base of the queue index fields. 1571 * 1572 * The initial values of the indices are assumed to inform the adapter 1573 * of the sizes of the respective queues, and theoretically it could 1574 * work out the entire layout of the queue structures from this. We 1575 * take the easy route and just lay this area out like everyone else 1576 * does. 1577 * 1578 * The Linux driver uses a much more complex scheme whereby several 1579 * header records are kept for each queue. We use a couple of generic 1580 * list manipulation functions which 'know' the size of each list by 1581 * virtue of a table. 1582 */ 1583 qoffset = offsetof(struct aac_common, ac_qbuf) + AAC_QUEUE_ALIGN; 1584 qoffset &= ~(AAC_QUEUE_ALIGN - 1); 1585 sc->aac_queues = 1586 (struct aac_queue_table *)((uintptr_t)sc->aac_common + qoffset); 1587 ip->CommHeaderAddress = sc->aac_common_busaddr + qoffset; 1588 1589 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1590 AAC_HOST_NORM_CMD_ENTRIES; 1591 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1592 AAC_HOST_NORM_CMD_ENTRIES; 1593 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1594 AAC_HOST_HIGH_CMD_ENTRIES; 1595 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1596 AAC_HOST_HIGH_CMD_ENTRIES; 1597 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1598 AAC_ADAP_NORM_CMD_ENTRIES; 1599 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1600 AAC_ADAP_NORM_CMD_ENTRIES; 1601 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1602 AAC_ADAP_HIGH_CMD_ENTRIES; 1603 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1604 AAC_ADAP_HIGH_CMD_ENTRIES; 1605 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1606 AAC_HOST_NORM_RESP_ENTRIES; 1607 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1608 AAC_HOST_NORM_RESP_ENTRIES; 1609 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1610 AAC_HOST_HIGH_RESP_ENTRIES; 1611 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1612 AAC_HOST_HIGH_RESP_ENTRIES; 1613 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1614 AAC_ADAP_NORM_RESP_ENTRIES; 1615 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1616 AAC_ADAP_NORM_RESP_ENTRIES; 1617 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1618 AAC_ADAP_HIGH_RESP_ENTRIES; 1619 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1620 AAC_ADAP_HIGH_RESP_ENTRIES; 1621 sc->aac_qentries[AAC_HOST_NORM_CMD_QUEUE] = 1622 &sc->aac_queues->qt_HostNormCmdQueue[0]; 1623 sc->aac_qentries[AAC_HOST_HIGH_CMD_QUEUE] = 1624 &sc->aac_queues->qt_HostHighCmdQueue[0]; 1625 sc->aac_qentries[AAC_ADAP_NORM_CMD_QUEUE] = 1626 &sc->aac_queues->qt_AdapNormCmdQueue[0]; 1627 sc->aac_qentries[AAC_ADAP_HIGH_CMD_QUEUE] = 1628 &sc->aac_queues->qt_AdapHighCmdQueue[0]; 1629 sc->aac_qentries[AAC_HOST_NORM_RESP_QUEUE] = 1630 &sc->aac_queues->qt_HostNormRespQueue[0]; 1631 sc->aac_qentries[AAC_HOST_HIGH_RESP_QUEUE] = 1632 &sc->aac_queues->qt_HostHighRespQueue[0]; 1633 sc->aac_qentries[AAC_ADAP_NORM_RESP_QUEUE] = 1634 &sc->aac_queues->qt_AdapNormRespQueue[0]; 1635 sc->aac_qentries[AAC_ADAP_HIGH_RESP_QUEUE] = 1636 &sc->aac_queues->qt_AdapHighRespQueue[0]; 1637 1638 /* 1639 * Do controller-type-specific initialisation 1640 */ 1641 switch (sc->aac_hwif) { 1642 case AAC_HWIF_I960RX: 1643 AAC_SETREG4(sc, AAC_RX_ODBR, ~0); 1644 break; 1645 } 1646 1647 /* 1648 * Give the init structure to the controller. 1649 */ 1650 if (aac_sync_command(sc, AAC_MONKER_INITSTRUCT, 1651 sc->aac_common_busaddr + 1652 offsetof(struct aac_common, ac_init), 0, 0, 0, 1653 NULL)) { 1654 device_printf(sc->aac_dev, 1655 "error establishing init structure\n"); 1656 error = EIO; 1657 goto out; 1658 } 1659 1660 error = 0; 1661out: 1662 return(error); 1663} 1664 1665/* 1666 * Send a synchronous command to the controller and wait for a result. 1667 */ 1668static int 1669aac_sync_command(struct aac_softc *sc, u_int32_t command, 1670 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3, 1671 u_int32_t *sp) 1672{ 1673 time_t then; 1674 u_int32_t status; 1675 1676 debug_called(3); 1677 1678 /* populate the mailbox */ 1679 AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3); 1680 1681 /* ensure the sync command doorbell flag is cleared */ 1682 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1683 1684 /* then set it to signal the adapter */ 1685 AAC_QNOTIFY(sc, AAC_DB_SYNC_COMMAND); 1686 1687 /* spin waiting for the command to complete */ 1688 then = time_second; 1689 do { 1690 if (time_second > (then + AAC_IMMEDIATE_TIMEOUT)) { 1691 debug(1, "timed out"); 1692 return(EIO); 1693 } 1694 } while (!(AAC_GET_ISTATUS(sc) & AAC_DB_SYNC_COMMAND)); 1695 1696 /* clear the completion flag */ 1697 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1698 1699 /* get the command status */ 1700 status = AAC_GET_MAILBOX(sc, 0); 1701 if (sp != NULL) 1702 *sp = status; 1703 return(0); 1704} 1705 1706/* 1707 * Grab the sync fib area. 1708 */ 1709int 1710aac_alloc_sync_fib(struct aac_softc *sc, struct aac_fib **fib, int flags) 1711{ 1712 1713 /* 1714 * If the force flag is set, the system is shutting down, or in 1715 * trouble. Ignore the mutex. 1716 */ 1717 if (!(flags & AAC_SYNC_LOCK_FORCE)) 1718 AAC_LOCK_ACQUIRE(&sc->aac_sync_lock); 1719 1720 *fib = &sc->aac_common->ac_sync_fib; 1721 1722 return (1); 1723} 1724 1725/* 1726 * Release the sync fib area. 1727 */ 1728void 1729aac_release_sync_fib(struct aac_softc *sc) 1730{ 1731 1732 AAC_LOCK_RELEASE(&sc->aac_sync_lock); 1733} 1734 1735/* 1736 * Send a synchronous FIB to the controller and wait for a result. 1737 */ 1738int 1739aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate, 1740 struct aac_fib *fib, u_int16_t datasize) 1741{ 1742 debug_called(3); 1743 1744 if (datasize > AAC_FIB_DATASIZE) 1745 return(EINVAL); 1746 1747 /* 1748 * Set up the sync FIB 1749 */ 1750 fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED | 1751 AAC_FIBSTATE_INITIALISED | 1752 AAC_FIBSTATE_EMPTY; 1753 fib->Header.XferState |= xferstate; 1754 fib->Header.Command = command; 1755 fib->Header.StructType = AAC_FIBTYPE_TFIB; 1756 fib->Header.Size = sizeof(struct aac_fib) + datasize; 1757 fib->Header.SenderSize = sizeof(struct aac_fib); 1758 fib->Header.SenderFibAddress = 0; /* Not needed */ 1759 fib->Header.ReceiverFibAddress = sc->aac_common_busaddr + 1760 offsetof(struct aac_common, 1761 ac_sync_fib); 1762 1763 /* 1764 * Give the FIB to the controller, wait for a response. 1765 */ 1766 if (aac_sync_command(sc, AAC_MONKER_SYNCFIB, 1767 fib->Header.ReceiverFibAddress, 0, 0, 0, NULL)) { 1768 debug(2, "IO error"); 1769 return(EIO); 1770 } 1771 1772 return (0); 1773} 1774 1775/* 1776 * Adapter-space FIB queue manipulation 1777 * 1778 * Note that the queue implementation here is a little funky; neither the PI or 1779 * CI will ever be zero. This behaviour is a controller feature. 1780 */ 1781static struct { 1782 int size; 1783 int notify; 1784} aac_qinfo[] = { 1785 {AAC_HOST_NORM_CMD_ENTRIES, AAC_DB_COMMAND_NOT_FULL}, 1786 {AAC_HOST_HIGH_CMD_ENTRIES, 0}, 1787 {AAC_ADAP_NORM_CMD_ENTRIES, AAC_DB_COMMAND_READY}, 1788 {AAC_ADAP_HIGH_CMD_ENTRIES, 0}, 1789 {AAC_HOST_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_NOT_FULL}, 1790 {AAC_HOST_HIGH_RESP_ENTRIES, 0}, 1791 {AAC_ADAP_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_READY}, 1792 {AAC_ADAP_HIGH_RESP_ENTRIES, 0} 1793}; 1794 1795/* 1796 * Atomically insert an entry into the nominated queue, returns 0 on success or 1797 * EBUSY if the queue is full. 1798 * 1799 * Note: it would be more efficient to defer notifying the controller in 1800 * the case where we may be inserting several entries in rapid succession, 1801 * but implementing this usefully may be difficult (it would involve a 1802 * separate queue/notify interface). 1803 */ 1804static int 1805aac_enqueue_fib(struct aac_softc *sc, int queue, struct aac_command *cm) 1806{ 1807 u_int32_t pi, ci; 1808 int error; 1809 u_int32_t fib_size; 1810 u_int32_t fib_addr; 1811 1812 debug_called(3); 1813 1814 fib_size = cm->cm_fib->Header.Size; 1815 fib_addr = cm->cm_fib->Header.ReceiverFibAddress; 1816 1817 /* get the producer/consumer indices */ 1818 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1819 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1820 1821 /* wrap the queue? */ 1822 if (pi >= aac_qinfo[queue].size) 1823 pi = 0; 1824 1825 /* check for queue full */ 1826 if ((pi + 1) == ci) { 1827 error = EBUSY; 1828 goto out; 1829 } 1830 1831 /* populate queue entry */ 1832 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1833 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1834 1835 /* update producer index */ 1836 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1837 1838 /* 1839 * To avoid a race with its completion interrupt, place this command on 1840 * the busy queue prior to advertising it to the controller. 1841 */ 1842 aac_enqueue_busy(cm); 1843 1844 /* notify the adapter if we know how */ 1845 if (aac_qinfo[queue].notify != 0) 1846 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1847 1848 error = 0; 1849 1850out: 1851 return(error); 1852} 1853 1854/* 1855 * Atomically remove one entry from the nominated queue, returns 0 on 1856 * success or ENOENT if the queue is empty. 1857 */ 1858static int 1859aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size, 1860 struct aac_fib **fib_addr) 1861{ 1862 u_int32_t pi, ci; 1863 u_int32_t fib_index; 1864 int error; 1865 int notify; 1866 1867 debug_called(3); 1868 1869 /* get the producer/consumer indices */ 1870 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1871 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1872 1873 /* check for queue empty */ 1874 if (ci == pi) { 1875 error = ENOENT; 1876 goto out; 1877 } 1878 1879 notify = 0; 1880 if (ci == pi + 1) 1881 notify++; 1882 1883 /* wrap the queue? */ 1884 if (ci >= aac_qinfo[queue].size) 1885 ci = 0; 1886 1887 /* fetch the entry */ 1888 *fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size; 1889 1890 switch (queue) { 1891 case AAC_HOST_NORM_CMD_QUEUE: 1892 case AAC_HOST_HIGH_CMD_QUEUE: 1893 /* 1894 * The aq_fib_addr is only 32 bits wide so it can't be counted 1895 * on to hold an address. For AIF's, the adapter assumes 1896 * that it's giving us an address into the array of AIF fibs. 1897 * Therefore, we have to convert it to an index. 1898 */ 1899 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr / 1900 sizeof(struct aac_fib); 1901 *fib_addr = &sc->aac_common->ac_fibs[fib_index]; 1902 break; 1903 1904 case AAC_HOST_NORM_RESP_QUEUE: 1905 case AAC_HOST_HIGH_RESP_QUEUE: 1906 { 1907 struct aac_command *cm; 1908 1909 /* 1910 * As above, an index is used instead of an actual address. 1911 * Gotta shift the index to account for the fast response 1912 * bit. No other correction is needed since this value was 1913 * originally provided by the driver via the SenderFibAddress 1914 * field. 1915 */ 1916 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr; 1917 cm = sc->aac_commands + (fib_index >> 1); 1918 *fib_addr = cm->cm_fib; 1919 1920 /* 1921 * Is this a fast response? If it is, update the fib fields in 1922 * local memory since the whole fib isn't DMA'd back up. 1923 */ 1924 if (fib_index & 0x01) { 1925 (*fib_addr)->Header.XferState |= AAC_FIBSTATE_DONEADAP; 1926 *((u_int32_t*)((*fib_addr)->data)) = AAC_ERROR_NORMAL; 1927 } 1928 break; 1929 } 1930 default: 1931 panic("Invalid queue in aac_dequeue_fib()"); 1932 break; 1933 } 1934 1935 /* update consumer index */ 1936 sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1; 1937 1938 /* if we have made the queue un-full, notify the adapter */ 1939 if (notify && (aac_qinfo[queue].notify != 0)) 1940 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1941 error = 0; 1942 1943out: 1944 return(error); 1945} 1946 1947/* 1948 * Put our response to an Adapter Initialed Fib on the response queue 1949 */ 1950static int 1951aac_enqueue_response(struct aac_softc *sc, int queue, struct aac_fib *fib) 1952{ 1953 u_int32_t pi, ci; 1954 int error; 1955 u_int32_t fib_size; 1956 u_int32_t fib_addr; 1957 1958 debug_called(1); 1959 1960 /* Tell the adapter where the FIB is */ 1961 fib_size = fib->Header.Size; 1962 fib_addr = fib->Header.SenderFibAddress; 1963 fib->Header.ReceiverFibAddress = fib_addr; 1964 1965 /* get the producer/consumer indices */ 1966 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1967 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1968 1969 /* wrap the queue? */ 1970 if (pi >= aac_qinfo[queue].size) 1971 pi = 0; 1972 1973 /* check for queue full */ 1974 if ((pi + 1) == ci) { 1975 error = EBUSY; 1976 goto out; 1977 } 1978 1979 /* populate queue entry */ 1980 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1981 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1982 1983 /* update producer index */ 1984 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1985 1986 /* notify the adapter if we know how */ 1987 if (aac_qinfo[queue].notify != 0) 1988 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1989 1990 error = 0; 1991 1992out: 1993 return(error); 1994} 1995 1996/* 1997 * Check for commands that have been outstanding for a suspiciously long time, 1998 * and complain about them. 1999 */ 2000static void 2001aac_timeout(struct aac_softc *sc) 2002{ 2003 struct aac_command *cm; 2004 time_t deadline; 2005 2006 /* 2007 * Traverse the busy command list, bitch about late commands once 2008 * only. 2009 */ 2010 deadline = time_second - AAC_CMD_TIMEOUT; 2011 TAILQ_FOREACH(cm, &sc->aac_busy, cm_link) { 2012 if ((cm->cm_timestamp < deadline) 2013 /* && !(cm->cm_flags & AAC_CMD_TIMEDOUT) */) { 2014 cm->cm_flags |= AAC_CMD_TIMEDOUT; 2015 device_printf(sc->aac_dev, 2016 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", 2017 cm, (int)(time_second-cm->cm_timestamp)); 2018 AAC_PRINT_FIB(sc, cm->cm_fib); 2019 } 2020 } 2021 2022 return; 2023} 2024 2025/* 2026 * Interface Function Vectors 2027 */ 2028 2029/* 2030 * Read the current firmware status word. 2031 */ 2032static int 2033aac_sa_get_fwstatus(struct aac_softc *sc) 2034{ 2035 debug_called(3); 2036 2037 return(AAC_GETREG4(sc, AAC_SA_FWSTATUS)); 2038} 2039 2040static int 2041aac_rx_get_fwstatus(struct aac_softc *sc) 2042{ 2043 debug_called(3); 2044 2045 return(AAC_GETREG4(sc, AAC_RX_FWSTATUS)); 2046} 2047 2048static int 2049aac_fa_get_fwstatus(struct aac_softc *sc) 2050{ 2051 int val; 2052 2053 debug_called(3); 2054 2055 val = AAC_GETREG4(sc, AAC_FA_FWSTATUS); 2056 return (val); 2057} 2058 2059/* 2060 * Notify the controller of a change in a given queue 2061 */ 2062 2063static void 2064aac_sa_qnotify(struct aac_softc *sc, int qbit) 2065{ 2066 debug_called(3); 2067 2068 AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit); 2069} 2070 2071static void 2072aac_rx_qnotify(struct aac_softc *sc, int qbit) 2073{ 2074 debug_called(3); 2075 2076 AAC_SETREG4(sc, AAC_RX_IDBR, qbit); 2077} 2078 2079static void 2080aac_fa_qnotify(struct aac_softc *sc, int qbit) 2081{ 2082 debug_called(3); 2083 2084 AAC_SETREG2(sc, AAC_FA_DOORBELL1, qbit); 2085 AAC_FA_HACK(sc); 2086} 2087 2088/* 2089 * Get the interrupt reason bits 2090 */ 2091static int 2092aac_sa_get_istatus(struct aac_softc *sc) 2093{ 2094 debug_called(3); 2095 2096 return(AAC_GETREG2(sc, AAC_SA_DOORBELL0)); 2097} 2098 2099static int 2100aac_rx_get_istatus(struct aac_softc *sc) 2101{ 2102 debug_called(3); 2103 2104 return(AAC_GETREG4(sc, AAC_RX_ODBR)); 2105} 2106 2107static int 2108aac_fa_get_istatus(struct aac_softc *sc) 2109{ 2110 int val; 2111 2112 debug_called(3); 2113 2114 val = AAC_GETREG2(sc, AAC_FA_DOORBELL0); 2115 return (val); 2116} 2117 2118/* 2119 * Clear some interrupt reason bits 2120 */ 2121static void 2122aac_sa_clear_istatus(struct aac_softc *sc, int mask) 2123{ 2124 debug_called(3); 2125 2126 AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask); 2127} 2128 2129static void 2130aac_rx_clear_istatus(struct aac_softc *sc, int mask) 2131{ 2132 debug_called(3); 2133 2134 AAC_SETREG4(sc, AAC_RX_ODBR, mask); 2135} 2136 2137static void 2138aac_fa_clear_istatus(struct aac_softc *sc, int mask) 2139{ 2140 debug_called(3); 2141 2142 AAC_SETREG2(sc, AAC_FA_DOORBELL0_CLEAR, mask); 2143 AAC_FA_HACK(sc); 2144} 2145 2146/* 2147 * Populate the mailbox and set the command word 2148 */ 2149static void 2150aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2151 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2152{ 2153 debug_called(4); 2154 2155 AAC_SETREG4(sc, AAC_SA_MAILBOX, command); 2156 AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0); 2157 AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1); 2158 AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2); 2159 AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3); 2160} 2161 2162static void 2163aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 2164 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2165{ 2166 debug_called(4); 2167 2168 AAC_SETREG4(sc, AAC_RX_MAILBOX, command); 2169 AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0); 2170 AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1); 2171 AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2); 2172 AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3); 2173} 2174 2175static void 2176aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2177 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2178{ 2179 debug_called(4); 2180 2181 AAC_SETREG4(sc, AAC_FA_MAILBOX, command); 2182 AAC_FA_HACK(sc); 2183 AAC_SETREG4(sc, AAC_FA_MAILBOX + 4, arg0); 2184 AAC_FA_HACK(sc); 2185 AAC_SETREG4(sc, AAC_FA_MAILBOX + 8, arg1); 2186 AAC_FA_HACK(sc); 2187 AAC_SETREG4(sc, AAC_FA_MAILBOX + 12, arg2); 2188 AAC_FA_HACK(sc); 2189 AAC_SETREG4(sc, AAC_FA_MAILBOX + 16, arg3); 2190 AAC_FA_HACK(sc); 2191} 2192 2193/* 2194 * Fetch the immediate command status word 2195 */ 2196static int 2197aac_sa_get_mailbox(struct aac_softc *sc, int mb) 2198{ 2199 debug_called(4); 2200 2201 return(AAC_GETREG4(sc, AAC_SA_MAILBOX + (mb * 4))); 2202} 2203 2204static int 2205aac_rx_get_mailbox(struct aac_softc *sc, int mb) 2206{ 2207 debug_called(4); 2208 2209 return(AAC_GETREG4(sc, AAC_RX_MAILBOX + (mb * 4))); 2210} 2211 2212static int 2213aac_fa_get_mailbox(struct aac_softc *sc, int mb) 2214{ 2215 int val; 2216 2217 debug_called(4); 2218 2219 val = AAC_GETREG4(sc, AAC_FA_MAILBOX + (mb * 4)); 2220 return (val); 2221} 2222 2223/* 2224 * Set/clear interrupt masks 2225 */ 2226static void 2227aac_sa_set_interrupts(struct aac_softc *sc, int enable) 2228{ 2229 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2230 2231 if (enable) { 2232 AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2233 } else { 2234 AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0); 2235 } 2236} 2237 2238static void 2239aac_rx_set_interrupts(struct aac_softc *sc, int enable) 2240{ 2241 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2242 2243 if (enable) { 2244 AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS); 2245 } else { 2246 AAC_SETREG4(sc, AAC_RX_OIMR, ~0); 2247 } 2248} 2249 2250static void 2251aac_fa_set_interrupts(struct aac_softc *sc, int enable) 2252{ 2253 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2254 2255 if (enable) { 2256 AAC_SETREG2((sc), AAC_FA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2257 AAC_FA_HACK(sc); 2258 } else { 2259 AAC_SETREG2((sc), AAC_FA_MASK0, ~0); 2260 AAC_FA_HACK(sc); 2261 } 2262} 2263 2264/* 2265 * Debugging and Diagnostics 2266 */ 2267 2268/* 2269 * Print some information about the controller. 2270 */ 2271static void 2272aac_describe_controller(struct aac_softc *sc) 2273{ 2274 struct aac_fib *fib; 2275 struct aac_adapter_info *info; 2276 2277 debug_called(2); 2278 2279 aac_alloc_sync_fib(sc, &fib, 0); 2280 2281 fib->data[0] = 0; 2282 if (aac_sync_fib(sc, RequestAdapterInfo, 0, fib, 1)) { 2283 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 2284 aac_release_sync_fib(sc); 2285 return; 2286 } 2287 info = (struct aac_adapter_info *)&fib->data[0]; 2288 2289 device_printf(sc->aac_dev, "%s %dMHz, %dMB cache memory, %s\n", 2290 aac_describe_code(aac_cpu_variant, info->CpuVariant), 2291 info->ClockSpeed, info->BufferMem / (1024 * 1024), 2292 aac_describe_code(aac_battery_platform, 2293 info->batteryPlatform)); 2294 2295 /* save the kernel revision structure for later use */ 2296 sc->aac_revision = info->KernelRevision; 2297 device_printf(sc->aac_dev, "Kernel %d.%d-%d, Build %d, S/N %6X\n", 2298 info->KernelRevision.external.comp.major, 2299 info->KernelRevision.external.comp.minor, 2300 info->KernelRevision.external.comp.dash, 2301 info->KernelRevision.buildNumber, 2302 (u_int32_t)(info->SerialNumber & 0xffffff)); 2303 2304 aac_release_sync_fib(sc); 2305 2306 if (1 || bootverbose) { 2307 device_printf(sc->aac_dev, "Supported Options=%b\n", 2308 sc->supported_options, 2309 "\20" 2310 "\1SNAPSHOT" 2311 "\2CLUSTERS" 2312 "\3WCACHE" 2313 "\4DATA64" 2314 "\5HOSTTIME" 2315 "\6RAID50" 2316 "\7WINDOW4GB" 2317 "\10SCSIUPGD" 2318 "\11SOFTERR" 2319 "\12NORECOND" 2320 "\13SGMAP64" 2321 "\14ALARM" 2322 "\15NONDASD"); 2323 } 2324} 2325 2326/* 2327 * Look up a text description of a numeric error code and return a pointer to 2328 * same. 2329 */ 2330static char * 2331aac_describe_code(struct aac_code_lookup *table, u_int32_t code) 2332{ 2333 int i; 2334 2335 for (i = 0; table[i].string != NULL; i++) 2336 if (table[i].code == code) 2337 return(table[i].string); 2338 return(table[i + 1].string); 2339} 2340 2341/* 2342 * Management Interface 2343 */ 2344 2345static int 2346aac_open(dev_t dev, int flags, int fmt, d_thread_t *td) 2347{ 2348 struct aac_softc *sc; 2349 2350 debug_called(2); 2351 2352 sc = dev->si_drv1; 2353 2354 /* Check to make sure the device isn't already open */ 2355 if (sc->aac_state & AAC_STATE_OPEN) { 2356 return EBUSY; 2357 } 2358 sc->aac_state |= AAC_STATE_OPEN; 2359 2360 return 0; 2361} 2362 2363static int 2364aac_close(dev_t dev, int flags, int fmt, d_thread_t *td) 2365{ 2366 struct aac_softc *sc; 2367 2368 debug_called(2); 2369 2370 sc = dev->si_drv1; 2371 2372 /* Mark this unit as no longer open */ 2373 sc->aac_state &= ~AAC_STATE_OPEN; 2374 2375 return 0; 2376} 2377 2378static int 2379aac_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, d_thread_t *td) 2380{ 2381 union aac_statrequest *as; 2382 struct aac_softc *sc; 2383 int error = 0; 2384 uint32_t cookie; 2385 2386 debug_called(2); 2387 2388 as = (union aac_statrequest *)arg; 2389 sc = dev->si_drv1; 2390 2391 switch (cmd) { 2392 case AACIO_STATS: 2393 switch (as->as_item) { 2394 case AACQ_FREE: 2395 case AACQ_BIO: 2396 case AACQ_READY: 2397 case AACQ_BUSY: 2398 case AACQ_COMPLETE: 2399 bcopy(&sc->aac_qstat[as->as_item], &as->as_qstat, 2400 sizeof(struct aac_qstat)); 2401 break; 2402 default: 2403 error = ENOENT; 2404 break; 2405 } 2406 break; 2407 2408 case FSACTL_SENDFIB: 2409 arg = *(caddr_t*)arg; 2410 case FSACTL_LNX_SENDFIB: 2411 debug(1, "FSACTL_SENDFIB"); 2412 error = aac_ioctl_sendfib(sc, arg); 2413 break; 2414 case FSACTL_AIF_THREAD: 2415 case FSACTL_LNX_AIF_THREAD: 2416 debug(1, "FSACTL_AIF_THREAD"); 2417 error = EINVAL; 2418 break; 2419 case FSACTL_OPEN_GET_ADAPTER_FIB: 2420 arg = *(caddr_t*)arg; 2421 case FSACTL_LNX_OPEN_GET_ADAPTER_FIB: 2422 debug(1, "FSACTL_OPEN_GET_ADAPTER_FIB"); 2423 /* 2424 * Pass the caller out an AdapterFibContext. 2425 * 2426 * Note that because we only support one opener, we 2427 * basically ignore this. Set the caller's context to a magic 2428 * number just in case. 2429 * 2430 * The Linux code hands the driver a pointer into kernel space, 2431 * and then trusts it when the caller hands it back. Aiee! 2432 * Here, we give it the proc pointer of the per-adapter aif 2433 * thread. It's only used as a sanity check in other calls. 2434 */ 2435 cookie = (uint32_t)(uintptr_t)sc->aifthread; 2436 error = copyout(&cookie, arg, sizeof(cookie)); 2437 break; 2438 case FSACTL_GET_NEXT_ADAPTER_FIB: 2439 arg = *(caddr_t*)arg; 2440 case FSACTL_LNX_GET_NEXT_ADAPTER_FIB: 2441 debug(1, "FSACTL_GET_NEXT_ADAPTER_FIB"); 2442 error = aac_getnext_aif(sc, arg); 2443 break; 2444 case FSACTL_CLOSE_GET_ADAPTER_FIB: 2445 case FSACTL_LNX_CLOSE_GET_ADAPTER_FIB: 2446 debug(1, "FSACTL_CLOSE_GET_ADAPTER_FIB"); 2447 /* don't do anything here */ 2448 break; 2449 case FSACTL_MINIPORT_REV_CHECK: 2450 arg = *(caddr_t*)arg; 2451 case FSACTL_LNX_MINIPORT_REV_CHECK: 2452 debug(1, "FSACTL_MINIPORT_REV_CHECK"); 2453 error = aac_rev_check(sc, arg); 2454 break; 2455 case FSACTL_QUERY_DISK: 2456 arg = *(caddr_t*)arg; 2457 case FSACTL_LNX_QUERY_DISK: 2458 debug(1, "FSACTL_QUERY_DISK"); 2459 error = aac_query_disk(sc, arg); 2460 break; 2461 case FSACTL_DELETE_DISK: 2462 case FSACTL_LNX_DELETE_DISK: 2463 /* 2464 * We don't trust the underland to tell us when to delete a 2465 * container, rather we rely on an AIF coming from the 2466 * controller 2467 */ 2468 error = 0; 2469 break; 2470 default: 2471 debug(1, "unsupported cmd 0x%lx\n", cmd); 2472 error = EINVAL; 2473 break; 2474 } 2475 return(error); 2476} 2477 2478static int 2479aac_poll(dev_t dev, int poll_events, d_thread_t *td) 2480{ 2481 struct aac_softc *sc; 2482 int revents; 2483 2484 sc = dev->si_drv1; 2485 revents = 0; 2486 2487 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2488 if ((poll_events & (POLLRDNORM | POLLIN)) != 0) { 2489 if (sc->aac_aifq_tail != sc->aac_aifq_head) 2490 revents |= poll_events & (POLLIN | POLLRDNORM); 2491 } 2492 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2493 2494 if (revents == 0) { 2495 if (poll_events & (POLLIN | POLLRDNORM)) 2496 selrecord(td, &sc->rcv_select); 2497 } 2498 2499 return (revents); 2500} 2501 2502/* 2503 * Send a FIB supplied from userspace 2504 */ 2505static int 2506aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib) 2507{ 2508 struct aac_command *cm; 2509 int size, error; 2510 2511 debug_called(2); 2512 2513 cm = NULL; 2514 2515 /* 2516 * Get a command 2517 */ 2518 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 2519 if (aac_alloc_command(sc, &cm)) { 2520 error = EBUSY; 2521 goto out; 2522 } 2523 2524 /* 2525 * Fetch the FIB header, then re-copy to get data as well. 2526 */ 2527 if ((error = copyin(ufib, cm->cm_fib, 2528 sizeof(struct aac_fib_header))) != 0) 2529 goto out; 2530 size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header); 2531 if (size > sizeof(struct aac_fib)) { 2532 device_printf(sc->aac_dev, "incoming FIB oversized (%d > %zd)\n", 2533 size, sizeof(struct aac_fib)); 2534 size = sizeof(struct aac_fib); 2535 } 2536 if ((error = copyin(ufib, cm->cm_fib, size)) != 0) 2537 goto out; 2538 cm->cm_fib->Header.Size = size; 2539 cm->cm_timestamp = time_second; 2540 2541 /* 2542 * Pass the FIB to the controller, wait for it to complete. 2543 */ 2544 if ((error = aac_wait_command(cm, 30)) != 0) { /* XXX user timeout? */ 2545 device_printf(sc->aac_dev, 2546 "aac_wait_command return %d\n", error); 2547 goto out; 2548 } 2549 2550 /* 2551 * Copy the FIB and data back out to the caller. 2552 */ 2553 size = cm->cm_fib->Header.Size; 2554 if (size > sizeof(struct aac_fib)) { 2555 device_printf(sc->aac_dev, "outbound FIB oversized (%d > %zd)\n", 2556 size, sizeof(struct aac_fib)); 2557 size = sizeof(struct aac_fib); 2558 } 2559 error = copyout(cm->cm_fib, ufib, size); 2560 2561out: 2562 if (cm != NULL) { 2563 aac_release_command(cm); 2564 } 2565 2566 AAC_LOCK_RELEASE(&sc->aac_io_lock); 2567 return(error); 2568} 2569 2570/* 2571 * Handle an AIF sent to us by the controller; queue it for later reference. 2572 * If the queue fills up, then drop the older entries. 2573 */ 2574static void 2575aac_handle_aif(struct aac_softc *sc, struct aac_fib *fib) 2576{ 2577 struct aac_aif_command *aif; 2578 struct aac_container *co, *co_next; 2579 struct aac_mntinfo *mi; 2580 struct aac_mntinforesp *mir = NULL; 2581 u_int16_t rsize; 2582 int next, found; 2583 int count = 0, added = 0, i = 0; 2584 2585 debug_called(2); 2586 2587 aif = (struct aac_aif_command*)&fib->data[0]; 2588 aac_print_aif(sc, aif); 2589 2590 /* Is it an event that we should care about? */ 2591 switch (aif->command) { 2592 case AifCmdEventNotify: 2593 switch (aif->data.EN.type) { 2594 case AifEnAddContainer: 2595 case AifEnDeleteContainer: 2596 /* 2597 * A container was added or deleted, but the message 2598 * doesn't tell us anything else! Re-enumerate the 2599 * containers and sort things out. 2600 */ 2601 aac_alloc_sync_fib(sc, &fib, 0); 2602 mi = (struct aac_mntinfo *)&fib->data[0]; 2603 do { 2604 /* 2605 * Ask the controller for its containers one at 2606 * a time. 2607 * XXX What if the controller's list changes 2608 * midway through this enumaration? 2609 * XXX This should be done async. 2610 */ 2611 bzero(mi, sizeof(struct aac_mntinfo)); 2612 mi->Command = VM_NameServe; 2613 mi->MntType = FT_FILESYS; 2614 mi->MntCount = i; 2615 rsize = sizeof(mir); 2616 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 2617 sizeof(struct aac_mntinfo))) { 2618 printf("Error probing container %d\n", 2619 i); 2620 continue; 2621 } 2622 mir = (struct aac_mntinforesp *)&fib->data[0]; 2623 /* XXX Need to check if count changed */ 2624 count = mir->MntRespCount; 2625 /* 2626 * Check the container against our list. 2627 * co->co_found was already set to 0 in a 2628 * previous run. 2629 */ 2630 if ((mir->Status == ST_OK) && 2631 (mir->MntTable[0].VolType != CT_NONE)) { 2632 found = 0; 2633 TAILQ_FOREACH(co, 2634 &sc->aac_container_tqh, 2635 co_link) { 2636 if (co->co_mntobj.ObjectId == 2637 mir->MntTable[0].ObjectId) { 2638 co->co_found = 1; 2639 found = 1; 2640 break; 2641 } 2642 } 2643 /* 2644 * If the container matched, continue 2645 * in the list. 2646 */ 2647 if (found) { 2648 i++; 2649 continue; 2650 } 2651 2652 /* 2653 * This is a new container. Do all the 2654 * appropriate things to set it up. 2655 */ 2656 aac_add_container(sc, mir, 1); 2657 added = 1; 2658 } 2659 i++; 2660 } while ((i < count) && (i < AAC_MAX_CONTAINERS)); 2661 aac_release_sync_fib(sc); 2662 2663 /* 2664 * Go through our list of containers and see which ones 2665 * were not marked 'found'. Since the controller didn't 2666 * list them they must have been deleted. Do the 2667 * appropriate steps to destroy the device. Also reset 2668 * the co->co_found field. 2669 */ 2670 co = TAILQ_FIRST(&sc->aac_container_tqh); 2671 while (co != NULL) { 2672 if (co->co_found == 0) { 2673 device_delete_child(sc->aac_dev, 2674 co->co_disk); 2675 co_next = TAILQ_NEXT(co, co_link); 2676 AAC_LOCK_ACQUIRE(&sc-> 2677 aac_container_lock); 2678 TAILQ_REMOVE(&sc->aac_container_tqh, co, 2679 co_link); 2680 AAC_LOCK_RELEASE(&sc-> 2681 aac_container_lock); 2682 FREE(co, M_AACBUF); 2683 co = co_next; 2684 } else { 2685 co->co_found = 0; 2686 co = TAILQ_NEXT(co, co_link); 2687 } 2688 } 2689 2690 /* Attach the newly created containers */ 2691 if (added) 2692 bus_generic_attach(sc->aac_dev); 2693 2694 break; 2695 2696 default: 2697 break; 2698 } 2699 2700 default: 2701 break; 2702 } 2703 2704 /* Copy the AIF data to the AIF queue for ioctl retrieval */ 2705 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2706 next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH; 2707 if (next != sc->aac_aifq_tail) { 2708 bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command)); 2709 sc->aac_aifq_head = next; 2710 2711 /* On the off chance that someone is sleeping for an aif... */ 2712 if (sc->aac_state & AAC_STATE_AIF_SLEEPER) 2713 wakeup(sc->aac_aifq); 2714 /* Wakeup any poll()ers */ 2715 selwakeup(&sc->rcv_select); 2716 } 2717 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2718 2719 return; 2720} 2721 2722/* 2723 * Return the Revision of the driver to userspace and check to see if the 2724 * userspace app is possibly compatible. This is extremely bogus since 2725 * our driver doesn't follow Adaptec's versioning system. Cheat by just 2726 * returning what the card reported. 2727 */ 2728static int 2729aac_rev_check(struct aac_softc *sc, caddr_t udata) 2730{ 2731 struct aac_rev_check rev_check; 2732 struct aac_rev_check_resp rev_check_resp; 2733 int error = 0; 2734 2735 debug_called(2); 2736 2737 /* 2738 * Copyin the revision struct from userspace 2739 */ 2740 if ((error = copyin(udata, (caddr_t)&rev_check, 2741 sizeof(struct aac_rev_check))) != 0) { 2742 return error; 2743 } 2744 2745 debug(2, "Userland revision= %d\n", 2746 rev_check.callingRevision.buildNumber); 2747 2748 /* 2749 * Doctor up the response struct. 2750 */ 2751 rev_check_resp.possiblyCompatible = 1; 2752 rev_check_resp.adapterSWRevision.external.ul = 2753 sc->aac_revision.external.ul; 2754 rev_check_resp.adapterSWRevision.buildNumber = 2755 sc->aac_revision.buildNumber; 2756 2757 return(copyout((caddr_t)&rev_check_resp, udata, 2758 sizeof(struct aac_rev_check_resp))); 2759} 2760 2761/* 2762 * Pass the caller the next AIF in their queue 2763 */ 2764static int 2765aac_getnext_aif(struct aac_softc *sc, caddr_t arg) 2766{ 2767 struct get_adapter_fib_ioctl agf; 2768 int error; 2769 2770 debug_called(2); 2771 2772 if ((error = copyin(arg, &agf, sizeof(agf))) == 0) { 2773 2774 /* 2775 * Check the magic number that we gave the caller. 2776 */ 2777 if (agf.AdapterFibContext != (int)(uintptr_t)sc->aifthread) { 2778 error = EFAULT; 2779 } else { 2780 error = aac_return_aif(sc, agf.AifFib); 2781 if ((error == EAGAIN) && (agf.Wait)) { 2782 sc->aac_state |= AAC_STATE_AIF_SLEEPER; 2783 while (error == EAGAIN) { 2784 error = tsleep(sc->aac_aifq, PRIBIO | 2785 PCATCH, "aacaif", 0); 2786 if (error == 0) 2787 error = aac_return_aif(sc, 2788 agf.AifFib); 2789 } 2790 sc->aac_state &= ~AAC_STATE_AIF_SLEEPER; 2791 } 2792 } 2793 } 2794 return(error); 2795} 2796 2797/* 2798 * Hand the next AIF off the top of the queue out to userspace. 2799 */ 2800static int 2801aac_return_aif(struct aac_softc *sc, caddr_t uptr) 2802{ 2803 int error; 2804 2805 debug_called(2); 2806 2807 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2808 if (sc->aac_aifq_tail == sc->aac_aifq_head) { 2809 error = EAGAIN; 2810 } else { 2811 error = copyout(&sc->aac_aifq[sc->aac_aifq_tail], uptr, 2812 sizeof(struct aac_aif_command)); 2813 if (error) 2814 device_printf(sc->aac_dev, 2815 "aac_return_aif: copyout returned %d\n", error); 2816 if (!error) 2817 sc->aac_aifq_tail = (sc->aac_aifq_tail + 1) % 2818 AAC_AIFQ_LENGTH; 2819 } 2820 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2821 return(error); 2822} 2823 2824/* 2825 * Give the userland some information about the container. The AAC arch 2826 * expects the driver to be a SCSI passthrough type driver, so it expects 2827 * the containers to have b:t:l numbers. Fake it. 2828 */ 2829static int 2830aac_query_disk(struct aac_softc *sc, caddr_t uptr) 2831{ 2832 struct aac_query_disk query_disk; 2833 struct aac_container *co; 2834 struct aac_disk *disk; 2835 int error, id; 2836 2837 debug_called(2); 2838 2839 disk = NULL; 2840 2841 error = copyin(uptr, (caddr_t)&query_disk, 2842 sizeof(struct aac_query_disk)); 2843 if (error) 2844 return (error); 2845 2846 id = query_disk.ContainerNumber; 2847 if (id == -1) 2848 return (EINVAL); 2849 2850 AAC_LOCK_ACQUIRE(&sc->aac_container_lock); 2851 TAILQ_FOREACH(co, &sc->aac_container_tqh, co_link) { 2852 if (co->co_mntobj.ObjectId == id) 2853 break; 2854 } 2855 2856 if (co == NULL) { 2857 query_disk.Valid = 0; 2858 query_disk.Locked = 0; 2859 query_disk.Deleted = 1; /* XXX is this right? */ 2860 } else { 2861 disk = device_get_softc(co->co_disk); 2862 query_disk.Valid = 1; 2863 query_disk.Locked = 2864 (disk->ad_flags & AAC_DISK_OPEN) ? 1 : 0; 2865 query_disk.Deleted = 0; 2866 query_disk.Bus = device_get_unit(sc->aac_dev); 2867 query_disk.Target = disk->unit; 2868 query_disk.Lun = 0; 2869 query_disk.UnMapped = 0; 2870 sprintf(&query_disk.diskDeviceName[0], "%s%d", 2871 disk->ad_disk.d_name, disk->ad_disk.d_unit); 2872 } 2873 AAC_LOCK_RELEASE(&sc->aac_container_lock); 2874 2875 error = copyout((caddr_t)&query_disk, uptr, 2876 sizeof(struct aac_query_disk)); 2877 2878 return (error); 2879} 2880 2881static void 2882aac_get_bus_info(struct aac_softc *sc) 2883{ 2884 struct aac_fib *fib; 2885 struct aac_ctcfg *c_cmd; 2886 struct aac_ctcfg_resp *c_resp; 2887 struct aac_vmioctl *vmi; 2888 struct aac_vmi_businf_resp *vmi_resp; 2889 struct aac_getbusinf businfo; 2890 struct aac_sim *caminf; 2891 device_t child; 2892 int i, found, error; 2893 2894 aac_alloc_sync_fib(sc, &fib, 0); 2895 c_cmd = (struct aac_ctcfg *)&fib->data[0]; 2896 bzero(c_cmd, sizeof(struct aac_ctcfg)); 2897 2898 c_cmd->Command = VM_ContainerConfig; 2899 c_cmd->cmd = CT_GET_SCSI_METHOD; 2900 c_cmd->param = 0; 2901 2902 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2903 sizeof(struct aac_ctcfg)); 2904 if (error) { 2905 device_printf(sc->aac_dev, "Error %d sending " 2906 "VM_ContainerConfig command\n", error); 2907 aac_release_sync_fib(sc); 2908 return; 2909 } 2910 2911 c_resp = (struct aac_ctcfg_resp *)&fib->data[0]; 2912 if (c_resp->Status != ST_OK) { 2913 device_printf(sc->aac_dev, "VM_ContainerConfig returned 0x%x\n", 2914 c_resp->Status); 2915 aac_release_sync_fib(sc); 2916 return; 2917 } 2918 2919 sc->scsi_method_id = c_resp->param; 2920 2921 vmi = (struct aac_vmioctl *)&fib->data[0]; 2922 bzero(vmi, sizeof(struct aac_vmioctl)); 2923 2924 vmi->Command = VM_Ioctl; 2925 vmi->ObjType = FT_DRIVE; 2926 vmi->MethId = sc->scsi_method_id; 2927 vmi->ObjId = 0; 2928 vmi->IoctlCmd = GetBusInfo; 2929 2930 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2931 sizeof(struct aac_vmioctl)); 2932 if (error) { 2933 device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n", 2934 error); 2935 aac_release_sync_fib(sc); 2936 return; 2937 } 2938 2939 vmi_resp = (struct aac_vmi_businf_resp *)&fib->data[0]; 2940 if (vmi_resp->Status != ST_OK) { 2941 device_printf(sc->aac_dev, "VM_Ioctl returned %d\n", 2942 vmi_resp->Status); 2943 aac_release_sync_fib(sc); 2944 return; 2945 } 2946 2947 bcopy(&vmi_resp->BusInf, &businfo, sizeof(struct aac_getbusinf)); 2948 aac_release_sync_fib(sc); 2949 2950 found = 0; 2951 for (i = 0; i < businfo.BusCount; i++) { 2952 if (businfo.BusValid[i] != AAC_BUS_VALID) 2953 continue; 2954 2955 caminf = (struct aac_sim *)malloc( sizeof(struct aac_sim), 2956 M_AACBUF, M_NOWAIT | M_ZERO); 2957 if (caminf == NULL) 2958 continue; 2959 2960 child = device_add_child(sc->aac_dev, "aacp", -1); 2961 if (child == NULL) { 2962 device_printf(sc->aac_dev, "device_add_child failed\n"); 2963 continue; 2964 } 2965 2966 caminf->TargetsPerBus = businfo.TargetsPerBus; 2967 caminf->BusNumber = i; 2968 caminf->InitiatorBusId = businfo.InitiatorBusId[i]; 2969 caminf->aac_sc = sc; 2970 caminf->sim_dev = child; 2971 2972 device_set_ivars(child, caminf); 2973 device_set_desc(child, "SCSI Passthrough Bus"); 2974 TAILQ_INSERT_TAIL(&sc->aac_sim_tqh, caminf, sim_link); 2975 2976 found = 1; 2977 } 2978 2979 if (found) 2980 bus_generic_attach(sc->aac_dev); 2981 2982 return; 2983} 2984