aac.c revision 125542
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 125542 2004-02-07 03:26:38Z 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 183static struct cdevsw aac_cdevsw = { 184 .d_open = aac_open, 185 .d_close = aac_close, 186 .d_ioctl = aac_ioctl, 187 .d_poll = aac_poll, 188 .d_name = "aac", 189}; 190 191MALLOC_DEFINE(M_AACBUF, "aacbuf", "Buffers for the AAC driver"); 192 193/* sysctl node */ 194SYSCTL_NODE(_hw, OID_AUTO, aac, CTLFLAG_RD, 0, "AAC driver parameters"); 195 196/* 197 * Device Interface 198 */ 199 200/* 201 * Initialise the controller and softc 202 */ 203int 204aac_attach(struct aac_softc *sc) 205{ 206 int error, unit; 207 208 debug_called(1); 209 210 /* 211 * Initialise per-controller queues. 212 */ 213 aac_initq_free(sc); 214 aac_initq_ready(sc); 215 aac_initq_busy(sc); 216 aac_initq_bio(sc); 217 218 /* 219 * Initialise command-completion task. 220 */ 221 TASK_INIT(&sc->aac_task_complete, 0, aac_complete, sc); 222 223 /* disable interrupts before we enable anything */ 224 AAC_MASK_INTERRUPTS(sc); 225 226 /* mark controller as suspended until we get ourselves organised */ 227 sc->aac_state |= AAC_STATE_SUSPEND; 228 229 /* 230 * Check that the firmware on the card is supported. 231 */ 232 if ((error = aac_check_firmware(sc)) != 0) 233 return(error); 234 235 /* 236 * Initialize locks 237 */ 238 AAC_LOCK_INIT(&sc->aac_sync_lock, "AAC sync FIB lock"); 239 AAC_LOCK_INIT(&sc->aac_aifq_lock, "AAC AIF lock"); 240 AAC_LOCK_INIT(&sc->aac_io_lock, "AAC I/O lock"); 241 AAC_LOCK_INIT(&sc->aac_container_lock, "AAC container lock"); 242 TAILQ_INIT(&sc->aac_container_tqh); 243 244 /* Initialize the local AIF queue pointers */ 245 sc->aac_aifq_head = sc->aac_aifq_tail = AAC_AIFQ_LENGTH; 246 247 /* 248 * Initialise the adapter. 249 */ 250 if ((error = aac_init(sc)) != 0) 251 return(error); 252 253 /* 254 * Print a little information about the controller. 255 */ 256 aac_describe_controller(sc); 257 258 /* 259 * Register to probe our containers later. 260 */ 261 sc->aac_ich.ich_func = aac_startup; 262 sc->aac_ich.ich_arg = sc; 263 if (config_intrhook_establish(&sc->aac_ich) != 0) { 264 device_printf(sc->aac_dev, 265 "can't establish configuration hook\n"); 266 return(ENXIO); 267 } 268 269 /* 270 * Make the control device. 271 */ 272 unit = device_get_unit(sc->aac_dev); 273 sc->aac_dev_t = make_dev(&aac_cdevsw, unit, UID_ROOT, GID_OPERATOR, 274 0640, "aac%d", unit); 275 (void)make_dev_alias(sc->aac_dev_t, "afa%d", unit); 276 (void)make_dev_alias(sc->aac_dev_t, "hpn%d", unit); 277 sc->aac_dev_t->si_drv1 = sc; 278 279 /* Create the AIF thread */ 280 if (kthread_create((void(*)(void *))aac_command_thread, sc, 281 &sc->aifthread, 0, 0, "aac%daif", unit)) 282 panic("Could not create AIF thread\n"); 283 284 /* Register the shutdown method to only be called post-dump */ 285 if ((sc->eh = EVENTHANDLER_REGISTER(shutdown_final, aac_shutdown, 286 sc->aac_dev, SHUTDOWN_PRI_DEFAULT)) == NULL) 287 device_printf(sc->aac_dev, 288 "shutdown event registration failed\n"); 289 290 /* Register with CAM for the non-DASD devices */ 291 if ((sc->flags & AAC_FLAGS_ENABLE_CAM) != 0) { 292 TAILQ_INIT(&sc->aac_sim_tqh); 293 aac_get_bus_info(sc); 294 } 295 296 return(0); 297} 298 299/* 300 * Probe for containers, create disks. 301 */ 302static void 303aac_startup(void *arg) 304{ 305 struct aac_softc *sc; 306 struct aac_fib *fib; 307 struct aac_mntinfo *mi; 308 struct aac_mntinforesp *mir = NULL; 309 int count = 0, i = 0; 310 311 debug_called(1); 312 313 sc = (struct aac_softc *)arg; 314 315 /* disconnect ourselves from the intrhook chain */ 316 config_intrhook_disestablish(&sc->aac_ich); 317 318 aac_alloc_sync_fib(sc, &fib, 0); 319 mi = (struct aac_mntinfo *)&fib->data[0]; 320 321 /* loop over possible containers */ 322 do { 323 /* request information on this container */ 324 bzero(mi, sizeof(struct aac_mntinfo)); 325 mi->Command = VM_NameServe; 326 mi->MntType = FT_FILESYS; 327 mi->MntCount = i; 328 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 329 sizeof(struct aac_mntinfo))) { 330 printf("error probing container %d", i); 331 continue; 332 } 333 334 mir = (struct aac_mntinforesp *)&fib->data[0]; 335 /* XXX Need to check if count changed */ 336 count = mir->MntRespCount; 337 aac_add_container(sc, mir, 0); 338 i++; 339 } while ((i < count) && (i < AAC_MAX_CONTAINERS)); 340 341 aac_release_sync_fib(sc); 342 343 /* poke the bus to actually attach the child devices */ 344 if (bus_generic_attach(sc->aac_dev)) 345 device_printf(sc->aac_dev, "bus_generic_attach failed\n"); 346 347 /* mark the controller up */ 348 sc->aac_state &= ~AAC_STATE_SUSPEND; 349 350 /* enable interrupts now */ 351 AAC_UNMASK_INTERRUPTS(sc); 352} 353 354/* 355 * Create a device to respresent a new container 356 */ 357static void 358aac_add_container(struct aac_softc *sc, struct aac_mntinforesp *mir, int f) 359{ 360 struct aac_container *co; 361 device_t child; 362 363 /* 364 * Check container volume type for validity. Note that many of 365 * the possible types may never show up. 366 */ 367 if ((mir->Status == ST_OK) && (mir->MntTable[0].VolType != CT_NONE)) { 368 co = (struct aac_container *)malloc(sizeof *co, M_AACBUF, 369 M_NOWAIT | M_ZERO); 370 if (co == NULL) 371 panic("Out of memory?!\n"); 372 debug(1, "id %x name '%.16s' size %u type %d", 373 mir->MntTable[0].ObjectId, 374 mir->MntTable[0].FileSystemName, 375 mir->MntTable[0].Capacity, mir->MntTable[0].VolType); 376 377 if ((child = device_add_child(sc->aac_dev, "aacd", -1)) == NULL) 378 device_printf(sc->aac_dev, "device_add_child failed\n"); 379 else 380 device_set_ivars(child, co); 381 device_set_desc(child, aac_describe_code(aac_container_types, 382 mir->MntTable[0].VolType)); 383 co->co_disk = child; 384 co->co_found = f; 385 bcopy(&mir->MntTable[0], &co->co_mntobj, 386 sizeof(struct aac_mntobj)); 387 AAC_LOCK_ACQUIRE(&sc->aac_container_lock); 388 TAILQ_INSERT_TAIL(&sc->aac_container_tqh, co, co_link); 389 AAC_LOCK_RELEASE(&sc->aac_container_lock); 390 } 391} 392 393/* 394 * Free all of the resources associated with (sc) 395 * 396 * Should not be called if the controller is active. 397 */ 398void 399aac_free(struct aac_softc *sc) 400{ 401 402 debug_called(1); 403 404 /* remove the control device */ 405 if (sc->aac_dev_t != NULL) 406 destroy_dev(sc->aac_dev_t); 407 408 /* throw away any FIB buffers, discard the FIB DMA tag */ 409 aac_free_commands(sc); 410 if (sc->aac_fib_dmat) 411 bus_dma_tag_destroy(sc->aac_fib_dmat); 412 413 free(sc->aac_commands, M_AACBUF); 414 415 /* destroy the common area */ 416 if (sc->aac_common) { 417 bus_dmamap_unload(sc->aac_common_dmat, sc->aac_common_dmamap); 418 bus_dmamem_free(sc->aac_common_dmat, sc->aac_common, 419 sc->aac_common_dmamap); 420 } 421 if (sc->aac_common_dmat) 422 bus_dma_tag_destroy(sc->aac_common_dmat); 423 424 /* disconnect the interrupt handler */ 425 if (sc->aac_intr) 426 bus_teardown_intr(sc->aac_dev, sc->aac_irq, sc->aac_intr); 427 if (sc->aac_irq != NULL) 428 bus_release_resource(sc->aac_dev, SYS_RES_IRQ, sc->aac_irq_rid, 429 sc->aac_irq); 430 431 /* destroy data-transfer DMA tag */ 432 if (sc->aac_buffer_dmat) 433 bus_dma_tag_destroy(sc->aac_buffer_dmat); 434 435 /* destroy the parent DMA tag */ 436 if (sc->aac_parent_dmat) 437 bus_dma_tag_destroy(sc->aac_parent_dmat); 438 439 /* release the register window mapping */ 440 if (sc->aac_regs_resource != NULL) 441 bus_release_resource(sc->aac_dev, SYS_RES_MEMORY, 442 sc->aac_regs_rid, sc->aac_regs_resource); 443} 444 445/* 446 * Disconnect from the controller completely, in preparation for unload. 447 */ 448int 449aac_detach(device_t dev) 450{ 451 struct aac_softc *sc; 452 struct aac_container *co; 453 struct aac_sim *sim; 454 int error; 455 456 debug_called(1); 457 458 sc = device_get_softc(dev); 459 460 if (sc->aac_state & AAC_STATE_OPEN) 461 return(EBUSY); 462 463 /* Remove the child containers */ 464 while ((co = TAILQ_FIRST(&sc->aac_container_tqh)) != NULL) { 465 error = device_delete_child(dev, co->co_disk); 466 if (error) 467 return (error); 468 TAILQ_REMOVE(&sc->aac_container_tqh, co, co_link); 469 free(co, M_AACBUF); 470 } 471 472 /* Remove the CAM SIMs */ 473 while ((sim = TAILQ_FIRST(&sc->aac_sim_tqh)) != NULL) { 474 TAILQ_REMOVE(&sc->aac_sim_tqh, sim, sim_link); 475 error = device_delete_child(dev, sim->sim_dev); 476 if (error) 477 return (error); 478 free(sim, M_AACBUF); 479 } 480 481 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) { 482 sc->aifflags |= AAC_AIFFLAGS_EXIT; 483 wakeup(sc->aifthread); 484 tsleep(sc->aac_dev, PUSER | PCATCH, "aacdch", 30 * hz); 485 } 486 487 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) 488 panic("Cannot shutdown AIF thread\n"); 489 490 if ((error = aac_shutdown(dev))) 491 return(error); 492 493 EVENTHANDLER_DEREGISTER(shutdown_final, sc->eh); 494 495 aac_free(sc); 496 497 return(0); 498} 499 500/* 501 * Bring the controller down to a dormant state and detach all child devices. 502 * 503 * This function is called before detach or system shutdown. 504 * 505 * Note that we can assume that the bioq on the controller is empty, as we won't 506 * allow shutdown if any device is open. 507 */ 508int 509aac_shutdown(device_t dev) 510{ 511 struct aac_softc *sc; 512 struct aac_fib *fib; 513 struct aac_close_command *cc; 514 515 debug_called(1); 516 517 sc = device_get_softc(dev); 518 519 sc->aac_state |= AAC_STATE_SUSPEND; 520 521 /* 522 * Send a Container shutdown followed by a HostShutdown FIB to the 523 * controller to convince it that we don't want to talk to it anymore. 524 * We've been closed and all I/O completed already 525 */ 526 device_printf(sc->aac_dev, "shutting down controller..."); 527 528 aac_alloc_sync_fib(sc, &fib, AAC_SYNC_LOCK_FORCE); 529 cc = (struct aac_close_command *)&fib->data[0]; 530 531 bzero(cc, sizeof(struct aac_close_command)); 532 cc->Command = VM_CloseAll; 533 cc->ContainerId = 0xffffffff; 534 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 535 sizeof(struct aac_close_command))) 536 printf("FAILED.\n"); 537 else 538 printf("done\n"); 539#if 0 540 else { 541 fib->data[0] = 0; 542 /* 543 * XXX Issuing this command to the controller makes it shut down 544 * but also keeps it from coming back up without a reset of the 545 * PCI bus. This is not desirable if you are just unloading the 546 * driver module with the intent to reload it later. 547 */ 548 if (aac_sync_fib(sc, FsaHostShutdown, AAC_FIBSTATE_SHUTDOWN, 549 fib, 1)) { 550 printf("FAILED.\n"); 551 } else { 552 printf("done.\n"); 553 } 554 } 555#endif 556 557 AAC_MASK_INTERRUPTS(sc); 558 559 return(0); 560} 561 562/* 563 * Bring the controller to a quiescent state, ready for system suspend. 564 */ 565int 566aac_suspend(device_t dev) 567{ 568 struct aac_softc *sc; 569 570 debug_called(1); 571 572 sc = device_get_softc(dev); 573 574 sc->aac_state |= AAC_STATE_SUSPEND; 575 576 AAC_MASK_INTERRUPTS(sc); 577 return(0); 578} 579 580/* 581 * Bring the controller back to a state ready for operation. 582 */ 583int 584aac_resume(device_t dev) 585{ 586 struct aac_softc *sc; 587 588 debug_called(1); 589 590 sc = device_get_softc(dev); 591 592 sc->aac_state &= ~AAC_STATE_SUSPEND; 593 AAC_UNMASK_INTERRUPTS(sc); 594 return(0); 595} 596 597/* 598 * Take an interrupt. 599 */ 600void 601aac_intr(void *arg) 602{ 603 struct aac_softc *sc; 604 u_int16_t reason; 605 606 debug_called(2); 607 608 sc = (struct aac_softc *)arg; 609 610 /* 611 * Read the status register directly. This is faster than taking the 612 * driver lock and reading the queues directly. It also saves having 613 * to turn parts of the driver lock into a spin mutex, which would be 614 * ugly. 615 */ 616 reason = AAC_GET_ISTATUS(sc); 617 AAC_CLEAR_ISTATUS(sc, reason); 618 619 /* handle completion processing */ 620 if (reason & AAC_DB_RESPONSE_READY) 621 taskqueue_enqueue_fast(taskqueue_fast, &sc->aac_task_complete); 622 623 /* controller wants to talk to us */ 624 if (reason & (AAC_DB_PRINTF | AAC_DB_COMMAND_READY)) { 625 /* 626 * XXX Make sure that we don't get fooled by strange messages 627 * that start with a NULL. 628 */ 629 if ((reason & AAC_DB_PRINTF) && 630 (sc->aac_common->ac_printf[0] == 0)) 631 sc->aac_common->ac_printf[0] = 32; 632 633 /* 634 * This might miss doing the actual wakeup. However, the 635 * msleep that this is waking up has a timeout, so it will 636 * wake up eventually. AIFs and printfs are low enough 637 * priority that they can handle hanging out for a few seconds 638 * if needed. 639 */ 640 wakeup(sc->aifthread); 641 } 642} 643 644/* 645 * Command Processing 646 */ 647 648/* 649 * Start as much queued I/O as possible on the controller 650 */ 651void 652aac_startio(struct aac_softc *sc) 653{ 654 struct aac_command *cm; 655 656 debug_called(2); 657 658 if (sc->flags & AAC_QUEUE_FRZN) 659 return; 660 661 for (;;) { 662 /* 663 * Try to get a command that's been put off for lack of 664 * resources 665 */ 666 cm = aac_dequeue_ready(sc); 667 668 /* 669 * Try to build a command off the bio queue (ignore error 670 * return) 671 */ 672 if (cm == NULL) 673 aac_bio_command(sc, &cm); 674 675 /* nothing to do? */ 676 if (cm == NULL) 677 break; 678 679 /* try to give the command to the controller */ 680 if (aac_map_command(cm) == EBUSY) { 681 /* put it on the ready queue for later */ 682 aac_requeue_ready(cm); 683 break; 684 } 685 } 686} 687 688/* 689 * Deliver a command to the controller; allocate controller resources at the 690 * last moment when possible. 691 */ 692static int 693aac_map_command(struct aac_command *cm) 694{ 695 struct aac_softc *sc; 696 int error; 697 698 debug_called(2); 699 700 sc = cm->cm_sc; 701 error = 0; 702 703 /* don't map more than once */ 704 if (cm->cm_flags & AAC_CMD_MAPPED) 705 return (0); 706 707 if (cm->cm_datalen != 0) { 708 error = bus_dmamap_load(sc->aac_buffer_dmat, cm->cm_datamap, 709 cm->cm_data, cm->cm_datalen, 710 aac_map_command_sg, cm, 0); 711 if (error == EINPROGRESS) { 712 debug(1, "freezing queue\n"); 713 sc->flags |= AAC_QUEUE_FRZN; 714 error = 0; 715 } 716 } else { 717 aac_map_command_sg(cm, NULL, 0, 0); 718 } 719 return (error); 720} 721 722/* 723 * Handle notification of one or more FIBs coming from the controller. 724 */ 725static void 726aac_command_thread(struct aac_softc *sc) 727{ 728 struct aac_fib *fib; 729 u_int32_t fib_size; 730 int size, retval; 731 732 debug_called(2); 733 734 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 735 sc->aifflags = AAC_AIFFLAGS_RUNNING; 736 737 while ((sc->aifflags & AAC_AIFFLAGS_EXIT) == 0) { 738 739 retval = 0; 740 if ((sc->aifflags & AAC_AIFFLAGS_PENDING) == 0) 741 retval = msleep(sc->aifthread, &sc->aac_io_lock, PRIBIO, 742 "aifthd", AAC_PERIODIC_INTERVAL * hz); 743 744 /* 745 * First see if any FIBs need to be allocated. This needs 746 * to be called without the driver lock because contigmalloc 747 * will grab Giant, and would result in an LOR. 748 */ 749 if ((sc->aifflags & AAC_AIFFLAGS_ALLOCFIBS) != 0) { 750 sc->aifflags &= ~AAC_AIFFLAGS_ALLOCFIBS; 751 AAC_LOCK_RELEASE(&sc->aac_io_lock); 752 aac_alloc_commands(sc); 753 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 754 aac_startio(sc); 755 } 756 757 /* 758 * While we're here, check to see if any commands are stuck. 759 * This is pretty low-priority, so it's ok if it doesn't 760 * always fire. 761 */ 762 if (retval == EWOULDBLOCK) 763 aac_timeout(sc); 764 765 /* Check the hardware printf message buffer */ 766 if (sc->aac_common->ac_printf[0] != 0) 767 aac_print_printf(sc); 768 769 /* Also check to see if the adapter has a command for us. */ 770 while (aac_dequeue_fib(sc, AAC_HOST_NORM_CMD_QUEUE, 771 &fib_size, &fib) == 0) { 772 773 AAC_PRINT_FIB(sc, fib); 774 775 switch (fib->Header.Command) { 776 case AifRequest: 777 aac_handle_aif(sc, fib); 778 break; 779 default: 780 device_printf(sc->aac_dev, "unknown command " 781 "from controller\n"); 782 break; 783 } 784 785 if ((fib->Header.XferState == 0) || 786 (fib->Header.StructType != AAC_FIBTYPE_TFIB)) 787 break; 788 789 /* Return the AIF to the controller. */ 790 if (fib->Header.XferState & AAC_FIBSTATE_FROMADAP) { 791 fib->Header.XferState |= AAC_FIBSTATE_DONEHOST; 792 *(AAC_FSAStatus*)fib->data = ST_OK; 793 794 /* XXX Compute the Size field? */ 795 size = fib->Header.Size; 796 if (size > sizeof(struct aac_fib)) { 797 size = sizeof(struct aac_fib); 798 fib->Header.Size = size; 799 } 800 /* 801 * Since we did not generate this command, it 802 * cannot go through the normal 803 * enqueue->startio chain. 804 */ 805 aac_enqueue_response(sc, 806 AAC_ADAP_NORM_RESP_QUEUE, 807 fib); 808 } 809 } 810 } 811 sc->aifflags &= ~AAC_AIFFLAGS_RUNNING; 812 AAC_LOCK_RELEASE(&sc->aac_io_lock); 813 wakeup(sc->aac_dev); 814 815 mtx_lock(&Giant); 816 kthread_exit(0); 817} 818 819/* 820 * Process completed commands. 821 */ 822static void 823aac_complete(void *context, int pending) 824{ 825 struct aac_softc *sc; 826 struct aac_command *cm; 827 struct aac_fib *fib; 828 u_int32_t fib_size; 829 830 debug_called(2); 831 832 sc = (struct aac_softc *)context; 833 834 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 835 836 /* pull completed commands off the queue */ 837 for (;;) { 838 /* look for completed FIBs on our queue */ 839 if (aac_dequeue_fib(sc, AAC_HOST_NORM_RESP_QUEUE, &fib_size, 840 &fib)) 841 break; /* nothing to do */ 842 843 /* get the command, unmap and queue for later processing */ 844 cm = sc->aac_commands + fib->Header.SenderData; 845 if (cm == NULL) { 846 AAC_PRINT_FIB(sc, fib); 847 break; 848 } 849 850 aac_remove_busy(cm); 851 aac_unmap_command(cm); /* XXX defer? */ 852 cm->cm_flags |= AAC_CMD_COMPLETED; 853 854 /* is there a completion handler? */ 855 if (cm->cm_complete != NULL) { 856 cm->cm_complete(cm); 857 } else { 858 /* assume that someone is sleeping on this command */ 859 wakeup(cm); 860 } 861 } 862 863 /* see if we can start some more I/O */ 864 sc->flags &= ~AAC_QUEUE_FRZN; 865 aac_startio(sc); 866 867 AAC_LOCK_RELEASE(&sc->aac_io_lock); 868} 869 870/* 871 * Handle a bio submitted from a disk device. 872 */ 873void 874aac_submit_bio(struct bio *bp) 875{ 876 struct aac_disk *ad; 877 struct aac_softc *sc; 878 879 debug_called(2); 880 881 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 882 sc = ad->ad_controller; 883 884 /* queue the BIO and try to get some work done */ 885 aac_enqueue_bio(sc, bp); 886 aac_startio(sc); 887} 888 889/* 890 * Get a bio and build a command to go with it. 891 */ 892static int 893aac_bio_command(struct aac_softc *sc, struct aac_command **cmp) 894{ 895 struct aac_command *cm; 896 struct aac_fib *fib; 897 struct aac_disk *ad; 898 struct bio *bp; 899 900 debug_called(2); 901 902 /* get the resources we will need */ 903 cm = NULL; 904 bp = NULL; 905 if (aac_alloc_command(sc, &cm)) /* get a command */ 906 goto fail; 907 if ((bp = aac_dequeue_bio(sc)) == NULL) 908 goto fail; 909 910 /* fill out the command */ 911 cm->cm_data = (void *)bp->bio_data; 912 cm->cm_datalen = bp->bio_bcount; 913 cm->cm_complete = aac_bio_complete; 914 cm->cm_private = bp; 915 cm->cm_timestamp = time_second; 916 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 917 918 /* build the FIB */ 919 fib = cm->cm_fib; 920 fib->Header.Size = sizeof(struct aac_fib_header); 921 fib->Header.XferState = 922 AAC_FIBSTATE_HOSTOWNED | 923 AAC_FIBSTATE_INITIALISED | 924 AAC_FIBSTATE_EMPTY | 925 AAC_FIBSTATE_FROMHOST | 926 AAC_FIBSTATE_REXPECTED | 927 AAC_FIBSTATE_NORM | 928 AAC_FIBSTATE_ASYNC | 929 AAC_FIBSTATE_FAST_RESPONSE; 930 931 /* build the read/write request */ 932 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 933 934 if ((sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 935 fib->Header.Command = ContainerCommand; 936 if (bp->bio_cmd == BIO_READ) { 937 struct aac_blockread *br; 938 br = (struct aac_blockread *)&fib->data[0]; 939 br->Command = VM_CtBlockRead; 940 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 941 br->BlockNumber = bp->bio_pblkno; 942 br->ByteCount = bp->bio_bcount; 943 fib->Header.Size += sizeof(struct aac_blockread); 944 cm->cm_sgtable = &br->SgMap; 945 cm->cm_flags |= AAC_CMD_DATAIN; 946 } else { 947 struct aac_blockwrite *bw; 948 bw = (struct aac_blockwrite *)&fib->data[0]; 949 bw->Command = VM_CtBlockWrite; 950 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 951 bw->BlockNumber = bp->bio_pblkno; 952 bw->ByteCount = bp->bio_bcount; 953 bw->Stable = CUNSTABLE; 954 fib->Header.Size += sizeof(struct aac_blockwrite); 955 cm->cm_flags |= AAC_CMD_DATAOUT; 956 cm->cm_sgtable = &bw->SgMap; 957 } 958 } else { 959 fib->Header.Command = ContainerCommand64; 960 if (bp->bio_cmd == BIO_READ) { 961 struct aac_blockread64 *br; 962 br = (struct aac_blockread64 *)&fib->data[0]; 963 br->Command = VM_CtHostRead64; 964 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 965 br->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 966 br->BlockNumber = bp->bio_pblkno; 967 br->Pad = 0; 968 br->Flags = 0; 969 fib->Header.Size += sizeof(struct aac_blockread64); 970 cm->cm_flags |= AAC_CMD_DATAOUT; 971 (struct aac_sg_table64 *)cm->cm_sgtable = &br->SgMap64; 972 } else { 973 struct aac_blockwrite64 *bw; 974 bw = (struct aac_blockwrite64 *)&fib->data[0]; 975 bw->Command = VM_CtHostWrite64; 976 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 977 bw->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 978 bw->BlockNumber = bp->bio_pblkno; 979 bw->Pad = 0; 980 bw->Flags = 0; 981 fib->Header.Size += sizeof(struct aac_blockwrite64); 982 cm->cm_flags |= AAC_CMD_DATAIN; 983 (struct aac_sg_table64 *)cm->cm_sgtable = &bw->SgMap64; 984 } 985 } 986 987 *cmp = cm; 988 return(0); 989 990fail: 991 if (bp != NULL) 992 aac_enqueue_bio(sc, bp); 993 if (cm != NULL) 994 aac_release_command(cm); 995 return(ENOMEM); 996} 997 998/* 999 * Handle a bio-instigated command that has been completed. 1000 */ 1001static void 1002aac_bio_complete(struct aac_command *cm) 1003{ 1004 struct aac_blockread_response *brr; 1005 struct aac_blockwrite_response *bwr; 1006 struct bio *bp; 1007 AAC_FSAStatus status; 1008 1009 /* fetch relevant status and then release the command */ 1010 bp = (struct bio *)cm->cm_private; 1011 if (bp->bio_cmd == BIO_READ) { 1012 brr = (struct aac_blockread_response *)&cm->cm_fib->data[0]; 1013 status = brr->Status; 1014 } else { 1015 bwr = (struct aac_blockwrite_response *)&cm->cm_fib->data[0]; 1016 status = bwr->Status; 1017 } 1018 aac_release_command(cm); 1019 1020 /* fix up the bio based on status */ 1021 if (status == ST_OK) { 1022 bp->bio_resid = 0; 1023 } else { 1024 bp->bio_error = EIO; 1025 bp->bio_flags |= BIO_ERROR; 1026 /* pass an error string out to the disk layer */ 1027 bp->bio_driver1 = aac_describe_code(aac_command_status_table, 1028 status); 1029 } 1030 aac_biodone(bp); 1031} 1032 1033/* 1034 * Submit a command to the controller, return when it completes. 1035 * XXX This is very dangerous! If the card has gone out to lunch, we could 1036 * be stuck here forever. At the same time, signals are not caught 1037 * because there is a risk that a signal could wakeup the tsleep before 1038 * the card has a chance to complete the command. The passed in timeout 1039 * is ignored for the same reason. Since there is no way to cancel a 1040 * command in progress, we should probably create a 'dead' queue where 1041 * commands go that have been interrupted/timed-out/etc, that keeps them 1042 * out of the free pool. That way, if the card is just slow, it won't 1043 * spam the memory of a command that has been recycled. 1044 */ 1045static int 1046aac_wait_command(struct aac_command *cm, int timeout) 1047{ 1048 struct aac_softc *sc; 1049 int error = 0; 1050 1051 debug_called(2); 1052 1053 sc = cm->cm_sc; 1054 1055 /* Put the command on the ready queue and get things going */ 1056 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 1057 aac_enqueue_ready(cm); 1058 aac_startio(sc); 1059 while (!(cm->cm_flags & AAC_CMD_COMPLETED) && (error != EWOULDBLOCK)) { 1060 error = msleep(cm, &sc->aac_io_lock, PRIBIO, "aacwait", 0); 1061 } 1062 return(error); 1063} 1064 1065/* 1066 *Command Buffer Management 1067 */ 1068 1069/* 1070 * Allocate a command. 1071 */ 1072int 1073aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp) 1074{ 1075 struct aac_command *cm; 1076 1077 debug_called(3); 1078 1079 if ((cm = aac_dequeue_free(sc)) == NULL) { 1080 if (sc->total_fibs < sc->aac_max_fibs) { 1081 sc->aifflags |= AAC_AIFFLAGS_ALLOCFIBS; 1082 wakeup(sc->aifthread); 1083 } 1084 return (EBUSY); 1085 } 1086 1087 *cmp = cm; 1088 return(0); 1089} 1090 1091/* 1092 * Release a command back to the freelist. 1093 */ 1094void 1095aac_release_command(struct aac_command *cm) 1096{ 1097 debug_called(3); 1098 1099 /* (re)initialise the command/FIB */ 1100 cm->cm_sgtable = NULL; 1101 cm->cm_flags = 0; 1102 cm->cm_complete = NULL; 1103 cm->cm_private = NULL; 1104 cm->cm_fib->Header.XferState = AAC_FIBSTATE_EMPTY; 1105 cm->cm_fib->Header.StructType = AAC_FIBTYPE_TFIB; 1106 cm->cm_fib->Header.Flags = 0; 1107 cm->cm_fib->Header.SenderSize = sizeof(struct aac_fib); 1108 1109 /* 1110 * These are duplicated in aac_start to cover the case where an 1111 * intermediate stage may have destroyed them. They're left 1112 * initialised here for debugging purposes only. 1113 */ 1114 cm->cm_fib->Header.ReceiverFibAddress = (u_int32_t)cm->cm_fibphys; 1115 cm->cm_fib->Header.SenderData = 0; 1116 1117 aac_enqueue_free(cm); 1118} 1119 1120/* 1121 * Map helper for command/FIB allocation. 1122 */ 1123static void 1124aac_map_command_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1125{ 1126 uint32_t *fibphys; 1127 1128 fibphys = (uint32_t *)arg; 1129 1130 debug_called(3); 1131 1132 *fibphys = segs[0].ds_addr; 1133} 1134 1135/* 1136 * Allocate and initialise commands/FIBs for this adapter. 1137 */ 1138static int 1139aac_alloc_commands(struct aac_softc *sc) 1140{ 1141 struct aac_command *cm; 1142 struct aac_fibmap *fm; 1143 uint32_t fibphys; 1144 int i, error; 1145 1146 debug_called(2); 1147 1148 if (sc->total_fibs + AAC_FIB_COUNT > sc->aac_max_fibs) 1149 return (ENOMEM); 1150 1151 fm = malloc(sizeof(struct aac_fibmap), M_AACBUF, M_NOWAIT|M_ZERO); 1152 if (fm == NULL) 1153 return (ENOMEM); 1154 1155 /* allocate the FIBs in DMAable memory and load them */ 1156 if (bus_dmamem_alloc(sc->aac_fib_dmat, (void **)&fm->aac_fibs, 1157 BUS_DMA_NOWAIT, &fm->aac_fibmap)) { 1158 device_printf(sc->aac_dev, 1159 "Not enough contiguous memory available.\n"); 1160 free(fm, M_AACBUF); 1161 return (ENOMEM); 1162 } 1163 1164 /* Ignore errors since this doesn't bounce */ 1165 (void)bus_dmamap_load(sc->aac_fib_dmat, fm->aac_fibmap, fm->aac_fibs, 1166 AAC_FIB_COUNT * sizeof(struct aac_fib), 1167 aac_map_command_helper, &fibphys, 0); 1168 1169 /* initialise constant fields in the command structure */ 1170 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 1171 bzero(fm->aac_fibs, AAC_FIB_COUNT * sizeof(struct aac_fib)); 1172 for (i = 0; i < AAC_FIB_COUNT; i++) { 1173 cm = sc->aac_commands + sc->total_fibs; 1174 fm->aac_commands = cm; 1175 cm->cm_sc = sc; 1176 cm->cm_fib = fm->aac_fibs + i; 1177 cm->cm_fibphys = fibphys + (i * sizeof(struct aac_fib)); 1178 cm->cm_index = sc->total_fibs; 1179 1180 if ((error = bus_dmamap_create(sc->aac_buffer_dmat, 0, 1181 &cm->cm_datamap)) == 0) 1182 aac_release_command(cm); 1183 else 1184 break; 1185 sc->total_fibs++; 1186 } 1187 1188 if (i > 0) { 1189 TAILQ_INSERT_TAIL(&sc->aac_fibmap_tqh, fm, fm_link); 1190 debug(1, "total_fibs= %d\n", sc->total_fibs); 1191 AAC_LOCK_RELEASE(&sc->aac_io_lock); 1192 return (0); 1193 } 1194 1195 AAC_LOCK_RELEASE(&sc->aac_io_lock); 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 /* wrap the pi so the following test works */ 1880 if (pi >= aac_qinfo[queue].size) 1881 pi = 0; 1882 1883 notify = 0; 1884 if (ci == pi + 1) 1885 notify++; 1886 1887 /* wrap the queue? */ 1888 if (ci >= aac_qinfo[queue].size) 1889 ci = 0; 1890 1891 /* fetch the entry */ 1892 *fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size; 1893 1894 switch (queue) { 1895 case AAC_HOST_NORM_CMD_QUEUE: 1896 case AAC_HOST_HIGH_CMD_QUEUE: 1897 /* 1898 * The aq_fib_addr is only 32 bits wide so it can't be counted 1899 * on to hold an address. For AIF's, the adapter assumes 1900 * that it's giving us an address into the array of AIF fibs. 1901 * Therefore, we have to convert it to an index. 1902 */ 1903 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr / 1904 sizeof(struct aac_fib); 1905 *fib_addr = &sc->aac_common->ac_fibs[fib_index]; 1906 break; 1907 1908 case AAC_HOST_NORM_RESP_QUEUE: 1909 case AAC_HOST_HIGH_RESP_QUEUE: 1910 { 1911 struct aac_command *cm; 1912 1913 /* 1914 * As above, an index is used instead of an actual address. 1915 * Gotta shift the index to account for the fast response 1916 * bit. No other correction is needed since this value was 1917 * originally provided by the driver via the SenderFibAddress 1918 * field. 1919 */ 1920 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr; 1921 cm = sc->aac_commands + (fib_index >> 1); 1922 *fib_addr = cm->cm_fib; 1923 1924 /* 1925 * Is this a fast response? If it is, update the fib fields in 1926 * local memory since the whole fib isn't DMA'd back up. 1927 */ 1928 if (fib_index & 0x01) { 1929 (*fib_addr)->Header.XferState |= AAC_FIBSTATE_DONEADAP; 1930 *((u_int32_t*)((*fib_addr)->data)) = AAC_ERROR_NORMAL; 1931 } 1932 break; 1933 } 1934 default: 1935 panic("Invalid queue in aac_dequeue_fib()"); 1936 break; 1937 } 1938 1939 /* update consumer index */ 1940 sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1; 1941 1942 /* if we have made the queue un-full, notify the adapter */ 1943 if (notify && (aac_qinfo[queue].notify != 0)) 1944 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1945 error = 0; 1946 1947out: 1948 return(error); 1949} 1950 1951/* 1952 * Put our response to an Adapter Initialed Fib on the response queue 1953 */ 1954static int 1955aac_enqueue_response(struct aac_softc *sc, int queue, struct aac_fib *fib) 1956{ 1957 u_int32_t pi, ci; 1958 int error; 1959 u_int32_t fib_size; 1960 u_int32_t fib_addr; 1961 1962 debug_called(1); 1963 1964 /* Tell the adapter where the FIB is */ 1965 fib_size = fib->Header.Size; 1966 fib_addr = fib->Header.SenderFibAddress; 1967 fib->Header.ReceiverFibAddress = fib_addr; 1968 1969 /* get the producer/consumer indices */ 1970 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1971 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1972 1973 /* wrap the queue? */ 1974 if (pi >= aac_qinfo[queue].size) 1975 pi = 0; 1976 1977 /* check for queue full */ 1978 if ((pi + 1) == ci) { 1979 error = EBUSY; 1980 goto out; 1981 } 1982 1983 /* populate queue entry */ 1984 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1985 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1986 1987 /* update producer index */ 1988 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1989 1990 /* notify the adapter if we know how */ 1991 if (aac_qinfo[queue].notify != 0) 1992 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1993 1994 error = 0; 1995 1996out: 1997 return(error); 1998} 1999 2000/* 2001 * Check for commands that have been outstanding for a suspiciously long time, 2002 * and complain about them. 2003 */ 2004static void 2005aac_timeout(struct aac_softc *sc) 2006{ 2007 struct aac_command *cm; 2008 time_t deadline; 2009 2010 /* 2011 * Traverse the busy command list, bitch about late commands once 2012 * only. 2013 */ 2014 deadline = time_second - AAC_CMD_TIMEOUT; 2015 TAILQ_FOREACH(cm, &sc->aac_busy, cm_link) { 2016 if ((cm->cm_timestamp < deadline) 2017 /* && !(cm->cm_flags & AAC_CMD_TIMEDOUT) */) { 2018 cm->cm_flags |= AAC_CMD_TIMEDOUT; 2019 device_printf(sc->aac_dev, 2020 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", 2021 cm, (int)(time_second-cm->cm_timestamp)); 2022 AAC_PRINT_FIB(sc, cm->cm_fib); 2023 } 2024 } 2025 2026 return; 2027} 2028 2029/* 2030 * Interface Function Vectors 2031 */ 2032 2033/* 2034 * Read the current firmware status word. 2035 */ 2036static int 2037aac_sa_get_fwstatus(struct aac_softc *sc) 2038{ 2039 debug_called(3); 2040 2041 return(AAC_GETREG4(sc, AAC_SA_FWSTATUS)); 2042} 2043 2044static int 2045aac_rx_get_fwstatus(struct aac_softc *sc) 2046{ 2047 debug_called(3); 2048 2049 return(AAC_GETREG4(sc, AAC_RX_FWSTATUS)); 2050} 2051 2052static int 2053aac_fa_get_fwstatus(struct aac_softc *sc) 2054{ 2055 int val; 2056 2057 debug_called(3); 2058 2059 val = AAC_GETREG4(sc, AAC_FA_FWSTATUS); 2060 return (val); 2061} 2062 2063/* 2064 * Notify the controller of a change in a given queue 2065 */ 2066 2067static void 2068aac_sa_qnotify(struct aac_softc *sc, int qbit) 2069{ 2070 debug_called(3); 2071 2072 AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit); 2073} 2074 2075static void 2076aac_rx_qnotify(struct aac_softc *sc, int qbit) 2077{ 2078 debug_called(3); 2079 2080 AAC_SETREG4(sc, AAC_RX_IDBR, qbit); 2081} 2082 2083static void 2084aac_fa_qnotify(struct aac_softc *sc, int qbit) 2085{ 2086 debug_called(3); 2087 2088 AAC_SETREG2(sc, AAC_FA_DOORBELL1, qbit); 2089 AAC_FA_HACK(sc); 2090} 2091 2092/* 2093 * Get the interrupt reason bits 2094 */ 2095static int 2096aac_sa_get_istatus(struct aac_softc *sc) 2097{ 2098 debug_called(3); 2099 2100 return(AAC_GETREG2(sc, AAC_SA_DOORBELL0)); 2101} 2102 2103static int 2104aac_rx_get_istatus(struct aac_softc *sc) 2105{ 2106 debug_called(3); 2107 2108 return(AAC_GETREG4(sc, AAC_RX_ODBR)); 2109} 2110 2111static int 2112aac_fa_get_istatus(struct aac_softc *sc) 2113{ 2114 int val; 2115 2116 debug_called(3); 2117 2118 val = AAC_GETREG2(sc, AAC_FA_DOORBELL0); 2119 return (val); 2120} 2121 2122/* 2123 * Clear some interrupt reason bits 2124 */ 2125static void 2126aac_sa_clear_istatus(struct aac_softc *sc, int mask) 2127{ 2128 debug_called(3); 2129 2130 AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask); 2131} 2132 2133static void 2134aac_rx_clear_istatus(struct aac_softc *sc, int mask) 2135{ 2136 debug_called(3); 2137 2138 AAC_SETREG4(sc, AAC_RX_ODBR, mask); 2139} 2140 2141static void 2142aac_fa_clear_istatus(struct aac_softc *sc, int mask) 2143{ 2144 debug_called(3); 2145 2146 AAC_SETREG2(sc, AAC_FA_DOORBELL0_CLEAR, mask); 2147 AAC_FA_HACK(sc); 2148} 2149 2150/* 2151 * Populate the mailbox and set the command word 2152 */ 2153static void 2154aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2155 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2156{ 2157 debug_called(4); 2158 2159 AAC_SETREG4(sc, AAC_SA_MAILBOX, command); 2160 AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0); 2161 AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1); 2162 AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2); 2163 AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3); 2164} 2165 2166static void 2167aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 2168 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2169{ 2170 debug_called(4); 2171 2172 AAC_SETREG4(sc, AAC_RX_MAILBOX, command); 2173 AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0); 2174 AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1); 2175 AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2); 2176 AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3); 2177} 2178 2179static void 2180aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2181 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2182{ 2183 debug_called(4); 2184 2185 AAC_SETREG4(sc, AAC_FA_MAILBOX, command); 2186 AAC_FA_HACK(sc); 2187 AAC_SETREG4(sc, AAC_FA_MAILBOX + 4, arg0); 2188 AAC_FA_HACK(sc); 2189 AAC_SETREG4(sc, AAC_FA_MAILBOX + 8, arg1); 2190 AAC_FA_HACK(sc); 2191 AAC_SETREG4(sc, AAC_FA_MAILBOX + 12, arg2); 2192 AAC_FA_HACK(sc); 2193 AAC_SETREG4(sc, AAC_FA_MAILBOX + 16, arg3); 2194 AAC_FA_HACK(sc); 2195} 2196 2197/* 2198 * Fetch the immediate command status word 2199 */ 2200static int 2201aac_sa_get_mailbox(struct aac_softc *sc, int mb) 2202{ 2203 debug_called(4); 2204 2205 return(AAC_GETREG4(sc, AAC_SA_MAILBOX + (mb * 4))); 2206} 2207 2208static int 2209aac_rx_get_mailbox(struct aac_softc *sc, int mb) 2210{ 2211 debug_called(4); 2212 2213 return(AAC_GETREG4(sc, AAC_RX_MAILBOX + (mb * 4))); 2214} 2215 2216static int 2217aac_fa_get_mailbox(struct aac_softc *sc, int mb) 2218{ 2219 int val; 2220 2221 debug_called(4); 2222 2223 val = AAC_GETREG4(sc, AAC_FA_MAILBOX + (mb * 4)); 2224 return (val); 2225} 2226 2227/* 2228 * Set/clear interrupt masks 2229 */ 2230static void 2231aac_sa_set_interrupts(struct aac_softc *sc, int enable) 2232{ 2233 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2234 2235 if (enable) { 2236 AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2237 } else { 2238 AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0); 2239 } 2240} 2241 2242static void 2243aac_rx_set_interrupts(struct aac_softc *sc, int enable) 2244{ 2245 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2246 2247 if (enable) { 2248 AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS); 2249 } else { 2250 AAC_SETREG4(sc, AAC_RX_OIMR, ~0); 2251 } 2252} 2253 2254static void 2255aac_fa_set_interrupts(struct aac_softc *sc, int enable) 2256{ 2257 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2258 2259 if (enable) { 2260 AAC_SETREG2((sc), AAC_FA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2261 AAC_FA_HACK(sc); 2262 } else { 2263 AAC_SETREG2((sc), AAC_FA_MASK0, ~0); 2264 AAC_FA_HACK(sc); 2265 } 2266} 2267 2268/* 2269 * Debugging and Diagnostics 2270 */ 2271 2272/* 2273 * Print some information about the controller. 2274 */ 2275static void 2276aac_describe_controller(struct aac_softc *sc) 2277{ 2278 struct aac_fib *fib; 2279 struct aac_adapter_info *info; 2280 2281 debug_called(2); 2282 2283 aac_alloc_sync_fib(sc, &fib, 0); 2284 2285 fib->data[0] = 0; 2286 if (aac_sync_fib(sc, RequestAdapterInfo, 0, fib, 1)) { 2287 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 2288 aac_release_sync_fib(sc); 2289 return; 2290 } 2291 info = (struct aac_adapter_info *)&fib->data[0]; 2292 2293 device_printf(sc->aac_dev, "%s %dMHz, %dMB cache memory, %s\n", 2294 aac_describe_code(aac_cpu_variant, info->CpuVariant), 2295 info->ClockSpeed, info->BufferMem / (1024 * 1024), 2296 aac_describe_code(aac_battery_platform, 2297 info->batteryPlatform)); 2298 2299 /* save the kernel revision structure for later use */ 2300 sc->aac_revision = info->KernelRevision; 2301 device_printf(sc->aac_dev, "Kernel %d.%d-%d, Build %d, S/N %6X\n", 2302 info->KernelRevision.external.comp.major, 2303 info->KernelRevision.external.comp.minor, 2304 info->KernelRevision.external.comp.dash, 2305 info->KernelRevision.buildNumber, 2306 (u_int32_t)(info->SerialNumber & 0xffffff)); 2307 2308 aac_release_sync_fib(sc); 2309 2310 if (1 || bootverbose) { 2311 device_printf(sc->aac_dev, "Supported Options=%b\n", 2312 sc->supported_options, 2313 "\20" 2314 "\1SNAPSHOT" 2315 "\2CLUSTERS" 2316 "\3WCACHE" 2317 "\4DATA64" 2318 "\5HOSTTIME" 2319 "\6RAID50" 2320 "\7WINDOW4GB" 2321 "\10SCSIUPGD" 2322 "\11SOFTERR" 2323 "\12NORECOND" 2324 "\13SGMAP64" 2325 "\14ALARM" 2326 "\15NONDASD"); 2327 } 2328} 2329 2330/* 2331 * Look up a text description of a numeric error code and return a pointer to 2332 * same. 2333 */ 2334static char * 2335aac_describe_code(struct aac_code_lookup *table, u_int32_t code) 2336{ 2337 int i; 2338 2339 for (i = 0; table[i].string != NULL; i++) 2340 if (table[i].code == code) 2341 return(table[i].string); 2342 return(table[i + 1].string); 2343} 2344 2345/* 2346 * Management Interface 2347 */ 2348 2349static int 2350aac_open(dev_t dev, int flags, int fmt, d_thread_t *td) 2351{ 2352 struct aac_softc *sc; 2353 2354 debug_called(2); 2355 2356 sc = dev->si_drv1; 2357 2358 /* Check to make sure the device isn't already open */ 2359 if (sc->aac_state & AAC_STATE_OPEN) { 2360 return EBUSY; 2361 } 2362 sc->aac_state |= AAC_STATE_OPEN; 2363 2364 return 0; 2365} 2366 2367static int 2368aac_close(dev_t dev, int flags, int fmt, d_thread_t *td) 2369{ 2370 struct aac_softc *sc; 2371 2372 debug_called(2); 2373 2374 sc = dev->si_drv1; 2375 2376 /* Mark this unit as no longer open */ 2377 sc->aac_state &= ~AAC_STATE_OPEN; 2378 2379 return 0; 2380} 2381 2382static int 2383aac_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, d_thread_t *td) 2384{ 2385 union aac_statrequest *as; 2386 struct aac_softc *sc; 2387 int error = 0; 2388 uint32_t cookie; 2389 2390 debug_called(2); 2391 2392 as = (union aac_statrequest *)arg; 2393 sc = dev->si_drv1; 2394 2395 switch (cmd) { 2396 case AACIO_STATS: 2397 switch (as->as_item) { 2398 case AACQ_FREE: 2399 case AACQ_BIO: 2400 case AACQ_READY: 2401 case AACQ_BUSY: 2402 case AACQ_COMPLETE: 2403 bcopy(&sc->aac_qstat[as->as_item], &as->as_qstat, 2404 sizeof(struct aac_qstat)); 2405 break; 2406 default: 2407 error = ENOENT; 2408 break; 2409 } 2410 break; 2411 2412 case FSACTL_SENDFIB: 2413 arg = *(caddr_t*)arg; 2414 case FSACTL_LNX_SENDFIB: 2415 debug(1, "FSACTL_SENDFIB"); 2416 error = aac_ioctl_sendfib(sc, arg); 2417 break; 2418 case FSACTL_AIF_THREAD: 2419 case FSACTL_LNX_AIF_THREAD: 2420 debug(1, "FSACTL_AIF_THREAD"); 2421 error = EINVAL; 2422 break; 2423 case FSACTL_OPEN_GET_ADAPTER_FIB: 2424 arg = *(caddr_t*)arg; 2425 case FSACTL_LNX_OPEN_GET_ADAPTER_FIB: 2426 debug(1, "FSACTL_OPEN_GET_ADAPTER_FIB"); 2427 /* 2428 * Pass the caller out an AdapterFibContext. 2429 * 2430 * Note that because we only support one opener, we 2431 * basically ignore this. Set the caller's context to a magic 2432 * number just in case. 2433 * 2434 * The Linux code hands the driver a pointer into kernel space, 2435 * and then trusts it when the caller hands it back. Aiee! 2436 * Here, we give it the proc pointer of the per-adapter aif 2437 * thread. It's only used as a sanity check in other calls. 2438 */ 2439 cookie = (uint32_t)(uintptr_t)sc->aifthread; 2440 error = copyout(&cookie, arg, sizeof(cookie)); 2441 break; 2442 case FSACTL_GET_NEXT_ADAPTER_FIB: 2443 arg = *(caddr_t*)arg; 2444 case FSACTL_LNX_GET_NEXT_ADAPTER_FIB: 2445 debug(1, "FSACTL_GET_NEXT_ADAPTER_FIB"); 2446 error = aac_getnext_aif(sc, arg); 2447 break; 2448 case FSACTL_CLOSE_GET_ADAPTER_FIB: 2449 case FSACTL_LNX_CLOSE_GET_ADAPTER_FIB: 2450 debug(1, "FSACTL_CLOSE_GET_ADAPTER_FIB"); 2451 /* don't do anything here */ 2452 break; 2453 case FSACTL_MINIPORT_REV_CHECK: 2454 arg = *(caddr_t*)arg; 2455 case FSACTL_LNX_MINIPORT_REV_CHECK: 2456 debug(1, "FSACTL_MINIPORT_REV_CHECK"); 2457 error = aac_rev_check(sc, arg); 2458 break; 2459 case FSACTL_QUERY_DISK: 2460 arg = *(caddr_t*)arg; 2461 case FSACTL_LNX_QUERY_DISK: 2462 debug(1, "FSACTL_QUERY_DISK"); 2463 error = aac_query_disk(sc, arg); 2464 break; 2465 case FSACTL_DELETE_DISK: 2466 case FSACTL_LNX_DELETE_DISK: 2467 /* 2468 * We don't trust the underland to tell us when to delete a 2469 * container, rather we rely on an AIF coming from the 2470 * controller 2471 */ 2472 error = 0; 2473 break; 2474 default: 2475 debug(1, "unsupported cmd 0x%lx\n", cmd); 2476 error = EINVAL; 2477 break; 2478 } 2479 return(error); 2480} 2481 2482static int 2483aac_poll(dev_t dev, int poll_events, d_thread_t *td) 2484{ 2485 struct aac_softc *sc; 2486 int revents; 2487 2488 sc = dev->si_drv1; 2489 revents = 0; 2490 2491 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2492 if ((poll_events & (POLLRDNORM | POLLIN)) != 0) { 2493 if (sc->aac_aifq_tail != sc->aac_aifq_head) 2494 revents |= poll_events & (POLLIN | POLLRDNORM); 2495 } 2496 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2497 2498 if (revents == 0) { 2499 if (poll_events & (POLLIN | POLLRDNORM)) 2500 selrecord(td, &sc->rcv_select); 2501 } 2502 2503 return (revents); 2504} 2505 2506/* 2507 * Send a FIB supplied from userspace 2508 */ 2509static int 2510aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib) 2511{ 2512 struct aac_command *cm; 2513 int size, error; 2514 2515 debug_called(2); 2516 2517 cm = NULL; 2518 2519 /* 2520 * Get a command 2521 */ 2522 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 2523 if (aac_alloc_command(sc, &cm)) { 2524 error = EBUSY; 2525 goto out; 2526 } 2527 2528 /* 2529 * Fetch the FIB header, then re-copy to get data as well. 2530 */ 2531 if ((error = copyin(ufib, cm->cm_fib, 2532 sizeof(struct aac_fib_header))) != 0) 2533 goto out; 2534 size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header); 2535 if (size > sizeof(struct aac_fib)) { 2536 device_printf(sc->aac_dev, "incoming FIB oversized (%d > %zd)\n", 2537 size, sizeof(struct aac_fib)); 2538 size = sizeof(struct aac_fib); 2539 } 2540 if ((error = copyin(ufib, cm->cm_fib, size)) != 0) 2541 goto out; 2542 cm->cm_fib->Header.Size = size; 2543 cm->cm_timestamp = time_second; 2544 2545 /* 2546 * Pass the FIB to the controller, wait for it to complete. 2547 */ 2548 if ((error = aac_wait_command(cm, 30)) != 0) { /* XXX user timeout? */ 2549 device_printf(sc->aac_dev, 2550 "aac_wait_command return %d\n", error); 2551 goto out; 2552 } 2553 2554 /* 2555 * Copy the FIB and data back out to the caller. 2556 */ 2557 size = cm->cm_fib->Header.Size; 2558 if (size > sizeof(struct aac_fib)) { 2559 device_printf(sc->aac_dev, "outbound FIB oversized (%d > %zd)\n", 2560 size, sizeof(struct aac_fib)); 2561 size = sizeof(struct aac_fib); 2562 } 2563 error = copyout(cm->cm_fib, ufib, size); 2564 2565out: 2566 if (cm != NULL) { 2567 aac_release_command(cm); 2568 } 2569 2570 AAC_LOCK_RELEASE(&sc->aac_io_lock); 2571 return(error); 2572} 2573 2574/* 2575 * Handle an AIF sent to us by the controller; queue it for later reference. 2576 * If the queue fills up, then drop the older entries. 2577 */ 2578static void 2579aac_handle_aif(struct aac_softc *sc, struct aac_fib *fib) 2580{ 2581 struct aac_aif_command *aif; 2582 struct aac_container *co, *co_next; 2583 struct aac_mntinfo *mi; 2584 struct aac_mntinforesp *mir = NULL; 2585 u_int16_t rsize; 2586 int next, found; 2587 int count = 0, added = 0, i = 0; 2588 2589 debug_called(2); 2590 2591 aif = (struct aac_aif_command*)&fib->data[0]; 2592 aac_print_aif(sc, aif); 2593 2594 /* Is it an event that we should care about? */ 2595 switch (aif->command) { 2596 case AifCmdEventNotify: 2597 switch (aif->data.EN.type) { 2598 case AifEnAddContainer: 2599 case AifEnDeleteContainer: 2600 /* 2601 * A container was added or deleted, but the message 2602 * doesn't tell us anything else! Re-enumerate the 2603 * containers and sort things out. 2604 */ 2605 aac_alloc_sync_fib(sc, &fib, 0); 2606 mi = (struct aac_mntinfo *)&fib->data[0]; 2607 do { 2608 /* 2609 * Ask the controller for its containers one at 2610 * a time. 2611 * XXX What if the controller's list changes 2612 * midway through this enumaration? 2613 * XXX This should be done async. 2614 */ 2615 bzero(mi, sizeof(struct aac_mntinfo)); 2616 mi->Command = VM_NameServe; 2617 mi->MntType = FT_FILESYS; 2618 mi->MntCount = i; 2619 rsize = sizeof(mir); 2620 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 2621 sizeof(struct aac_mntinfo))) { 2622 printf("Error probing container %d\n", 2623 i); 2624 continue; 2625 } 2626 mir = (struct aac_mntinforesp *)&fib->data[0]; 2627 /* XXX Need to check if count changed */ 2628 count = mir->MntRespCount; 2629 /* 2630 * Check the container against our list. 2631 * co->co_found was already set to 0 in a 2632 * previous run. 2633 */ 2634 if ((mir->Status == ST_OK) && 2635 (mir->MntTable[0].VolType != CT_NONE)) { 2636 found = 0; 2637 TAILQ_FOREACH(co, 2638 &sc->aac_container_tqh, 2639 co_link) { 2640 if (co->co_mntobj.ObjectId == 2641 mir->MntTable[0].ObjectId) { 2642 co->co_found = 1; 2643 found = 1; 2644 break; 2645 } 2646 } 2647 /* 2648 * If the container matched, continue 2649 * in the list. 2650 */ 2651 if (found) { 2652 i++; 2653 continue; 2654 } 2655 2656 /* 2657 * This is a new container. Do all the 2658 * appropriate things to set it up. 2659 */ 2660 aac_add_container(sc, mir, 1); 2661 added = 1; 2662 } 2663 i++; 2664 } while ((i < count) && (i < AAC_MAX_CONTAINERS)); 2665 aac_release_sync_fib(sc); 2666 2667 /* 2668 * Go through our list of containers and see which ones 2669 * were not marked 'found'. Since the controller didn't 2670 * list them they must have been deleted. Do the 2671 * appropriate steps to destroy the device. Also reset 2672 * the co->co_found field. 2673 */ 2674 co = TAILQ_FIRST(&sc->aac_container_tqh); 2675 while (co != NULL) { 2676 if (co->co_found == 0) { 2677 device_delete_child(sc->aac_dev, 2678 co->co_disk); 2679 co_next = TAILQ_NEXT(co, co_link); 2680 AAC_LOCK_ACQUIRE(&sc-> 2681 aac_container_lock); 2682 TAILQ_REMOVE(&sc->aac_container_tqh, co, 2683 co_link); 2684 AAC_LOCK_RELEASE(&sc-> 2685 aac_container_lock); 2686 FREE(co, M_AACBUF); 2687 co = co_next; 2688 } else { 2689 co->co_found = 0; 2690 co = TAILQ_NEXT(co, co_link); 2691 } 2692 } 2693 2694 /* Attach the newly created containers */ 2695 if (added) 2696 bus_generic_attach(sc->aac_dev); 2697 2698 break; 2699 2700 default: 2701 break; 2702 } 2703 2704 default: 2705 break; 2706 } 2707 2708 /* Copy the AIF data to the AIF queue for ioctl retrieval */ 2709 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2710 next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH; 2711 if (next != sc->aac_aifq_tail) { 2712 bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command)); 2713 sc->aac_aifq_head = next; 2714 2715 /* On the off chance that someone is sleeping for an aif... */ 2716 if (sc->aac_state & AAC_STATE_AIF_SLEEPER) 2717 wakeup(sc->aac_aifq); 2718 /* Wakeup any poll()ers */ 2719 selwakeuppri(&sc->rcv_select, PRIBIO); 2720 } 2721 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2722 2723 return; 2724} 2725 2726/* 2727 * Return the Revision of the driver to userspace and check to see if the 2728 * userspace app is possibly compatible. This is extremely bogus since 2729 * our driver doesn't follow Adaptec's versioning system. Cheat by just 2730 * returning what the card reported. 2731 */ 2732static int 2733aac_rev_check(struct aac_softc *sc, caddr_t udata) 2734{ 2735 struct aac_rev_check rev_check; 2736 struct aac_rev_check_resp rev_check_resp; 2737 int error = 0; 2738 2739 debug_called(2); 2740 2741 /* 2742 * Copyin the revision struct from userspace 2743 */ 2744 if ((error = copyin(udata, (caddr_t)&rev_check, 2745 sizeof(struct aac_rev_check))) != 0) { 2746 return error; 2747 } 2748 2749 debug(2, "Userland revision= %d\n", 2750 rev_check.callingRevision.buildNumber); 2751 2752 /* 2753 * Doctor up the response struct. 2754 */ 2755 rev_check_resp.possiblyCompatible = 1; 2756 rev_check_resp.adapterSWRevision.external.ul = 2757 sc->aac_revision.external.ul; 2758 rev_check_resp.adapterSWRevision.buildNumber = 2759 sc->aac_revision.buildNumber; 2760 2761 return(copyout((caddr_t)&rev_check_resp, udata, 2762 sizeof(struct aac_rev_check_resp))); 2763} 2764 2765/* 2766 * Pass the caller the next AIF in their queue 2767 */ 2768static int 2769aac_getnext_aif(struct aac_softc *sc, caddr_t arg) 2770{ 2771 struct get_adapter_fib_ioctl agf; 2772 int error; 2773 2774 debug_called(2); 2775 2776 if ((error = copyin(arg, &agf, sizeof(agf))) == 0) { 2777 2778 /* 2779 * Check the magic number that we gave the caller. 2780 */ 2781 if (agf.AdapterFibContext != (int)(uintptr_t)sc->aifthread) { 2782 error = EFAULT; 2783 } else { 2784 error = aac_return_aif(sc, agf.AifFib); 2785 if ((error == EAGAIN) && (agf.Wait)) { 2786 sc->aac_state |= AAC_STATE_AIF_SLEEPER; 2787 while (error == EAGAIN) { 2788 error = tsleep(sc->aac_aifq, PRIBIO | 2789 PCATCH, "aacaif", 0); 2790 if (error == 0) 2791 error = aac_return_aif(sc, 2792 agf.AifFib); 2793 } 2794 sc->aac_state &= ~AAC_STATE_AIF_SLEEPER; 2795 } 2796 } 2797 } 2798 return(error); 2799} 2800 2801/* 2802 * Hand the next AIF off the top of the queue out to userspace. 2803 */ 2804static int 2805aac_return_aif(struct aac_softc *sc, caddr_t uptr) 2806{ 2807 int next, error; 2808 2809 debug_called(2); 2810 2811 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2812 if (sc->aac_aifq_tail == sc->aac_aifq_head) { 2813 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2814 return (EAGAIN); 2815 } 2816 2817 next = (sc->aac_aifq_tail + 1) % AAC_AIFQ_LENGTH; 2818 error = copyout(&sc->aac_aifq[next], uptr, 2819 sizeof(struct aac_aif_command)); 2820 if (error) 2821 device_printf(sc->aac_dev, 2822 "aac_return_aif: copyout returned %d\n", error); 2823 else 2824 sc->aac_aifq_tail = next; 2825 2826 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2827 return(error); 2828} 2829 2830/* 2831 * Give the userland some information about the container. The AAC arch 2832 * expects the driver to be a SCSI passthrough type driver, so it expects 2833 * the containers to have b:t:l numbers. Fake it. 2834 */ 2835static int 2836aac_query_disk(struct aac_softc *sc, caddr_t uptr) 2837{ 2838 struct aac_query_disk query_disk; 2839 struct aac_container *co; 2840 struct aac_disk *disk; 2841 int error, id; 2842 2843 debug_called(2); 2844 2845 disk = NULL; 2846 2847 error = copyin(uptr, (caddr_t)&query_disk, 2848 sizeof(struct aac_query_disk)); 2849 if (error) 2850 return (error); 2851 2852 id = query_disk.ContainerNumber; 2853 if (id == -1) 2854 return (EINVAL); 2855 2856 AAC_LOCK_ACQUIRE(&sc->aac_container_lock); 2857 TAILQ_FOREACH(co, &sc->aac_container_tqh, co_link) { 2858 if (co->co_mntobj.ObjectId == id) 2859 break; 2860 } 2861 2862 if (co == NULL) { 2863 query_disk.Valid = 0; 2864 query_disk.Locked = 0; 2865 query_disk.Deleted = 1; /* XXX is this right? */ 2866 } else { 2867 disk = device_get_softc(co->co_disk); 2868 query_disk.Valid = 1; 2869 query_disk.Locked = 2870 (disk->ad_flags & AAC_DISK_OPEN) ? 1 : 0; 2871 query_disk.Deleted = 0; 2872 query_disk.Bus = device_get_unit(sc->aac_dev); 2873 query_disk.Target = disk->unit; 2874 query_disk.Lun = 0; 2875 query_disk.UnMapped = 0; 2876 sprintf(&query_disk.diskDeviceName[0], "%s%d", 2877 disk->ad_disk.d_name, disk->ad_disk.d_unit); 2878 } 2879 AAC_LOCK_RELEASE(&sc->aac_container_lock); 2880 2881 error = copyout((caddr_t)&query_disk, uptr, 2882 sizeof(struct aac_query_disk)); 2883 2884 return (error); 2885} 2886 2887static void 2888aac_get_bus_info(struct aac_softc *sc) 2889{ 2890 struct aac_fib *fib; 2891 struct aac_ctcfg *c_cmd; 2892 struct aac_ctcfg_resp *c_resp; 2893 struct aac_vmioctl *vmi; 2894 struct aac_vmi_businf_resp *vmi_resp; 2895 struct aac_getbusinf businfo; 2896 struct aac_sim *caminf; 2897 device_t child; 2898 int i, found, error; 2899 2900 aac_alloc_sync_fib(sc, &fib, 0); 2901 c_cmd = (struct aac_ctcfg *)&fib->data[0]; 2902 bzero(c_cmd, sizeof(struct aac_ctcfg)); 2903 2904 c_cmd->Command = VM_ContainerConfig; 2905 c_cmd->cmd = CT_GET_SCSI_METHOD; 2906 c_cmd->param = 0; 2907 2908 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2909 sizeof(struct aac_ctcfg)); 2910 if (error) { 2911 device_printf(sc->aac_dev, "Error %d sending " 2912 "VM_ContainerConfig command\n", error); 2913 aac_release_sync_fib(sc); 2914 return; 2915 } 2916 2917 c_resp = (struct aac_ctcfg_resp *)&fib->data[0]; 2918 if (c_resp->Status != ST_OK) { 2919 device_printf(sc->aac_dev, "VM_ContainerConfig returned 0x%x\n", 2920 c_resp->Status); 2921 aac_release_sync_fib(sc); 2922 return; 2923 } 2924 2925 sc->scsi_method_id = c_resp->param; 2926 2927 vmi = (struct aac_vmioctl *)&fib->data[0]; 2928 bzero(vmi, sizeof(struct aac_vmioctl)); 2929 2930 vmi->Command = VM_Ioctl; 2931 vmi->ObjType = FT_DRIVE; 2932 vmi->MethId = sc->scsi_method_id; 2933 vmi->ObjId = 0; 2934 vmi->IoctlCmd = GetBusInfo; 2935 2936 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2937 sizeof(struct aac_vmioctl)); 2938 if (error) { 2939 device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n", 2940 error); 2941 aac_release_sync_fib(sc); 2942 return; 2943 } 2944 2945 vmi_resp = (struct aac_vmi_businf_resp *)&fib->data[0]; 2946 if (vmi_resp->Status != ST_OK) { 2947 device_printf(sc->aac_dev, "VM_Ioctl returned %d\n", 2948 vmi_resp->Status); 2949 aac_release_sync_fib(sc); 2950 return; 2951 } 2952 2953 bcopy(&vmi_resp->BusInf, &businfo, sizeof(struct aac_getbusinf)); 2954 aac_release_sync_fib(sc); 2955 2956 found = 0; 2957 for (i = 0; i < businfo.BusCount; i++) { 2958 if (businfo.BusValid[i] != AAC_BUS_VALID) 2959 continue; 2960 2961 caminf = (struct aac_sim *)malloc( sizeof(struct aac_sim), 2962 M_AACBUF, M_NOWAIT | M_ZERO); 2963 if (caminf == NULL) 2964 continue; 2965 2966 child = device_add_child(sc->aac_dev, "aacp", -1); 2967 if (child == NULL) { 2968 device_printf(sc->aac_dev, "device_add_child failed\n"); 2969 continue; 2970 } 2971 2972 caminf->TargetsPerBus = businfo.TargetsPerBus; 2973 caminf->BusNumber = i; 2974 caminf->InitiatorBusId = businfo.InitiatorBusId[i]; 2975 caminf->aac_sc = sc; 2976 caminf->sim_dev = child; 2977 2978 device_set_ivars(child, caminf); 2979 device_set_desc(child, "SCSI Passthrough Bus"); 2980 TAILQ_INSERT_TAIL(&sc->aac_sim_tqh, caminf, sim_link); 2981 2982 found = 1; 2983 } 2984 2985 if (found) 2986 bus_generic_attach(sc->aac_dev); 2987 2988 return; 2989} 2990