aac.c revision 119418
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 119418 2003-08-24 17:55:58Z obrien $"); 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 = (struct aac_queue_table *)((uintptr_t)sc->aac_common + qoffset); 1586 ip->CommHeaderAddress = sc->aac_common_busaddr + qoffset; 1587 1588 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1589 AAC_HOST_NORM_CMD_ENTRIES; 1590 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1591 AAC_HOST_NORM_CMD_ENTRIES; 1592 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1593 AAC_HOST_HIGH_CMD_ENTRIES; 1594 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1595 AAC_HOST_HIGH_CMD_ENTRIES; 1596 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1597 AAC_ADAP_NORM_CMD_ENTRIES; 1598 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1599 AAC_ADAP_NORM_CMD_ENTRIES; 1600 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1601 AAC_ADAP_HIGH_CMD_ENTRIES; 1602 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1603 AAC_ADAP_HIGH_CMD_ENTRIES; 1604 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1605 AAC_HOST_NORM_RESP_ENTRIES; 1606 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1607 AAC_HOST_NORM_RESP_ENTRIES; 1608 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1609 AAC_HOST_HIGH_RESP_ENTRIES; 1610 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1611 AAC_HOST_HIGH_RESP_ENTRIES; 1612 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1613 AAC_ADAP_NORM_RESP_ENTRIES; 1614 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1615 AAC_ADAP_NORM_RESP_ENTRIES; 1616 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1617 AAC_ADAP_HIGH_RESP_ENTRIES; 1618 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1619 AAC_ADAP_HIGH_RESP_ENTRIES; 1620 sc->aac_qentries[AAC_HOST_NORM_CMD_QUEUE] = 1621 &sc->aac_queues->qt_HostNormCmdQueue[0]; 1622 sc->aac_qentries[AAC_HOST_HIGH_CMD_QUEUE] = 1623 &sc->aac_queues->qt_HostHighCmdQueue[0]; 1624 sc->aac_qentries[AAC_ADAP_NORM_CMD_QUEUE] = 1625 &sc->aac_queues->qt_AdapNormCmdQueue[0]; 1626 sc->aac_qentries[AAC_ADAP_HIGH_CMD_QUEUE] = 1627 &sc->aac_queues->qt_AdapHighCmdQueue[0]; 1628 sc->aac_qentries[AAC_HOST_NORM_RESP_QUEUE] = 1629 &sc->aac_queues->qt_HostNormRespQueue[0]; 1630 sc->aac_qentries[AAC_HOST_HIGH_RESP_QUEUE] = 1631 &sc->aac_queues->qt_HostHighRespQueue[0]; 1632 sc->aac_qentries[AAC_ADAP_NORM_RESP_QUEUE] = 1633 &sc->aac_queues->qt_AdapNormRespQueue[0]; 1634 sc->aac_qentries[AAC_ADAP_HIGH_RESP_QUEUE] = 1635 &sc->aac_queues->qt_AdapHighRespQueue[0]; 1636 1637 /* 1638 * Do controller-type-specific initialisation 1639 */ 1640 switch (sc->aac_hwif) { 1641 case AAC_HWIF_I960RX: 1642 AAC_SETREG4(sc, AAC_RX_ODBR, ~0); 1643 break; 1644 } 1645 1646 /* 1647 * Give the init structure to the controller. 1648 */ 1649 if (aac_sync_command(sc, AAC_MONKER_INITSTRUCT, 1650 sc->aac_common_busaddr + 1651 offsetof(struct aac_common, ac_init), 0, 0, 0, 1652 NULL)) { 1653 device_printf(sc->aac_dev, 1654 "error establishing init structure\n"); 1655 error = EIO; 1656 goto out; 1657 } 1658 1659 error = 0; 1660out: 1661 return(error); 1662} 1663 1664/* 1665 * Send a synchronous command to the controller and wait for a result. 1666 */ 1667static int 1668aac_sync_command(struct aac_softc *sc, u_int32_t command, 1669 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3, 1670 u_int32_t *sp) 1671{ 1672 time_t then; 1673 u_int32_t status; 1674 1675 debug_called(3); 1676 1677 /* populate the mailbox */ 1678 AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3); 1679 1680 /* ensure the sync command doorbell flag is cleared */ 1681 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1682 1683 /* then set it to signal the adapter */ 1684 AAC_QNOTIFY(sc, AAC_DB_SYNC_COMMAND); 1685 1686 /* spin waiting for the command to complete */ 1687 then = time_second; 1688 do { 1689 if (time_second > (then + AAC_IMMEDIATE_TIMEOUT)) { 1690 debug(1, "timed out"); 1691 return(EIO); 1692 } 1693 } while (!(AAC_GET_ISTATUS(sc) & AAC_DB_SYNC_COMMAND)); 1694 1695 /* clear the completion flag */ 1696 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1697 1698 /* get the command status */ 1699 status = AAC_GET_MAILBOX(sc, 0); 1700 if (sp != NULL) 1701 *sp = status; 1702 return(0); 1703} 1704 1705/* 1706 * Grab the sync fib area. 1707 */ 1708int 1709aac_alloc_sync_fib(struct aac_softc *sc, struct aac_fib **fib, int flags) 1710{ 1711 1712 /* 1713 * If the force flag is set, the system is shutting down, or in 1714 * trouble. Ignore the mutex. 1715 */ 1716 if (!(flags & AAC_SYNC_LOCK_FORCE)) 1717 AAC_LOCK_ACQUIRE(&sc->aac_sync_lock); 1718 1719 *fib = &sc->aac_common->ac_sync_fib; 1720 1721 return (1); 1722} 1723 1724/* 1725 * Release the sync fib area. 1726 */ 1727void 1728aac_release_sync_fib(struct aac_softc *sc) 1729{ 1730 1731 AAC_LOCK_RELEASE(&sc->aac_sync_lock); 1732} 1733 1734/* 1735 * Send a synchronous FIB to the controller and wait for a result. 1736 */ 1737int 1738aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate, 1739 struct aac_fib *fib, u_int16_t datasize) 1740{ 1741 debug_called(3); 1742 1743 if (datasize > AAC_FIB_DATASIZE) 1744 return(EINVAL); 1745 1746 /* 1747 * Set up the sync FIB 1748 */ 1749 fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED | 1750 AAC_FIBSTATE_INITIALISED | 1751 AAC_FIBSTATE_EMPTY; 1752 fib->Header.XferState |= xferstate; 1753 fib->Header.Command = command; 1754 fib->Header.StructType = AAC_FIBTYPE_TFIB; 1755 fib->Header.Size = sizeof(struct aac_fib) + datasize; 1756 fib->Header.SenderSize = sizeof(struct aac_fib); 1757 fib->Header.SenderFibAddress = 0; /* Not needed */ 1758 fib->Header.ReceiverFibAddress = sc->aac_common_busaddr + 1759 offsetof(struct aac_common, 1760 ac_sync_fib); 1761 1762 /* 1763 * Give the FIB to the controller, wait for a response. 1764 */ 1765 if (aac_sync_command(sc, AAC_MONKER_SYNCFIB, 1766 fib->Header.ReceiverFibAddress, 0, 0, 0, NULL)) { 1767 debug(2, "IO error"); 1768 return(EIO); 1769 } 1770 1771 return (0); 1772} 1773 1774/* 1775 * Adapter-space FIB queue manipulation 1776 * 1777 * Note that the queue implementation here is a little funky; neither the PI or 1778 * CI will ever be zero. This behaviour is a controller feature. 1779 */ 1780static struct { 1781 int size; 1782 int notify; 1783} aac_qinfo[] = { 1784 {AAC_HOST_NORM_CMD_ENTRIES, AAC_DB_COMMAND_NOT_FULL}, 1785 {AAC_HOST_HIGH_CMD_ENTRIES, 0}, 1786 {AAC_ADAP_NORM_CMD_ENTRIES, AAC_DB_COMMAND_READY}, 1787 {AAC_ADAP_HIGH_CMD_ENTRIES, 0}, 1788 {AAC_HOST_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_NOT_FULL}, 1789 {AAC_HOST_HIGH_RESP_ENTRIES, 0}, 1790 {AAC_ADAP_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_READY}, 1791 {AAC_ADAP_HIGH_RESP_ENTRIES, 0} 1792}; 1793 1794/* 1795 * Atomically insert an entry into the nominated queue, returns 0 on success or 1796 * EBUSY if the queue is full. 1797 * 1798 * Note: it would be more efficient to defer notifying the controller in 1799 * the case where we may be inserting several entries in rapid succession, 1800 * but implementing this usefully may be difficult (it would involve a 1801 * separate queue/notify interface). 1802 */ 1803static int 1804aac_enqueue_fib(struct aac_softc *sc, int queue, struct aac_command *cm) 1805{ 1806 u_int32_t pi, ci; 1807 int error; 1808 u_int32_t fib_size; 1809 u_int32_t fib_addr; 1810 1811 debug_called(3); 1812 1813 fib_size = cm->cm_fib->Header.Size; 1814 fib_addr = cm->cm_fib->Header.ReceiverFibAddress; 1815 1816 /* get the producer/consumer indices */ 1817 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1818 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1819 1820 /* wrap the queue? */ 1821 if (pi >= aac_qinfo[queue].size) 1822 pi = 0; 1823 1824 /* check for queue full */ 1825 if ((pi + 1) == ci) { 1826 error = EBUSY; 1827 goto out; 1828 } 1829 1830 /* populate queue entry */ 1831 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1832 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1833 1834 /* update producer index */ 1835 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1836 1837 /* 1838 * To avoid a race with its completion interrupt, place this command on 1839 * the busy queue prior to advertising it to the controller. 1840 */ 1841 aac_enqueue_busy(cm); 1842 1843 /* notify the adapter if we know how */ 1844 if (aac_qinfo[queue].notify != 0) 1845 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1846 1847 error = 0; 1848 1849out: 1850 return(error); 1851} 1852 1853/* 1854 * Atomically remove one entry from the nominated queue, returns 0 on 1855 * success or ENOENT if the queue is empty. 1856 */ 1857static int 1858aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size, 1859 struct aac_fib **fib_addr) 1860{ 1861 u_int32_t pi, ci; 1862 u_int32_t fib_index; 1863 int error; 1864 int notify; 1865 1866 debug_called(3); 1867 1868 /* get the producer/consumer indices */ 1869 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1870 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1871 1872 /* check for queue empty */ 1873 if (ci == pi) { 1874 error = ENOENT; 1875 goto out; 1876 } 1877 1878 notify = 0; 1879 if (ci == pi + 1) 1880 notify++; 1881 1882 /* wrap the queue? */ 1883 if (ci >= aac_qinfo[queue].size) 1884 ci = 0; 1885 1886 /* fetch the entry */ 1887 *fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size; 1888 1889 switch (queue) { 1890 case AAC_HOST_NORM_CMD_QUEUE: 1891 case AAC_HOST_HIGH_CMD_QUEUE: 1892 /* 1893 * The aq_fib_addr is only 32 bits wide so it can't be counted 1894 * on to hold an address. For AIF's, the adapter assumes 1895 * that it's giving us an address into the array of AIF fibs. 1896 * Therefore, we have to convert it to an index. 1897 */ 1898 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr / 1899 sizeof(struct aac_fib); 1900 *fib_addr = &sc->aac_common->ac_fibs[fib_index]; 1901 break; 1902 1903 case AAC_HOST_NORM_RESP_QUEUE: 1904 case AAC_HOST_HIGH_RESP_QUEUE: 1905 { 1906 struct aac_command *cm; 1907 1908 /* 1909 * As above, an index is used instead of an actual address. 1910 * Gotta shift the index to account for the fast response 1911 * bit. No other correction is needed since this value was 1912 * originally provided by the driver via the SenderFibAddress 1913 * field. 1914 */ 1915 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr; 1916 cm = sc->aac_commands + (fib_index >> 1); 1917 *fib_addr = cm->cm_fib; 1918 1919 /* 1920 * Is this a fast response? If it is, update the fib fields in 1921 * local memory since the whole fib isn't DMA'd back up. 1922 */ 1923 if (fib_index & 0x01) { 1924 (*fib_addr)->Header.XferState |= AAC_FIBSTATE_DONEADAP; 1925 *((u_int32_t*)((*fib_addr)->data)) = AAC_ERROR_NORMAL; 1926 } 1927 break; 1928 } 1929 default: 1930 panic("Invalid queue in aac_dequeue_fib()"); 1931 break; 1932 } 1933 1934 /* update consumer index */ 1935 sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1; 1936 1937 /* if we have made the queue un-full, notify the adapter */ 1938 if (notify && (aac_qinfo[queue].notify != 0)) 1939 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1940 error = 0; 1941 1942out: 1943 return(error); 1944} 1945 1946/* 1947 * Put our response to an Adapter Initialed Fib on the response queue 1948 */ 1949static int 1950aac_enqueue_response(struct aac_softc *sc, int queue, struct aac_fib *fib) 1951{ 1952 u_int32_t pi, ci; 1953 int error; 1954 u_int32_t fib_size; 1955 u_int32_t fib_addr; 1956 1957 debug_called(1); 1958 1959 /* Tell the adapter where the FIB is */ 1960 fib_size = fib->Header.Size; 1961 fib_addr = fib->Header.SenderFibAddress; 1962 fib->Header.ReceiverFibAddress = fib_addr; 1963 1964 /* get the producer/consumer indices */ 1965 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1966 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1967 1968 /* wrap the queue? */ 1969 if (pi >= aac_qinfo[queue].size) 1970 pi = 0; 1971 1972 /* check for queue full */ 1973 if ((pi + 1) == ci) { 1974 error = EBUSY; 1975 goto out; 1976 } 1977 1978 /* populate queue entry */ 1979 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1980 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1981 1982 /* update producer index */ 1983 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1984 1985 /* notify the adapter if we know how */ 1986 if (aac_qinfo[queue].notify != 0) 1987 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1988 1989 error = 0; 1990 1991out: 1992 return(error); 1993} 1994 1995/* 1996 * Check for commands that have been outstanding for a suspiciously long time, 1997 * and complain about them. 1998 */ 1999static void 2000aac_timeout(struct aac_softc *sc) 2001{ 2002 struct aac_command *cm; 2003 time_t deadline; 2004 2005 /* 2006 * Traverse the busy command list, bitch about late commands once 2007 * only. 2008 */ 2009 deadline = time_second - AAC_CMD_TIMEOUT; 2010 TAILQ_FOREACH(cm, &sc->aac_busy, cm_link) { 2011 if ((cm->cm_timestamp < deadline) 2012 /* && !(cm->cm_flags & AAC_CMD_TIMEDOUT) */) { 2013 cm->cm_flags |= AAC_CMD_TIMEDOUT; 2014 device_printf(sc->aac_dev, 2015 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", 2016 cm, (int)(time_second-cm->cm_timestamp)); 2017 AAC_PRINT_FIB(sc, cm->cm_fib); 2018 } 2019 } 2020 2021 return; 2022} 2023 2024/* 2025 * Interface Function Vectors 2026 */ 2027 2028/* 2029 * Read the current firmware status word. 2030 */ 2031static int 2032aac_sa_get_fwstatus(struct aac_softc *sc) 2033{ 2034 debug_called(3); 2035 2036 return(AAC_GETREG4(sc, AAC_SA_FWSTATUS)); 2037} 2038 2039static int 2040aac_rx_get_fwstatus(struct aac_softc *sc) 2041{ 2042 debug_called(3); 2043 2044 return(AAC_GETREG4(sc, AAC_RX_FWSTATUS)); 2045} 2046 2047static int 2048aac_fa_get_fwstatus(struct aac_softc *sc) 2049{ 2050 int val; 2051 2052 debug_called(3); 2053 2054 val = AAC_GETREG4(sc, AAC_FA_FWSTATUS); 2055 return (val); 2056} 2057 2058/* 2059 * Notify the controller of a change in a given queue 2060 */ 2061 2062static void 2063aac_sa_qnotify(struct aac_softc *sc, int qbit) 2064{ 2065 debug_called(3); 2066 2067 AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit); 2068} 2069 2070static void 2071aac_rx_qnotify(struct aac_softc *sc, int qbit) 2072{ 2073 debug_called(3); 2074 2075 AAC_SETREG4(sc, AAC_RX_IDBR, qbit); 2076} 2077 2078static void 2079aac_fa_qnotify(struct aac_softc *sc, int qbit) 2080{ 2081 debug_called(3); 2082 2083 AAC_SETREG2(sc, AAC_FA_DOORBELL1, qbit); 2084 AAC_FA_HACK(sc); 2085} 2086 2087/* 2088 * Get the interrupt reason bits 2089 */ 2090static int 2091aac_sa_get_istatus(struct aac_softc *sc) 2092{ 2093 debug_called(3); 2094 2095 return(AAC_GETREG2(sc, AAC_SA_DOORBELL0)); 2096} 2097 2098static int 2099aac_rx_get_istatus(struct aac_softc *sc) 2100{ 2101 debug_called(3); 2102 2103 return(AAC_GETREG4(sc, AAC_RX_ODBR)); 2104} 2105 2106static int 2107aac_fa_get_istatus(struct aac_softc *sc) 2108{ 2109 int val; 2110 2111 debug_called(3); 2112 2113 val = AAC_GETREG2(sc, AAC_FA_DOORBELL0); 2114 return (val); 2115} 2116 2117/* 2118 * Clear some interrupt reason bits 2119 */ 2120static void 2121aac_sa_clear_istatus(struct aac_softc *sc, int mask) 2122{ 2123 debug_called(3); 2124 2125 AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask); 2126} 2127 2128static void 2129aac_rx_clear_istatus(struct aac_softc *sc, int mask) 2130{ 2131 debug_called(3); 2132 2133 AAC_SETREG4(sc, AAC_RX_ODBR, mask); 2134} 2135 2136static void 2137aac_fa_clear_istatus(struct aac_softc *sc, int mask) 2138{ 2139 debug_called(3); 2140 2141 AAC_SETREG2(sc, AAC_FA_DOORBELL0_CLEAR, mask); 2142 AAC_FA_HACK(sc); 2143} 2144 2145/* 2146 * Populate the mailbox and set the command word 2147 */ 2148static void 2149aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2150 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2151{ 2152 debug_called(4); 2153 2154 AAC_SETREG4(sc, AAC_SA_MAILBOX, command); 2155 AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0); 2156 AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1); 2157 AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2); 2158 AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3); 2159} 2160 2161static void 2162aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 2163 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2164{ 2165 debug_called(4); 2166 2167 AAC_SETREG4(sc, AAC_RX_MAILBOX, command); 2168 AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0); 2169 AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1); 2170 AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2); 2171 AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3); 2172} 2173 2174static void 2175aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2176 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2177{ 2178 debug_called(4); 2179 2180 AAC_SETREG4(sc, AAC_FA_MAILBOX, command); 2181 AAC_FA_HACK(sc); 2182 AAC_SETREG4(sc, AAC_FA_MAILBOX + 4, arg0); 2183 AAC_FA_HACK(sc); 2184 AAC_SETREG4(sc, AAC_FA_MAILBOX + 8, arg1); 2185 AAC_FA_HACK(sc); 2186 AAC_SETREG4(sc, AAC_FA_MAILBOX + 12, arg2); 2187 AAC_FA_HACK(sc); 2188 AAC_SETREG4(sc, AAC_FA_MAILBOX + 16, arg3); 2189 AAC_FA_HACK(sc); 2190} 2191 2192/* 2193 * Fetch the immediate command status word 2194 */ 2195static int 2196aac_sa_get_mailbox(struct aac_softc *sc, int mb) 2197{ 2198 debug_called(4); 2199 2200 return(AAC_GETREG4(sc, AAC_SA_MAILBOX + (mb * 4))); 2201} 2202 2203static int 2204aac_rx_get_mailbox(struct aac_softc *sc, int mb) 2205{ 2206 debug_called(4); 2207 2208 return(AAC_GETREG4(sc, AAC_RX_MAILBOX + (mb * 4))); 2209} 2210 2211static int 2212aac_fa_get_mailbox(struct aac_softc *sc, int mb) 2213{ 2214 int val; 2215 2216 debug_called(4); 2217 2218 val = AAC_GETREG4(sc, AAC_FA_MAILBOX + (mb * 4)); 2219 return (val); 2220} 2221 2222/* 2223 * Set/clear interrupt masks 2224 */ 2225static void 2226aac_sa_set_interrupts(struct aac_softc *sc, int enable) 2227{ 2228 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2229 2230 if (enable) { 2231 AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2232 } else { 2233 AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0); 2234 } 2235} 2236 2237static void 2238aac_rx_set_interrupts(struct aac_softc *sc, int enable) 2239{ 2240 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2241 2242 if (enable) { 2243 AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS); 2244 } else { 2245 AAC_SETREG4(sc, AAC_RX_OIMR, ~0); 2246 } 2247} 2248 2249static void 2250aac_fa_set_interrupts(struct aac_softc *sc, int enable) 2251{ 2252 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2253 2254 if (enable) { 2255 AAC_SETREG2((sc), AAC_FA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2256 AAC_FA_HACK(sc); 2257 } else { 2258 AAC_SETREG2((sc), AAC_FA_MASK0, ~0); 2259 AAC_FA_HACK(sc); 2260 } 2261} 2262 2263/* 2264 * Debugging and Diagnostics 2265 */ 2266 2267/* 2268 * Print some information about the controller. 2269 */ 2270static void 2271aac_describe_controller(struct aac_softc *sc) 2272{ 2273 struct aac_fib *fib; 2274 struct aac_adapter_info *info; 2275 2276 debug_called(2); 2277 2278 aac_alloc_sync_fib(sc, &fib, 0); 2279 2280 fib->data[0] = 0; 2281 if (aac_sync_fib(sc, RequestAdapterInfo, 0, fib, 1)) { 2282 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 2283 aac_release_sync_fib(sc); 2284 return; 2285 } 2286 info = (struct aac_adapter_info *)&fib->data[0]; 2287 2288 device_printf(sc->aac_dev, "%s %dMHz, %dMB cache memory, %s\n", 2289 aac_describe_code(aac_cpu_variant, info->CpuVariant), 2290 info->ClockSpeed, info->BufferMem / (1024 * 1024), 2291 aac_describe_code(aac_battery_platform, 2292 info->batteryPlatform)); 2293 2294 /* save the kernel revision structure for later use */ 2295 sc->aac_revision = info->KernelRevision; 2296 device_printf(sc->aac_dev, "Kernel %d.%d-%d, Build %d, S/N %6X\n", 2297 info->KernelRevision.external.comp.major, 2298 info->KernelRevision.external.comp.minor, 2299 info->KernelRevision.external.comp.dash, 2300 info->KernelRevision.buildNumber, 2301 (u_int32_t)(info->SerialNumber & 0xffffff)); 2302 2303 aac_release_sync_fib(sc); 2304 2305 if (1 || bootverbose) { 2306 device_printf(sc->aac_dev, "Supported Options=%b\n", 2307 sc->supported_options, 2308 "\20" 2309 "\1SNAPSHOT" 2310 "\2CLUSTERS" 2311 "\3WCACHE" 2312 "\4DATA64" 2313 "\5HOSTTIME" 2314 "\6RAID50" 2315 "\7WINDOW4GB" 2316 "\10SCSIUPGD" 2317 "\11SOFTERR" 2318 "\12NORECOND" 2319 "\13SGMAP64" 2320 "\14ALARM" 2321 "\15NONDASD"); 2322 } 2323} 2324 2325/* 2326 * Look up a text description of a numeric error code and return a pointer to 2327 * same. 2328 */ 2329static char * 2330aac_describe_code(struct aac_code_lookup *table, u_int32_t code) 2331{ 2332 int i; 2333 2334 for (i = 0; table[i].string != NULL; i++) 2335 if (table[i].code == code) 2336 return(table[i].string); 2337 return(table[i + 1].string); 2338} 2339 2340/* 2341 * Management Interface 2342 */ 2343 2344static int 2345aac_open(dev_t dev, int flags, int fmt, d_thread_t *td) 2346{ 2347 struct aac_softc *sc; 2348 2349 debug_called(2); 2350 2351 sc = dev->si_drv1; 2352 2353 /* Check to make sure the device isn't already open */ 2354 if (sc->aac_state & AAC_STATE_OPEN) { 2355 return EBUSY; 2356 } 2357 sc->aac_state |= AAC_STATE_OPEN; 2358 2359 return 0; 2360} 2361 2362static int 2363aac_close(dev_t dev, int flags, int fmt, d_thread_t *td) 2364{ 2365 struct aac_softc *sc; 2366 2367 debug_called(2); 2368 2369 sc = dev->si_drv1; 2370 2371 /* Mark this unit as no longer open */ 2372 sc->aac_state &= ~AAC_STATE_OPEN; 2373 2374 return 0; 2375} 2376 2377static int 2378aac_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, d_thread_t *td) 2379{ 2380 union aac_statrequest *as; 2381 struct aac_softc *sc; 2382 int error = 0; 2383 uint32_t cookie; 2384 2385 debug_called(2); 2386 2387 as = (union aac_statrequest *)arg; 2388 sc = dev->si_drv1; 2389 2390 switch (cmd) { 2391 case AACIO_STATS: 2392 switch (as->as_item) { 2393 case AACQ_FREE: 2394 case AACQ_BIO: 2395 case AACQ_READY: 2396 case AACQ_BUSY: 2397 case AACQ_COMPLETE: 2398 bcopy(&sc->aac_qstat[as->as_item], &as->as_qstat, 2399 sizeof(struct aac_qstat)); 2400 break; 2401 default: 2402 error = ENOENT; 2403 break; 2404 } 2405 break; 2406 2407 case FSACTL_SENDFIB: 2408 arg = *(caddr_t*)arg; 2409 case FSACTL_LNX_SENDFIB: 2410 debug(1, "FSACTL_SENDFIB"); 2411 error = aac_ioctl_sendfib(sc, arg); 2412 break; 2413 case FSACTL_AIF_THREAD: 2414 case FSACTL_LNX_AIF_THREAD: 2415 debug(1, "FSACTL_AIF_THREAD"); 2416 error = EINVAL; 2417 break; 2418 case FSACTL_OPEN_GET_ADAPTER_FIB: 2419 arg = *(caddr_t*)arg; 2420 case FSACTL_LNX_OPEN_GET_ADAPTER_FIB: 2421 debug(1, "FSACTL_OPEN_GET_ADAPTER_FIB"); 2422 /* 2423 * Pass the caller out an AdapterFibContext. 2424 * 2425 * Note that because we only support one opener, we 2426 * basically ignore this. Set the caller's context to a magic 2427 * number just in case. 2428 * 2429 * The Linux code hands the driver a pointer into kernel space, 2430 * and then trusts it when the caller hands it back. Aiee! 2431 * Here, we give it the proc pointer of the per-adapter aif 2432 * thread. It's only used as a sanity check in other calls. 2433 */ 2434 cookie = (uint32_t)(uintptr_t)sc->aifthread; 2435 error = copyout(&cookie, arg, sizeof(cookie)); 2436 break; 2437 case FSACTL_GET_NEXT_ADAPTER_FIB: 2438 arg = *(caddr_t*)arg; 2439 case FSACTL_LNX_GET_NEXT_ADAPTER_FIB: 2440 debug(1, "FSACTL_GET_NEXT_ADAPTER_FIB"); 2441 error = aac_getnext_aif(sc, arg); 2442 break; 2443 case FSACTL_CLOSE_GET_ADAPTER_FIB: 2444 case FSACTL_LNX_CLOSE_GET_ADAPTER_FIB: 2445 debug(1, "FSACTL_CLOSE_GET_ADAPTER_FIB"); 2446 /* don't do anything here */ 2447 break; 2448 case FSACTL_MINIPORT_REV_CHECK: 2449 arg = *(caddr_t*)arg; 2450 case FSACTL_LNX_MINIPORT_REV_CHECK: 2451 debug(1, "FSACTL_MINIPORT_REV_CHECK"); 2452 error = aac_rev_check(sc, arg); 2453 break; 2454 case FSACTL_QUERY_DISK: 2455 arg = *(caddr_t*)arg; 2456 case FSACTL_LNX_QUERY_DISK: 2457 debug(1, "FSACTL_QUERY_DISK"); 2458 error = aac_query_disk(sc, arg); 2459 break; 2460 case FSACTL_DELETE_DISK: 2461 case FSACTL_LNX_DELETE_DISK: 2462 /* 2463 * We don't trust the underland to tell us when to delete a 2464 * container, rather we rely on an AIF coming from the 2465 * controller 2466 */ 2467 error = 0; 2468 break; 2469 default: 2470 debug(1, "unsupported cmd 0x%lx\n", cmd); 2471 error = EINVAL; 2472 break; 2473 } 2474 return(error); 2475} 2476 2477static int 2478aac_poll(dev_t dev, int poll_events, d_thread_t *td) 2479{ 2480 struct aac_softc *sc; 2481 int revents; 2482 2483 sc = dev->si_drv1; 2484 revents = 0; 2485 2486 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2487 if ((poll_events & (POLLRDNORM | POLLIN)) != 0) { 2488 if (sc->aac_aifq_tail != sc->aac_aifq_head) 2489 revents |= poll_events & (POLLIN | POLLRDNORM); 2490 } 2491 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2492 2493 if (revents == 0) { 2494 if (poll_events & (POLLIN | POLLRDNORM)) 2495 selrecord(td, &sc->rcv_select); 2496 } 2497 2498 return (revents); 2499} 2500 2501/* 2502 * Send a FIB supplied from userspace 2503 */ 2504static int 2505aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib) 2506{ 2507 struct aac_command *cm; 2508 int size, error; 2509 2510 debug_called(2); 2511 2512 cm = NULL; 2513 2514 /* 2515 * Get a command 2516 */ 2517 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 2518 if (aac_alloc_command(sc, &cm)) { 2519 error = EBUSY; 2520 goto out; 2521 } 2522 2523 /* 2524 * Fetch the FIB header, then re-copy to get data as well. 2525 */ 2526 if ((error = copyin(ufib, cm->cm_fib, 2527 sizeof(struct aac_fib_header))) != 0) 2528 goto out; 2529 size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header); 2530 if (size > sizeof(struct aac_fib)) { 2531 device_printf(sc->aac_dev, "incoming FIB oversized (%d > %zd)\n", 2532 size, sizeof(struct aac_fib)); 2533 size = sizeof(struct aac_fib); 2534 } 2535 if ((error = copyin(ufib, cm->cm_fib, size)) != 0) 2536 goto out; 2537 cm->cm_fib->Header.Size = size; 2538 cm->cm_timestamp = time_second; 2539 2540 /* 2541 * Pass the FIB to the controller, wait for it to complete. 2542 */ 2543 if ((error = aac_wait_command(cm, 30)) != 0) { /* XXX user timeout? */ 2544 device_printf(sc->aac_dev, 2545 "aac_wait_command return %d\n", error); 2546 goto out; 2547 } 2548 2549 /* 2550 * Copy the FIB and data back out to the caller. 2551 */ 2552 size = cm->cm_fib->Header.Size; 2553 if (size > sizeof(struct aac_fib)) { 2554 device_printf(sc->aac_dev, "outbound FIB oversized (%d > %zd)\n", 2555 size, sizeof(struct aac_fib)); 2556 size = sizeof(struct aac_fib); 2557 } 2558 error = copyout(cm->cm_fib, ufib, size); 2559 2560out: 2561 if (cm != NULL) { 2562 aac_release_command(cm); 2563 } 2564 2565 AAC_LOCK_RELEASE(&sc->aac_io_lock); 2566 return(error); 2567} 2568 2569/* 2570 * Handle an AIF sent to us by the controller; queue it for later reference. 2571 * If the queue fills up, then drop the older entries. 2572 */ 2573static void 2574aac_handle_aif(struct aac_softc *sc, struct aac_fib *fib) 2575{ 2576 struct aac_aif_command *aif; 2577 struct aac_container *co, *co_next; 2578 struct aac_mntinfo *mi; 2579 struct aac_mntinforesp *mir = NULL; 2580 u_int16_t rsize; 2581 int next, found; 2582 int count = 0, added = 0, i = 0; 2583 2584 debug_called(2); 2585 2586 aif = (struct aac_aif_command*)&fib->data[0]; 2587 aac_print_aif(sc, aif); 2588 2589 /* Is it an event that we should care about? */ 2590 switch (aif->command) { 2591 case AifCmdEventNotify: 2592 switch (aif->data.EN.type) { 2593 case AifEnAddContainer: 2594 case AifEnDeleteContainer: 2595 /* 2596 * A container was added or deleted, but the message 2597 * doesn't tell us anything else! Re-enumerate the 2598 * containers and sort things out. 2599 */ 2600 aac_alloc_sync_fib(sc, &fib, 0); 2601 mi = (struct aac_mntinfo *)&fib->data[0]; 2602 do { 2603 /* 2604 * Ask the controller for its containers one at 2605 * a time. 2606 * XXX What if the controller's list changes 2607 * midway through this enumaration? 2608 * XXX This should be done async. 2609 */ 2610 bzero(mi, sizeof(struct aac_mntinfo)); 2611 mi->Command = VM_NameServe; 2612 mi->MntType = FT_FILESYS; 2613 mi->MntCount = i; 2614 rsize = sizeof(mir); 2615 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 2616 sizeof(struct aac_mntinfo))) { 2617 printf("Error probing container %d\n", 2618 i); 2619 continue; 2620 } 2621 mir = (struct aac_mntinforesp *)&fib->data[0]; 2622 /* XXX Need to check if count changed */ 2623 count = mir->MntRespCount; 2624 /* 2625 * Check the container against our list. 2626 * co->co_found was already set to 0 in a 2627 * previous run. 2628 */ 2629 if ((mir->Status == ST_OK) && 2630 (mir->MntTable[0].VolType != CT_NONE)) { 2631 found = 0; 2632 TAILQ_FOREACH(co, 2633 &sc->aac_container_tqh, 2634 co_link) { 2635 if (co->co_mntobj.ObjectId == 2636 mir->MntTable[0].ObjectId) { 2637 co->co_found = 1; 2638 found = 1; 2639 break; 2640 } 2641 } 2642 /* 2643 * If the container matched, continue 2644 * in the list. 2645 */ 2646 if (found) { 2647 i++; 2648 continue; 2649 } 2650 2651 /* 2652 * This is a new container. Do all the 2653 * appropriate things to set it up. 2654 */ 2655 aac_add_container(sc, mir, 1); 2656 added = 1; 2657 } 2658 i++; 2659 } while ((i < count) && (i < AAC_MAX_CONTAINERS)); 2660 aac_release_sync_fib(sc); 2661 2662 /* 2663 * Go through our list of containers and see which ones 2664 * were not marked 'found'. Since the controller didn't 2665 * list them they must have been deleted. Do the 2666 * appropriate steps to destroy the device. Also reset 2667 * the co->co_found field. 2668 */ 2669 co = TAILQ_FIRST(&sc->aac_container_tqh); 2670 while (co != NULL) { 2671 if (co->co_found == 0) { 2672 device_delete_child(sc->aac_dev, 2673 co->co_disk); 2674 co_next = TAILQ_NEXT(co, co_link); 2675 AAC_LOCK_ACQUIRE(&sc-> 2676 aac_container_lock); 2677 TAILQ_REMOVE(&sc->aac_container_tqh, co, 2678 co_link); 2679 AAC_LOCK_RELEASE(&sc-> 2680 aac_container_lock); 2681 FREE(co, M_AACBUF); 2682 co = co_next; 2683 } else { 2684 co->co_found = 0; 2685 co = TAILQ_NEXT(co, co_link); 2686 } 2687 } 2688 2689 /* Attach the newly created containers */ 2690 if (added) 2691 bus_generic_attach(sc->aac_dev); 2692 2693 break; 2694 2695 default: 2696 break; 2697 } 2698 2699 default: 2700 break; 2701 } 2702 2703 /* Copy the AIF data to the AIF queue for ioctl retrieval */ 2704 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2705 next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH; 2706 if (next != sc->aac_aifq_tail) { 2707 bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command)); 2708 sc->aac_aifq_head = next; 2709 2710 /* On the off chance that someone is sleeping for an aif... */ 2711 if (sc->aac_state & AAC_STATE_AIF_SLEEPER) 2712 wakeup(sc->aac_aifq); 2713 /* Wakeup any poll()ers */ 2714 selwakeup(&sc->rcv_select); 2715 } 2716 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2717 2718 return; 2719} 2720 2721/* 2722 * Return the Revision of the driver to userspace and check to see if the 2723 * userspace app is possibly compatible. This is extremely bogus since 2724 * our driver doesn't follow Adaptec's versioning system. Cheat by just 2725 * returning what the card reported. 2726 */ 2727static int 2728aac_rev_check(struct aac_softc *sc, caddr_t udata) 2729{ 2730 struct aac_rev_check rev_check; 2731 struct aac_rev_check_resp rev_check_resp; 2732 int error = 0; 2733 2734 debug_called(2); 2735 2736 /* 2737 * Copyin the revision struct from userspace 2738 */ 2739 if ((error = copyin(udata, (caddr_t)&rev_check, 2740 sizeof(struct aac_rev_check))) != 0) { 2741 return error; 2742 } 2743 2744 debug(2, "Userland revision= %d\n", 2745 rev_check.callingRevision.buildNumber); 2746 2747 /* 2748 * Doctor up the response struct. 2749 */ 2750 rev_check_resp.possiblyCompatible = 1; 2751 rev_check_resp.adapterSWRevision.external.ul = 2752 sc->aac_revision.external.ul; 2753 rev_check_resp.adapterSWRevision.buildNumber = 2754 sc->aac_revision.buildNumber; 2755 2756 return(copyout((caddr_t)&rev_check_resp, udata, 2757 sizeof(struct aac_rev_check_resp))); 2758} 2759 2760/* 2761 * Pass the caller the next AIF in their queue 2762 */ 2763static int 2764aac_getnext_aif(struct aac_softc *sc, caddr_t arg) 2765{ 2766 struct get_adapter_fib_ioctl agf; 2767 int error; 2768 2769 debug_called(2); 2770 2771 if ((error = copyin(arg, &agf, sizeof(agf))) == 0) { 2772 2773 /* 2774 * Check the magic number that we gave the caller. 2775 */ 2776 if (agf.AdapterFibContext != (int)(uintptr_t)sc->aifthread) { 2777 error = EFAULT; 2778 } else { 2779 error = aac_return_aif(sc, agf.AifFib); 2780 if ((error == EAGAIN) && (agf.Wait)) { 2781 sc->aac_state |= AAC_STATE_AIF_SLEEPER; 2782 while (error == EAGAIN) { 2783 error = tsleep(sc->aac_aifq, PRIBIO | 2784 PCATCH, "aacaif", 0); 2785 if (error == 0) 2786 error = aac_return_aif(sc, 2787 agf.AifFib); 2788 } 2789 sc->aac_state &= ~AAC_STATE_AIF_SLEEPER; 2790 } 2791 } 2792 } 2793 return(error); 2794} 2795 2796/* 2797 * Hand the next AIF off the top of the queue out to userspace. 2798 */ 2799static int 2800aac_return_aif(struct aac_softc *sc, caddr_t uptr) 2801{ 2802 int error; 2803 2804 debug_called(2); 2805 2806 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2807 if (sc->aac_aifq_tail == sc->aac_aifq_head) { 2808 error = EAGAIN; 2809 } else { 2810 error = copyout(&sc->aac_aifq[sc->aac_aifq_tail], uptr, 2811 sizeof(struct aac_aif_command)); 2812 if (error) 2813 device_printf(sc->aac_dev, 2814 "aac_return_aif: copyout returned %d\n", error); 2815 if (!error) 2816 sc->aac_aifq_tail = (sc->aac_aifq_tail + 1) % 2817 AAC_AIFQ_LENGTH; 2818 } 2819 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2820 return(error); 2821} 2822 2823/* 2824 * Give the userland some information about the container. The AAC arch 2825 * expects the driver to be a SCSI passthrough type driver, so it expects 2826 * the containers to have b:t:l numbers. Fake it. 2827 */ 2828static int 2829aac_query_disk(struct aac_softc *sc, caddr_t uptr) 2830{ 2831 struct aac_query_disk query_disk; 2832 struct aac_container *co; 2833 struct aac_disk *disk; 2834 int error, id; 2835 2836 debug_called(2); 2837 2838 disk = NULL; 2839 2840 error = copyin(uptr, (caddr_t)&query_disk, 2841 sizeof(struct aac_query_disk)); 2842 if (error) 2843 return (error); 2844 2845 id = query_disk.ContainerNumber; 2846 if (id == -1) 2847 return (EINVAL); 2848 2849 AAC_LOCK_ACQUIRE(&sc->aac_container_lock); 2850 TAILQ_FOREACH(co, &sc->aac_container_tqh, co_link) { 2851 if (co->co_mntobj.ObjectId == id) 2852 break; 2853 } 2854 2855 if (co == NULL) { 2856 query_disk.Valid = 0; 2857 query_disk.Locked = 0; 2858 query_disk.Deleted = 1; /* XXX is this right? */ 2859 } else { 2860 disk = device_get_softc(co->co_disk); 2861 query_disk.Valid = 1; 2862 query_disk.Locked = 2863 (disk->ad_flags & AAC_DISK_OPEN) ? 1 : 0; 2864 query_disk.Deleted = 0; 2865 query_disk.Bus = device_get_unit(sc->aac_dev); 2866 query_disk.Target = disk->unit; 2867 query_disk.Lun = 0; 2868 query_disk.UnMapped = 0; 2869 sprintf(&query_disk.diskDeviceName[0], "%s%d", 2870 disk->ad_disk.d_name, disk->ad_disk.d_unit); 2871 } 2872 AAC_LOCK_RELEASE(&sc->aac_container_lock); 2873 2874 error = copyout((caddr_t)&query_disk, uptr, 2875 sizeof(struct aac_query_disk)); 2876 2877 return (error); 2878} 2879 2880static void 2881aac_get_bus_info(struct aac_softc *sc) 2882{ 2883 struct aac_fib *fib; 2884 struct aac_ctcfg *c_cmd; 2885 struct aac_ctcfg_resp *c_resp; 2886 struct aac_vmioctl *vmi; 2887 struct aac_vmi_businf_resp *vmi_resp; 2888 struct aac_getbusinf businfo; 2889 struct aac_sim *caminf; 2890 device_t child; 2891 int i, found, error; 2892 2893 aac_alloc_sync_fib(sc, &fib, 0); 2894 c_cmd = (struct aac_ctcfg *)&fib->data[0]; 2895 bzero(c_cmd, sizeof(struct aac_ctcfg)); 2896 2897 c_cmd->Command = VM_ContainerConfig; 2898 c_cmd->cmd = CT_GET_SCSI_METHOD; 2899 c_cmd->param = 0; 2900 2901 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2902 sizeof(struct aac_ctcfg)); 2903 if (error) { 2904 device_printf(sc->aac_dev, "Error %d sending " 2905 "VM_ContainerConfig command\n", error); 2906 aac_release_sync_fib(sc); 2907 return; 2908 } 2909 2910 c_resp = (struct aac_ctcfg_resp *)&fib->data[0]; 2911 if (c_resp->Status != ST_OK) { 2912 device_printf(sc->aac_dev, "VM_ContainerConfig returned 0x%x\n", 2913 c_resp->Status); 2914 aac_release_sync_fib(sc); 2915 return; 2916 } 2917 2918 sc->scsi_method_id = c_resp->param; 2919 2920 vmi = (struct aac_vmioctl *)&fib->data[0]; 2921 bzero(vmi, sizeof(struct aac_vmioctl)); 2922 2923 vmi->Command = VM_Ioctl; 2924 vmi->ObjType = FT_DRIVE; 2925 vmi->MethId = sc->scsi_method_id; 2926 vmi->ObjId = 0; 2927 vmi->IoctlCmd = GetBusInfo; 2928 2929 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2930 sizeof(struct aac_vmioctl)); 2931 if (error) { 2932 device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n", 2933 error); 2934 aac_release_sync_fib(sc); 2935 return; 2936 } 2937 2938 vmi_resp = (struct aac_vmi_businf_resp *)&fib->data[0]; 2939 if (vmi_resp->Status != ST_OK) { 2940 device_printf(sc->aac_dev, "VM_Ioctl returned %d\n", 2941 vmi_resp->Status); 2942 aac_release_sync_fib(sc); 2943 return; 2944 } 2945 2946 bcopy(&vmi_resp->BusInf, &businfo, sizeof(struct aac_getbusinf)); 2947 aac_release_sync_fib(sc); 2948 2949 found = 0; 2950 for (i = 0; i < businfo.BusCount; i++) { 2951 if (businfo.BusValid[i] != AAC_BUS_VALID) 2952 continue; 2953 2954 caminf = (struct aac_sim *)malloc( sizeof(struct aac_sim), 2955 M_AACBUF, M_NOWAIT | M_ZERO); 2956 if (caminf == NULL) 2957 continue; 2958 2959 child = device_add_child(sc->aac_dev, "aacp", -1); 2960 if (child == NULL) { 2961 device_printf(sc->aac_dev, "device_add_child failed\n"); 2962 continue; 2963 } 2964 2965 caminf->TargetsPerBus = businfo.TargetsPerBus; 2966 caminf->BusNumber = i; 2967 caminf->InitiatorBusId = businfo.InitiatorBusId[i]; 2968 caminf->aac_sc = sc; 2969 caminf->sim_dev = child; 2970 2971 device_set_ivars(child, caminf); 2972 device_set_desc(child, "SCSI Passthrough Bus"); 2973 TAILQ_INSERT_TAIL(&sc->aac_sim_tqh, caminf, sim_link); 2974 2975 found = 1; 2976 } 2977 2978 if (found) 2979 bus_generic_attach(sc->aac_dev); 2980 2981 return; 2982} 2983