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("$FreeBSD$"); 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 64 static void aac_startup(void *arg); 65 static void aac_add_container(struct aac_softc *sc, 66 struct aac_mntinforesp *mir, int f); 67 static void aac_get_bus_info(struct aac_softc *sc); 68 69 /* Command Processing */ 70 static void aac_timeout(struct aac_softc *sc); 71 static int aac_map_command(struct aac_command *cm); 72 static void aac_complete(void *context, int pending); 73 static int aac_bio_command(struct aac_softc *sc, struct aac_command **cmp); 74 static void aac_bio_complete(struct aac_command *cm); 75 static int aac_wait_command(struct aac_command *cm, int timeout); 76 static void aac_command_thread(struct aac_softc *sc); 77 78 /* Command Buffer Management */ 79 static void aac_map_command_sg(void *arg, bus_dma_segment_t *segs, 80 int nseg, int error); 81 static void aac_map_command_helper(void *arg, bus_dma_segment_t *segs, 82 int nseg, int error); 83 static int aac_alloc_commands(struct aac_softc *sc); 84 static void aac_free_commands(struct aac_softc *sc); 85 static void aac_unmap_command(struct aac_command *cm); 86 87 /* Hardware Interface */ 88 static void aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, 89 int error); 90 static int aac_check_firmware(struct aac_softc *sc); 91 static int aac_init(struct aac_softc *sc); 92 static 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); 95 static int aac_enqueue_fib(struct aac_softc *sc, int queue, 96 struct aac_command *cm); 97 static int aac_dequeue_fib(struct aac_softc *sc, int queue, 98 u_int32_t *fib_size, struct aac_fib **fib_addr); 99 static int aac_enqueue_response(struct aac_softc *sc, int queue, 100 struct aac_fib *fib); 101 102 /* Falcon/PPC interface */ 103 static int aac_fa_get_fwstatus(struct aac_softc *sc); 104 static void aac_fa_qnotify(struct aac_softc *sc, int qbit); 105 static int aac_fa_get_istatus(struct aac_softc *sc); 106 static void aac_fa_clear_istatus(struct aac_softc *sc, int mask); 107 static 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); 110 static int aac_fa_get_mailbox(struct aac_softc *sc, int mb); 111 static void aac_fa_set_interrupts(struct aac_softc *sc, int enable); 112 113 struct 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 */ 124 static int aac_sa_get_fwstatus(struct aac_softc *sc); 125 static void aac_sa_qnotify(struct aac_softc *sc, int qbit); 126 static int aac_sa_get_istatus(struct aac_softc *sc); 127 static void aac_sa_clear_istatus(struct aac_softc *sc, int mask); 128 static 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); 131 static int aac_sa_get_mailbox(struct aac_softc *sc, int mb); 132 static void aac_sa_set_interrupts(struct aac_softc *sc, int enable); 133 134 struct 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 */ 145 static int aac_rx_get_fwstatus(struct aac_softc *sc); 146 static void aac_rx_qnotify(struct aac_softc *sc, int qbit); 147 static int aac_rx_get_istatus(struct aac_softc *sc); 148 static void aac_rx_clear_istatus(struct aac_softc *sc, int mask); 149 static 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); 152 static int aac_rx_get_mailbox(struct aac_softc *sc, int mb); 153 static void aac_rx_set_interrupts(struct aac_softc *sc, int enable); 154 155 struct 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 */ 166 static void aac_describe_controller(struct aac_softc *sc); 167 static char *aac_describe_code(struct aac_code_lookup *table, 168 u_int32_t code); 169 170 /* Management Interface */ 171 static d_open_t aac_open; 172 static d_close_t aac_close; 173 static d_ioctl_t aac_ioctl; 174 static d_poll_t aac_poll; 175 static int aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib); 176 static void aac_handle_aif(struct aac_softc *sc, 177 struct aac_fib *fib); 178 static int aac_rev_check(struct aac_softc *sc, caddr_t udata); 179 static int aac_getnext_aif(struct aac_softc *sc, caddr_t arg); 180 static int aac_return_aif(struct aac_softc *sc, caddr_t uptr); 181 static int aac_query_disk(struct aac_softc *sc, caddr_t uptr); 182 183 static struct cdevsw aac_cdevsw = { 184 .d_version = D_VERSION, 185 .d_flags = D_NEEDGIANT, 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 }; 192 193 MALLOC_DEFINE(M_AACBUF, "aacbuf", "Buffers for the AAC driver"); 194 195 /* sysctl node */ 196 SYSCTL_NODE(_hw, OID_AUTO, aac, CTLFLAG_RD, 0, "AAC driver parameters"); 197 198 /* 199 * Device Interface 200 */ 201 202 /* 203 * Initialise the controller and softc 204 */ 205 int 206 aac_attach(struct aac_softc *sc) 207 { 208 int error, unit; 209 210 debug_called(1); 211 212 /* 213 * Initialise per-controller queues. 214 */ 215 aac_initq_free(sc); 216 aac_initq_ready(sc); 217 aac_initq_busy(sc); 218 aac_initq_bio(sc); 219 220 /* 221 * Initialise command-completion task. 222 */ 223 TASK_INIT(&sc->aac_task_complete, 0, aac_complete, sc); 224 225 /* disable interrupts before we enable anything */ 226 AAC_MASK_INTERRUPTS(sc); 227 228 /* mark controller as suspended until we get ourselves organised */ 229 sc->aac_state |= AAC_STATE_SUSPEND; 230 231 /* 232 * Check that the firmware on the card is supported. 233 */ 234 if ((error = aac_check_firmware(sc)) != 0) 235 return(error); 236 237 /* 238 * Initialize locks 239 */ 240 AAC_LOCK_INIT(&sc->aac_sync_lock, "AAC sync FIB lock"); 241 AAC_LOCK_INIT(&sc->aac_aifq_lock, "AAC AIF lock"); 242 AAC_LOCK_INIT(&sc->aac_io_lock, "AAC I/O lock"); 243 AAC_LOCK_INIT(&sc->aac_container_lock, "AAC container lock"); 244 TAILQ_INIT(&sc->aac_container_tqh); 245 246 /* Initialize the local AIF queue pointers */ 247 sc->aac_aifq_head = sc->aac_aifq_tail = AAC_AIFQ_LENGTH; 248 249 /* 250 * Initialise the adapter. 251 */ 252 if ((error = aac_init(sc)) != 0) 253 return(error); 254 255 /* 256 * Print a little information about the controller. 257 */ 258 aac_describe_controller(sc); 259 260 /* 261 * Register to probe our containers later. 262 */ 263 sc->aac_ich.ich_func = aac_startup; 264 sc->aac_ich.ich_arg = sc; 265 if (config_intrhook_establish(&sc->aac_ich) != 0) { 266 device_printf(sc->aac_dev, 267 "can't establish configuration hook\n"); 268 return(ENXIO); 269 } 270 271 /* 272 * Make the control device. 273 */ 274 unit = device_get_unit(sc->aac_dev); 275 sc->aac_dev_t = make_dev(&aac_cdevsw, unit, UID_ROOT, GID_OPERATOR, 276 0640, "aac%d", unit); 277 (void)make_dev_alias(sc->aac_dev_t, "afa%d", unit); 278 (void)make_dev_alias(sc->aac_dev_t, "hpn%d", unit); 279 sc->aac_dev_t->si_drv1 = sc; 280 281 /* Create the AIF thread */ 282 if (kthread_create((void(*)(void *))aac_command_thread, sc, 283 &sc->aifthread, 0, 0, "aac%daif", unit)) 284 panic("Could not create AIF thread\n"); 285 286 /* Register the shutdown method to only be called post-dump */ 287 if ((sc->eh = EVENTHANDLER_REGISTER(shutdown_final, aac_shutdown, 288 sc->aac_dev, SHUTDOWN_PRI_DEFAULT)) == NULL) 289 device_printf(sc->aac_dev, 290 "shutdown event registration failed\n"); 291 292 /* Register with CAM for the non-DASD devices */ 293 if ((sc->flags & AAC_FLAGS_ENABLE_CAM) != 0) { 294 TAILQ_INIT(&sc->aac_sim_tqh); 295 aac_get_bus_info(sc); 296 } 297 298 return(0); 299 } 300 301 /* 302 * Probe for containers, create disks. 303 */ 304 static void 305 aac_startup(void *arg) 306 { 307 struct aac_softc *sc; 308 struct aac_fib *fib; 309 struct aac_mntinfo *mi; 310 struct aac_mntinforesp *mir = NULL; 311 int count = 0, i = 0; 312 313 debug_called(1); 314 315 sc = (struct aac_softc *)arg; 316 317 /* disconnect ourselves from the intrhook chain */ 318 config_intrhook_disestablish(&sc->aac_ich); 319 320 aac_alloc_sync_fib(sc, &fib, 0); 321 mi = (struct aac_mntinfo *)&fib->data[0]; 322 323 /* loop over possible containers */ 324 do { 325 /* request information on this container */ 326 bzero(mi, sizeof(struct aac_mntinfo)); 327 mi->Command = VM_NameServe; 328 mi->MntType = FT_FILESYS; 329 mi->MntCount = i; 330 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 331 sizeof(struct aac_mntinfo))) { 332 printf("error probing container %d", i); 333 continue; 334 } 335 336 mir = (struct aac_mntinforesp *)&fib->data[0]; 337 /* XXX Need to check if count changed */ 338 count = mir->MntRespCount; 339 aac_add_container(sc, mir, 0); 340 i++; 341 } while ((i < count) && (i < AAC_MAX_CONTAINERS)); 342 343 aac_release_sync_fib(sc); 344 345 /* poke the bus to actually attach the child devices */ 346 if (bus_generic_attach(sc->aac_dev)) 347 device_printf(sc->aac_dev, "bus_generic_attach failed\n"); 348 349 /* mark the controller up */ 350 sc->aac_state &= ~AAC_STATE_SUSPEND; 351 352 /* enable interrupts now */ 353 AAC_UNMASK_INTERRUPTS(sc); 354 } 355 356 /* 357 * Create a device to respresent a new container 358 */ 359 static void 360 aac_add_container(struct aac_softc *sc, struct aac_mntinforesp *mir, int f) 361 { 362 struct aac_container *co; 363 device_t child; 364 365 /* 366 * Check container volume type for validity. Note that many of 367 * the possible types may never show up. 368 */ 369 if ((mir->Status == ST_OK) && (mir->MntTable[0].VolType != CT_NONE)) { 370 co = (struct aac_container *)malloc(sizeof *co, M_AACBUF, 371 M_NOWAIT | M_ZERO); 372 if (co == NULL) 373 panic("Out of memory?!\n"); 374 debug(1, "id %x name '%.16s' size %u type %d", 375 mir->MntTable[0].ObjectId, 376 mir->MntTable[0].FileSystemName, 377 mir->MntTable[0].Capacity, mir->MntTable[0].VolType); 378 379 if ((child = device_add_child(sc->aac_dev, "aacd", -1)) == NULL) 380 device_printf(sc->aac_dev, "device_add_child failed\n"); 381 else 382 device_set_ivars(child, co); 383 device_set_desc(child, aac_describe_code(aac_container_types, 384 mir->MntTable[0].VolType)); 385 co->co_disk = child; 386 co->co_found = f; 387 bcopy(&mir->MntTable[0], &co->co_mntobj, 388 sizeof(struct aac_mntobj)); 389 AAC_LOCK_ACQUIRE(&sc->aac_container_lock); 390 TAILQ_INSERT_TAIL(&sc->aac_container_tqh, co, co_link); 391 AAC_LOCK_RELEASE(&sc->aac_container_lock); 392 } 393 } 394 395 /* 396 * Free all of the resources associated with (sc) 397 * 398 * Should not be called if the controller is active. 399 */ 400 void 401 aac_free(struct aac_softc *sc) 402 { 403 404 debug_called(1); 405 406 /* remove the control device */ 407 if (sc->aac_dev_t != NULL) 408 destroy_dev(sc->aac_dev_t); 409 410 /* throw away any FIB buffers, discard the FIB DMA tag */ 411 aac_free_commands(sc); 412 if (sc->aac_fib_dmat) 413 bus_dma_tag_destroy(sc->aac_fib_dmat); 414 415 free(sc->aac_commands, M_AACBUF); 416 417 /* destroy the common area */ 418 if (sc->aac_common) { 419 bus_dmamap_unload(sc->aac_common_dmat, sc->aac_common_dmamap); 420 bus_dmamem_free(sc->aac_common_dmat, sc->aac_common, 421 sc->aac_common_dmamap); 422 } 423 if (sc->aac_common_dmat) 424 bus_dma_tag_destroy(sc->aac_common_dmat); 425 426 /* disconnect the interrupt handler */ 427 if (sc->aac_intr) 428 bus_teardown_intr(sc->aac_dev, sc->aac_irq, sc->aac_intr); 429 if (sc->aac_irq != NULL) 430 bus_release_resource(sc->aac_dev, SYS_RES_IRQ, sc->aac_irq_rid, 431 sc->aac_irq); 432 433 /* destroy data-transfer DMA tag */ 434 if (sc->aac_buffer_dmat) 435 bus_dma_tag_destroy(sc->aac_buffer_dmat); 436 437 /* destroy the parent DMA tag */ 438 if (sc->aac_parent_dmat) 439 bus_dma_tag_destroy(sc->aac_parent_dmat); 440 441 /* release the register window mapping */ 442 if (sc->aac_regs_resource != NULL) 443 bus_release_resource(sc->aac_dev, SYS_RES_MEMORY, 444 sc->aac_regs_rid, sc->aac_regs_resource); 445 } 446 447 /* 448 * Disconnect from the controller completely, in preparation for unload. 449 */ 450 int 451 aac_detach(device_t dev) 452 { 453 struct aac_softc *sc; 454 struct aac_container *co; 455 struct aac_sim *sim; 456 int error; 457 458 debug_called(1); 459 460 sc = device_get_softc(dev); 461 462 if (sc->aac_state & AAC_STATE_OPEN) 463 return(EBUSY); 464 465 /* Remove the child containers */ 466 while ((co = TAILQ_FIRST(&sc->aac_container_tqh)) != NULL) { 467 error = device_delete_child(dev, co->co_disk); 468 if (error) 469 return (error); 470 TAILQ_REMOVE(&sc->aac_container_tqh, co, co_link); 471 free(co, M_AACBUF); 472 } 473 474 /* Remove the CAM SIMs */ 475 while ((sim = TAILQ_FIRST(&sc->aac_sim_tqh)) != NULL) { 476 TAILQ_REMOVE(&sc->aac_sim_tqh, sim, sim_link); 477 error = device_delete_child(dev, sim->sim_dev); 478 if (error) 479 return (error); 480 free(sim, M_AACBUF); 481 } 482 483 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) { 484 sc->aifflags |= AAC_AIFFLAGS_EXIT; 485 wakeup(sc->aifthread); 486 tsleep(sc->aac_dev, PUSER | PCATCH, "aacdch", 30 * hz); 487 } 488 489 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) 490 panic("Cannot shutdown AIF thread\n"); 491 492 if ((error = aac_shutdown(dev))) 493 return(error); 494 495 EVENTHANDLER_DEREGISTER(shutdown_final, sc->eh); 496 497 aac_free(sc); 498 499 return(0); 500 } 501 502 /* 503 * Bring the controller down to a dormant state and detach all child devices. 504 * 505 * This function is called before detach or system shutdown. 506 * 507 * Note that we can assume that the bioq on the controller is empty, as we won't 508 * allow shutdown if any device is open. 509 */ 510 int 511 aac_shutdown(device_t dev) 512 { 513 struct aac_softc *sc; 514 struct aac_fib *fib; 515 struct aac_close_command *cc; 516 517 debug_called(1); 518 519 sc = device_get_softc(dev); 520 521 sc->aac_state |= AAC_STATE_SUSPEND; 522 523 /* 524 * Send a Container shutdown followed by a HostShutdown FIB to the 525 * controller to convince it that we don't want to talk to it anymore. 526 * We've been closed and all I/O completed already 527 */ 528 device_printf(sc->aac_dev, "shutting down controller..."); 529 530 aac_alloc_sync_fib(sc, &fib, AAC_SYNC_LOCK_FORCE); 531 cc = (struct aac_close_command *)&fib->data[0]; 532 533 bzero(cc, sizeof(struct aac_close_command)); 534 cc->Command = VM_CloseAll; 535 cc->ContainerId = 0xffffffff; 536 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 537 sizeof(struct aac_close_command))) 538 printf("FAILED.\n"); 539 else 540 printf("done\n"); 541 #if 0 542 else { 543 fib->data[0] = 0; 544 /* 545 * XXX Issuing this command to the controller makes it shut down 546 * but also keeps it from coming back up without a reset of the 547 * PCI bus. This is not desirable if you are just unloading the 548 * driver module with the intent to reload it later. 549 */ 550 if (aac_sync_fib(sc, FsaHostShutdown, AAC_FIBSTATE_SHUTDOWN, 551 fib, 1)) { 552 printf("FAILED.\n"); 553 } else { 554 printf("done.\n"); 555 } 556 } 557 #endif 558 559 AAC_MASK_INTERRUPTS(sc); 560 561 return(0); 562 } 563 564 /* 565 * Bring the controller to a quiescent state, ready for system suspend. 566 */ 567 int 568 aac_suspend(device_t dev) 569 { 570 struct aac_softc *sc; 571 572 debug_called(1); 573 574 sc = device_get_softc(dev); 575 576 sc->aac_state |= AAC_STATE_SUSPEND; 577 578 AAC_MASK_INTERRUPTS(sc); 579 return(0); 580 } 581 582 /* 583 * Bring the controller back to a state ready for operation. 584 */ 585 int 586 aac_resume(device_t dev) 587 { 588 struct aac_softc *sc; 589 590 debug_called(1); 591 592 sc = device_get_softc(dev); 593 594 sc->aac_state &= ~AAC_STATE_SUSPEND; 595 AAC_UNMASK_INTERRUPTS(sc); 596 return(0); 597 } 598 599 /* 600 * Take an interrupt. 601 */ 602 void 603 aac_intr(void *arg) 604 { 605 struct aac_softc *sc; 606 u_int16_t reason; 607 608 debug_called(2); 609 610 sc = (struct aac_softc *)arg; 611 612 /* 613 * Read the status register directly. This is faster than taking the 614 * driver lock and reading the queues directly. It also saves having 615 * to turn parts of the driver lock into a spin mutex, which would be 616 * ugly. 617 */ 618 reason = AAC_GET_ISTATUS(sc); 619 AAC_CLEAR_ISTATUS(sc, reason); 620 621 /* handle completion processing */ 622 if (reason & AAC_DB_RESPONSE_READY) 623 taskqueue_enqueue_fast(taskqueue_fast, &sc->aac_task_complete); 624 625 /* controller wants to talk to us */ 626 if (reason & (AAC_DB_PRINTF | AAC_DB_COMMAND_READY)) { 627 /* 628 * XXX Make sure that we don't get fooled by strange messages 629 * that start with a NULL. 630 */ 631 if ((reason & AAC_DB_PRINTF) && 632 (sc->aac_common->ac_printf[0] == 0)) 633 sc->aac_common->ac_printf[0] = 32; 634 635 /* 636 * This might miss doing the actual wakeup. However, the 637 * msleep that this is waking up has a timeout, so it will 638 * wake up eventually. AIFs and printfs are low enough 639 * priority that they can handle hanging out for a few seconds 640 * if needed. 641 */ 642 wakeup(sc->aifthread); 643 } 644 } 645 646 /* 647 * Command Processing 648 */ 649 650 /* 651 * Start as much queued I/O as possible on the controller 652 */ 653 void 654 aac_startio(struct aac_softc *sc) 655 { 656 struct aac_command *cm; 657 658 debug_called(2); 659 660 if (sc->flags & AAC_QUEUE_FRZN) 661 return; 662 663 for (;;) { 664 /* 665 * Try to get a command that's been put off for lack of 666 * resources 667 */ 668 cm = aac_dequeue_ready(sc); 669 670 /* 671 * Try to build a command off the bio queue (ignore error 672 * return) 673 */ 674 if (cm == NULL) 675 aac_bio_command(sc, &cm); 676 677 /* nothing to do? */ 678 if (cm == NULL) 679 break; 680 681 /* 682 * Try to give the command to the controller. Any error is 683 * catastrophic since it means that bus_dmamap_load() failed. 684 */ 685 if (aac_map_command(cm) != 0) 686 panic("aac: error mapping command %p\n", cm); 687 } 688 } 689 690 /* 691 * Deliver a command to the controller; allocate controller resources at the 692 * last moment when possible. 693 */ 694 static int 695 aac_map_command(struct aac_command *cm) 696 { 697 struct aac_softc *sc; 698 int error; 699 700 debug_called(2); 701 702 sc = cm->cm_sc; 703 error = 0; 704 705 /* don't map more than once */ 706 if (cm->cm_flags & AAC_CMD_MAPPED) 707 panic("aac: command %p already mapped", cm); 708 709 if (cm->cm_datalen != 0) { 710 error = bus_dmamap_load(sc->aac_buffer_dmat, cm->cm_datamap, 711 cm->cm_data, cm->cm_datalen, 712 aac_map_command_sg, cm, 0); 713 if (error == EINPROGRESS) { 714 debug(1, "freezing queue\n"); 715 sc->flags |= AAC_QUEUE_FRZN; 716 error = 0; 717 } 718 } else { 719 aac_map_command_sg(cm, NULL, 0, 0); 720 } 721 return (error); 722 } 723 724 /* 725 * Handle notification of one or more FIBs coming from the controller. 726 */ 727 static void 728 aac_command_thread(struct aac_softc *sc) 729 { 730 struct aac_fib *fib; 731 u_int32_t fib_size; 732 int size, retval; 733 734 debug_called(2); 735 736 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 737 sc->aifflags = AAC_AIFFLAGS_RUNNING; 738 739 while ((sc->aifflags & AAC_AIFFLAGS_EXIT) == 0) { 740 741 retval = 0; 742 if ((sc->aifflags & AAC_AIFFLAGS_PENDING) == 0) 743 retval = msleep(sc->aifthread, &sc->aac_io_lock, PRIBIO, 744 "aifthd", AAC_PERIODIC_INTERVAL * hz); 745 746 /* 747 * First see if any FIBs need to be allocated. This needs 748 * to be called without the driver lock because contigmalloc 749 * will grab Giant, and would result in an LOR. 750 */ 751 if ((sc->aifflags & AAC_AIFFLAGS_ALLOCFIBS) != 0) { 752 AAC_LOCK_RELEASE(&sc->aac_io_lock); 753 aac_alloc_commands(sc); 754 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 755 sc->aifflags &= ~AAC_AIFFLAGS_ALLOCFIBS; 756 aac_startio(sc); 757 } 758 759 /* 760 * While we're here, check to see if any commands are stuck. 761 * This is pretty low-priority, so it's ok if it doesn't 762 * always fire. 763 */ 764 if (retval == EWOULDBLOCK) 765 aac_timeout(sc); 766 767 /* Check the hardware printf message buffer */ 768 if (sc->aac_common->ac_printf[0] != 0) 769 aac_print_printf(sc); 770 771 /* Also check to see if the adapter has a command for us. */ 772 while (aac_dequeue_fib(sc, AAC_HOST_NORM_CMD_QUEUE, 773 &fib_size, &fib) == 0) { 774 775 AAC_PRINT_FIB(sc, fib); 776 777 switch (fib->Header.Command) { 778 case AifRequest: 779 aac_handle_aif(sc, fib); 780 break; 781 default: 782 device_printf(sc->aac_dev, "unknown command " 783 "from controller\n"); 784 break; 785 } 786 787 if ((fib->Header.XferState == 0) || 788 (fib->Header.StructType != AAC_FIBTYPE_TFIB)) 789 break; 790 791 /* Return the AIF to the controller. */ 792 if (fib->Header.XferState & AAC_FIBSTATE_FROMADAP) { 793 fib->Header.XferState |= AAC_FIBSTATE_DONEHOST; 794 *(AAC_FSAStatus*)fib->data = ST_OK; 795 796 /* XXX Compute the Size field? */ 797 size = fib->Header.Size; 798 if (size > sizeof(struct aac_fib)) { 799 size = sizeof(struct aac_fib); 800 fib->Header.Size = size; 801 } 802 /* 803 * Since we did not generate this command, it 804 * cannot go through the normal 805 * enqueue->startio chain. 806 */ 807 aac_enqueue_response(sc, 808 AAC_ADAP_NORM_RESP_QUEUE, 809 fib); 810 } 811 } 812 } 813 sc->aifflags &= ~AAC_AIFFLAGS_RUNNING; 814 AAC_LOCK_RELEASE(&sc->aac_io_lock); 815 wakeup(sc->aac_dev); 816 817 mtx_lock(&Giant); 818 kthread_exit(0); 819 } 820 821 /* 822 * Process completed commands. 823 */ 824 static void 825 aac_complete(void *context, int pending) 826 { 827 struct aac_softc *sc; 828 struct aac_command *cm; 829 struct aac_fib *fib; 830 u_int32_t fib_size; 831 832 debug_called(2); 833 834 sc = (struct aac_softc *)context; 835 836 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 837 838 /* pull completed commands off the queue */ 839 for (;;) { 840 /* look for completed FIBs on our queue */ 841 if (aac_dequeue_fib(sc, AAC_HOST_NORM_RESP_QUEUE, &fib_size, 842 &fib)) 843 break; /* nothing to do */ 844 845 /* get the command, unmap and hand off for processing */ 846 cm = sc->aac_commands + fib->Header.SenderData; 847 if (cm == NULL) { 848 AAC_PRINT_FIB(sc, fib); 849 break; 850 } 851 852 aac_remove_busy(cm); 853 aac_unmap_command(cm); 854 cm->cm_flags |= AAC_CMD_COMPLETED; 855 856 /* is there a completion handler? */ 857 if (cm->cm_complete != NULL) { 858 cm->cm_complete(cm); 859 } else { 860 /* assume that someone is sleeping on this command */ 861 wakeup(cm); 862 } 863 } 864 865 /* see if we can start some more I/O */ 866 sc->flags &= ~AAC_QUEUE_FRZN; 867 aac_startio(sc); 868 869 AAC_LOCK_RELEASE(&sc->aac_io_lock); 870 } 871 872 /* 873 * Handle a bio submitted from a disk device. 874 */ 875 void 876 aac_submit_bio(struct bio *bp) 877 { 878 struct aac_disk *ad; 879 struct aac_softc *sc; 880 881 debug_called(2); 882 883 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 884 sc = ad->ad_controller; 885 886 /* queue the BIO and try to get some work done */ 887 aac_enqueue_bio(sc, bp); 888 aac_startio(sc); 889 } 890 891 /* 892 * Get a bio and build a command to go with it. 893 */ 894 static int 895 aac_bio_command(struct aac_softc *sc, struct aac_command **cmp) 896 { 897 struct aac_command *cm; 898 struct aac_fib *fib; 899 struct aac_disk *ad; 900 struct bio *bp; 901 902 debug_called(2); 903 904 /* get the resources we will need */ 905 cm = NULL; 906 bp = NULL; 907 if (aac_alloc_command(sc, &cm)) /* get a command */ 908 goto fail; 909 if ((bp = aac_dequeue_bio(sc)) == NULL) 910 goto fail; 911 912 /* fill out the command */ 913 cm->cm_data = (void *)bp->bio_data; 914 cm->cm_datalen = bp->bio_bcount; 915 cm->cm_complete = aac_bio_complete; 916 cm->cm_private = bp; 917 cm->cm_timestamp = time_second; 918 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 919 920 /* build the FIB */ 921 fib = cm->cm_fib; 922 fib->Header.Size = sizeof(struct aac_fib_header); 923 fib->Header.XferState = 924 AAC_FIBSTATE_HOSTOWNED | 925 AAC_FIBSTATE_INITIALISED | 926 AAC_FIBSTATE_EMPTY | 927 AAC_FIBSTATE_FROMHOST | 928 AAC_FIBSTATE_REXPECTED | 929 AAC_FIBSTATE_NORM | 930 AAC_FIBSTATE_ASYNC | 931 AAC_FIBSTATE_FAST_RESPONSE; 932 933 /* build the read/write request */ 934 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 935 936 if ((sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 937 fib->Header.Command = ContainerCommand; 938 if (bp->bio_cmd == BIO_READ) { 939 struct aac_blockread *br; 940 br = (struct aac_blockread *)&fib->data[0]; 941 br->Command = VM_CtBlockRead; 942 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 943 br->BlockNumber = bp->bio_pblkno; 944 br->ByteCount = bp->bio_bcount; 945 fib->Header.Size += sizeof(struct aac_blockread); 946 cm->cm_sgtable = &br->SgMap; 947 cm->cm_flags |= AAC_CMD_DATAIN; 948 } else { 949 struct aac_blockwrite *bw; 950 bw = (struct aac_blockwrite *)&fib->data[0]; 951 bw->Command = VM_CtBlockWrite; 952 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 953 bw->BlockNumber = bp->bio_pblkno; 954 bw->ByteCount = bp->bio_bcount; 955 bw->Stable = CUNSTABLE; 956 fib->Header.Size += sizeof(struct aac_blockwrite); 957 cm->cm_flags |= AAC_CMD_DATAOUT; 958 cm->cm_sgtable = &bw->SgMap; 959 } 960 } else { 961 fib->Header.Command = ContainerCommand64; 962 if (bp->bio_cmd == BIO_READ) { 963 struct aac_blockread64 *br; 964 br = (struct aac_blockread64 *)&fib->data[0]; 965 br->Command = VM_CtHostRead64; 966 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 967 br->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 968 br->BlockNumber = bp->bio_pblkno; 969 br->Pad = 0; 970 br->Flags = 0; 971 fib->Header.Size += sizeof(struct aac_blockread64); 972 cm->cm_flags |= AAC_CMD_DATAOUT; 973 (struct aac_sg_table64 *)cm->cm_sgtable = &br->SgMap64; 974 } else { 975 struct aac_blockwrite64 *bw; 976 bw = (struct aac_blockwrite64 *)&fib->data[0]; 977 bw->Command = VM_CtHostWrite64; 978 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 979 bw->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 980 bw->BlockNumber = bp->bio_pblkno; 981 bw->Pad = 0; 982 bw->Flags = 0; 983 fib->Header.Size += sizeof(struct aac_blockwrite64); 984 cm->cm_flags |= AAC_CMD_DATAIN; 985 (struct aac_sg_table64 *)cm->cm_sgtable = &bw->SgMap64; 986 } 987 } 988 989 *cmp = cm; 990 return(0); 991 992 fail: 993 if (bp != NULL) 994 aac_enqueue_bio(sc, bp); 995 if (cm != NULL) 996 aac_release_command(cm); 997 return(ENOMEM); 998 } 999 1000 /* 1001 * Handle a bio-instigated command that has been completed. 1002 */ 1003 static void 1004 aac_bio_complete(struct aac_command *cm) 1005 { 1006 struct aac_blockread_response *brr; 1007 struct aac_blockwrite_response *bwr; 1008 struct bio *bp; 1009 AAC_FSAStatus status; 1010 1011 /* fetch relevant status and then release the command */ 1012 bp = (struct bio *)cm->cm_private; 1013 if (bp->bio_cmd == BIO_READ) { 1014 brr = (struct aac_blockread_response *)&cm->cm_fib->data[0]; 1015 status = brr->Status; 1016 } else { 1017 bwr = (struct aac_blockwrite_response *)&cm->cm_fib->data[0]; 1018 status = bwr->Status; 1019 } 1020 aac_release_command(cm); 1021 1022 /* fix up the bio based on status */ 1023 if (status == ST_OK) { 1024 bp->bio_resid = 0; 1025 } else { 1026 bp->bio_error = EIO; 1027 bp->bio_flags |= BIO_ERROR; 1028 /* pass an error string out to the disk layer */ 1029 bp->bio_driver1 = aac_describe_code(aac_command_status_table, 1030 status); 1031 } 1032 aac_biodone(bp); 1033 } 1034 1035 /* 1036 * Submit a command to the controller, return when it completes. 1037 * XXX This is very dangerous! If the card has gone out to lunch, we could 1038 * be stuck here forever. At the same time, signals are not caught 1039 * because there is a risk that a signal could wakeup the tsleep before 1040 * the card has a chance to complete the command. The passed in timeout 1041 * is ignored for the same reason. Since there is no way to cancel a 1042 * command in progress, we should probably create a 'dead' queue where 1043 * commands go that have been interrupted/timed-out/etc, that keeps them 1044 * out of the free pool. That way, if the card is just slow, it won't 1045 * spam the memory of a command that has been recycled. 1046 */ 1047 static int 1048 aac_wait_command(struct aac_command *cm, int timeout) 1049 { 1050 struct aac_softc *sc; 1051 int error = 0; 1052 1053 debug_called(2); 1054 1055 sc = cm->cm_sc; 1056 1057 /* Put the command on the ready queue and get things going */ 1058 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 1059 aac_enqueue_ready(cm); 1060 aac_startio(sc); 1061 while (!(cm->cm_flags & AAC_CMD_COMPLETED) && (error != EWOULDBLOCK)) { 1062 error = msleep(cm, &sc->aac_io_lock, PRIBIO, "aacwait", 0); 1063 } 1064 return(error); 1065 } 1066 1067 /* 1068 *Command Buffer Management 1069 */ 1070 1071 /* 1072 * Allocate a command. 1073 */ 1074 int 1075 aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp) 1076 { 1077 struct aac_command *cm; 1078 1079 debug_called(3); 1080 1081 if ((cm = aac_dequeue_free(sc)) == NULL) { 1082 if (sc->total_fibs < sc->aac_max_fibs) { 1083 sc->aifflags |= AAC_AIFFLAGS_ALLOCFIBS; 1084 wakeup(sc->aifthread); 1085 } 1086 return (EBUSY); 1087 } 1088 1089 *cmp = cm; 1090 return(0); 1091 } 1092 1093 /* 1094 * Release a command back to the freelist. 1095 */ 1096 void 1097 aac_release_command(struct aac_command *cm) 1098 { 1099 debug_called(3); 1100 1101 /* (re)initialise the command/FIB */ 1102 cm->cm_sgtable = NULL; 1103 cm->cm_flags = 0; 1104 cm->cm_complete = NULL; 1105 cm->cm_private = NULL; 1106 cm->cm_fib->Header.XferState = AAC_FIBSTATE_EMPTY; 1107 cm->cm_fib->Header.StructType = AAC_FIBTYPE_TFIB; 1108 cm->cm_fib->Header.Flags = 0; 1109 cm->cm_fib->Header.SenderSize = sizeof(struct aac_fib); 1110 1111 /* 1112 * These are duplicated in aac_start to cover the case where an 1113 * intermediate stage may have destroyed them. They're left 1114 * initialised here for debugging purposes only. 1115 */ 1116 cm->cm_fib->Header.ReceiverFibAddress = (u_int32_t)cm->cm_fibphys; 1117 cm->cm_fib->Header.SenderData = 0; 1118 1119 aac_enqueue_free(cm); 1120 } 1121 1122 /* 1123 * Map helper for command/FIB allocation. 1124 */ 1125 static void 1126 aac_map_command_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1127 { 1128 uint32_t *fibphys; 1129 1130 fibphys = (uint32_t *)arg; 1131 1132 debug_called(3); 1133 1134 *fibphys = segs[0].ds_addr; 1135 } 1136 1137 /* 1138 * Allocate and initialise commands/FIBs for this adapter. 1139 */ 1140 static int 1141 aac_alloc_commands(struct aac_softc *sc) 1142 { 1143 struct aac_command *cm; 1144 struct aac_fibmap *fm; 1145 uint32_t fibphys; 1146 int i, error; 1147 1148 debug_called(2); 1149 1150 if (sc->total_fibs + AAC_FIB_COUNT > sc->aac_max_fibs) 1151 return (ENOMEM); 1152 1153 fm = malloc(sizeof(struct aac_fibmap), M_AACBUF, M_NOWAIT|M_ZERO); 1154 if (fm == NULL) 1155 return (ENOMEM); 1156 1157 /* allocate the FIBs in DMAable memory and load them */ 1158 if (bus_dmamem_alloc(sc->aac_fib_dmat, (void **)&fm->aac_fibs, 1159 BUS_DMA_NOWAIT, &fm->aac_fibmap)) { 1160 device_printf(sc->aac_dev, 1161 "Not enough contiguous memory available.\n"); 1162 free(fm, M_AACBUF); 1163 return (ENOMEM); 1164 } 1165 1166 /* Ignore errors since this doesn't bounce */ 1167 (void)bus_dmamap_load(sc->aac_fib_dmat, fm->aac_fibmap, fm->aac_fibs, 1168 AAC_FIB_COUNT * sizeof(struct aac_fib), 1169 aac_map_command_helper, &fibphys, 0); 1170 1171 /* initialise constant fields in the command structure */ 1172 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 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 AAC_LOCK_RELEASE(&sc->aac_io_lock); 1194 return (0); 1195 } 1196 1197 AAC_LOCK_RELEASE(&sc->aac_io_lock); 1198 bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap); 1199 bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap); 1200 free(fm, M_AACBUF); 1201 return (ENOMEM); 1202 } 1203 1204 /* 1205 * Free FIBs owned by this adapter. 1206 */ 1207 static void 1208 aac_free_commands(struct aac_softc *sc) 1209 { 1210 struct aac_fibmap *fm; 1211 struct aac_command *cm; 1212 int i; 1213 1214 debug_called(1); 1215 1216 while ((fm = TAILQ_FIRST(&sc->aac_fibmap_tqh)) != NULL) { 1217 1218 TAILQ_REMOVE(&sc->aac_fibmap_tqh, fm, fm_link); 1219 /* 1220 * We check against total_fibs to handle partially 1221 * allocated blocks. 1222 */ 1223 for (i = 0; i < AAC_FIB_COUNT && sc->total_fibs--; i++) { 1224 cm = fm->aac_commands + i; 1225 bus_dmamap_destroy(sc->aac_buffer_dmat, cm->cm_datamap); 1226 } 1227 bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap); 1228 bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap); 1229 free(fm, M_AACBUF); 1230 } 1231 } 1232 1233 /* 1234 * Command-mapping helper function - populate this command's s/g table. 1235 */ 1236 static void 1237 aac_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1238 { 1239 struct aac_softc *sc; 1240 struct aac_command *cm; 1241 struct aac_fib *fib; 1242 int i; 1243 1244 debug_called(3); 1245 1246 cm = (struct aac_command *)arg; 1247 sc = cm->cm_sc; 1248 fib = cm->cm_fib; 1249 1250 /* copy into the FIB */ 1251 if (cm->cm_sgtable != NULL) { 1252 if ((cm->cm_sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 1253 struct aac_sg_table *sg; 1254 sg = cm->cm_sgtable; 1255 sg->SgCount = nseg; 1256 for (i = 0; i < nseg; i++) { 1257 sg->SgEntry[i].SgAddress = segs[i].ds_addr; 1258 sg->SgEntry[i].SgByteCount = segs[i].ds_len; 1259 } 1260 /* update the FIB size for the s/g count */ 1261 fib->Header.Size += nseg * sizeof(struct aac_sg_entry); 1262 } else { 1263 struct aac_sg_table64 *sg; 1264 sg = (struct aac_sg_table64 *)cm->cm_sgtable; 1265 sg->SgCount = nseg; 1266 for (i = 0; i < nseg; i++) { 1267 sg->SgEntry64[i].SgAddress = segs[i].ds_addr; 1268 sg->SgEntry64[i].SgByteCount = segs[i].ds_len; 1269 } 1270 /* update the FIB size for the s/g count */ 1271 fib->Header.Size += nseg*sizeof(struct aac_sg_entry64); 1272 } 1273 } 1274 1275 /* Fix up the address values in the FIB. Use the command array index 1276 * instead of a pointer since these fields are only 32 bits. Shift 1277 * the SenderFibAddress over to make room for the fast response bit. 1278 */ 1279 cm->cm_fib->Header.SenderFibAddress = (cm->cm_index << 1); 1280 cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys; 1281 1282 /* save a pointer to the command for speedy reverse-lookup */ 1283 cm->cm_fib->Header.SenderData = cm->cm_index; 1284 1285 if (cm->cm_flags & AAC_CMD_DATAIN) 1286 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1287 BUS_DMASYNC_PREREAD); 1288 if (cm->cm_flags & AAC_CMD_DATAOUT) 1289 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1290 BUS_DMASYNC_PREWRITE); 1291 cm->cm_flags |= AAC_CMD_MAPPED; 1292 1293 /* put the FIB on the outbound queue */ 1294 if (aac_enqueue_fib(sc, cm->cm_queue, cm) == EBUSY) { 1295 aac_unmap_command(cm); 1296 aac_requeue_ready(cm); 1297 } 1298 1299 return; 1300 } 1301 1302 /* 1303 * Unmap a command from controller-visible space. 1304 */ 1305 static void 1306 aac_unmap_command(struct aac_command *cm) 1307 { 1308 struct aac_softc *sc; 1309 1310 debug_called(2); 1311 1312 sc = cm->cm_sc; 1313 1314 if (!(cm->cm_flags & AAC_CMD_MAPPED)) 1315 return; 1316 1317 if (cm->cm_datalen != 0) { 1318 if (cm->cm_flags & AAC_CMD_DATAIN) 1319 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1320 BUS_DMASYNC_POSTREAD); 1321 if (cm->cm_flags & AAC_CMD_DATAOUT) 1322 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1323 BUS_DMASYNC_POSTWRITE); 1324 1325 bus_dmamap_unload(sc->aac_buffer_dmat, cm->cm_datamap); 1326 } 1327 cm->cm_flags &= ~AAC_CMD_MAPPED; 1328 } 1329 1330 /* 1331 * Hardware Interface 1332 */ 1333 1334 /* 1335 * Initialise the adapter. 1336 */ 1337 static void 1338 aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1339 { 1340 struct aac_softc *sc; 1341 1342 debug_called(1); 1343 1344 sc = (struct aac_softc *)arg; 1345 1346 sc->aac_common_busaddr = segs[0].ds_addr; 1347 } 1348 1349 static int 1350 aac_check_firmware(struct aac_softc *sc) 1351 { 1352 u_int32_t major, minor, options; 1353 1354 debug_called(1); 1355 1356 /* 1357 * Retrieve the firmware version numbers. Dell PERC2/QC cards with 1358 * firmware version 1.x are not compatible with this driver. 1359 */ 1360 if (sc->flags & AAC_FLAGS_PERC2QC) { 1361 if (aac_sync_command(sc, AAC_MONKER_GETKERNVER, 0, 0, 0, 0, 1362 NULL)) { 1363 device_printf(sc->aac_dev, 1364 "Error reading firmware version\n"); 1365 return (EIO); 1366 } 1367 1368 /* These numbers are stored as ASCII! */ 1369 major = (AAC_GET_MAILBOX(sc, 1) & 0xff) - 0x30; 1370 minor = (AAC_GET_MAILBOX(sc, 2) & 0xff) - 0x30; 1371 if (major == 1) { 1372 device_printf(sc->aac_dev, 1373 "Firmware version %d.%d is not supported.\n", 1374 major, minor); 1375 return (EINVAL); 1376 } 1377 } 1378 1379 /* 1380 * Retrieve the capabilities/supported options word so we know what 1381 * work-arounds to enable. 1382 */ 1383 if (aac_sync_command(sc, AAC_MONKER_GETINFO, 0, 0, 0, 0, NULL)) { 1384 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 1385 return (EIO); 1386 } 1387 options = AAC_GET_MAILBOX(sc, 1); 1388 sc->supported_options = options; 1389 1390 if ((options & AAC_SUPPORTED_4GB_WINDOW) != 0 && 1391 (sc->flags & AAC_FLAGS_NO4GB) == 0) 1392 sc->flags |= AAC_FLAGS_4GB_WINDOW; 1393 if (options & AAC_SUPPORTED_NONDASD) 1394 sc->flags |= AAC_FLAGS_ENABLE_CAM; 1395 if ((options & AAC_SUPPORTED_SGMAP_HOST64) != 0 1396 && (sizeof(bus_addr_t) > 4)) { 1397 device_printf(sc->aac_dev, "Enabling 64-bit address support\n"); 1398 sc->flags |= AAC_FLAGS_SG_64BIT; 1399 } 1400 1401 /* Check for broken hardware that does a lower number of commands */ 1402 if ((sc->flags & AAC_FLAGS_256FIBS) == 0) 1403 sc->aac_max_fibs = AAC_MAX_FIBS; 1404 else 1405 sc->aac_max_fibs = 256; 1406 1407 return (0); 1408 } 1409 1410 static int 1411 aac_init(struct aac_softc *sc) 1412 { 1413 struct aac_adapter_init *ip; 1414 time_t then; 1415 u_int32_t code, qoffset; 1416 int error; 1417 1418 debug_called(1); 1419 1420 /* 1421 * First wait for the adapter to come ready. 1422 */ 1423 then = time_second; 1424 do { 1425 code = AAC_GET_FWSTATUS(sc); 1426 if (code & AAC_SELF_TEST_FAILED) { 1427 device_printf(sc->aac_dev, "FATAL: selftest failed\n"); 1428 return(ENXIO); 1429 } 1430 if (code & AAC_KERNEL_PANIC) { 1431 device_printf(sc->aac_dev, 1432 "FATAL: controller kernel panic\n"); 1433 return(ENXIO); 1434 } 1435 if (time_second > (then + AAC_BOOT_TIMEOUT)) { 1436 device_printf(sc->aac_dev, 1437 "FATAL: controller not coming ready, " 1438 "status %x\n", code); 1439 return(ENXIO); 1440 } 1441 } while (!(code & AAC_UP_AND_RUNNING)); 1442 1443 error = ENOMEM; 1444 /* 1445 * Create DMA tag for mapping buffers into controller-addressable space. 1446 */ 1447 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1448 1, 0, /* algnmnt, boundary */ 1449 (sc->flags & AAC_FLAGS_SG_64BIT) ? 1450 BUS_SPACE_MAXADDR : 1451 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 1452 BUS_SPACE_MAXADDR, /* highaddr */ 1453 NULL, NULL, /* filter, filterarg */ 1454 MAXBSIZE, /* maxsize */ 1455 AAC_MAXSGENTRIES, /* nsegments */ 1456 MAXBSIZE, /* maxsegsize */ 1457 BUS_DMA_ALLOCNOW, /* flags */ 1458 busdma_lock_mutex, /* lockfunc */ 1459 &sc->aac_io_lock, /* lockfuncarg */ 1460 &sc->aac_buffer_dmat)) { 1461 device_printf(sc->aac_dev, "can't allocate buffer DMA tag\n"); 1462 goto out; 1463 } 1464 1465 /* 1466 * Create DMA tag for mapping FIBs into controller-addressable space.. 1467 */ 1468 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1469 1, 0, /* algnmnt, boundary */ 1470 (sc->flags & AAC_FLAGS_4GB_WINDOW) ? 1471 BUS_SPACE_MAXADDR_32BIT : 1472 0x7fffffff, /* lowaddr */ 1473 BUS_SPACE_MAXADDR, /* highaddr */ 1474 NULL, NULL, /* filter, filterarg */ 1475 AAC_FIB_COUNT * 1476 sizeof(struct aac_fib), /* maxsize */ 1477 1, /* nsegments */ 1478 AAC_FIB_COUNT * 1479 sizeof(struct aac_fib), /* maxsegsize */ 1480 BUS_DMA_ALLOCNOW, /* flags */ 1481 NULL, NULL, /* No locking needed */ 1482 &sc->aac_fib_dmat)) { 1483 device_printf(sc->aac_dev, "can't allocate FIB DMA tag\n");; 1484 goto out; 1485 } 1486 1487 /* 1488 * Create DMA tag for the common structure and allocate it. 1489 */ 1490 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1491 1, 0, /* algnmnt, boundary */ 1492 (sc->flags & AAC_FLAGS_4GB_WINDOW) ? 1493 BUS_SPACE_MAXADDR_32BIT : 1494 0x7fffffff, /* lowaddr */ 1495 BUS_SPACE_MAXADDR, /* highaddr */ 1496 NULL, NULL, /* filter, filterarg */ 1497 8192 + sizeof(struct aac_common), /* maxsize */ 1498 1, /* nsegments */ 1499 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 1500 BUS_DMA_ALLOCNOW, /* flags */ 1501 NULL, NULL, /* No locking needed */ 1502 &sc->aac_common_dmat)) { 1503 device_printf(sc->aac_dev, 1504 "can't allocate common structure DMA tag\n"); 1505 goto out; 1506 } 1507 if (bus_dmamem_alloc(sc->aac_common_dmat, (void **)&sc->aac_common, 1508 BUS_DMA_NOWAIT, &sc->aac_common_dmamap)) { 1509 device_printf(sc->aac_dev, "can't allocate common structure\n"); 1510 goto out; 1511 } 1512 1513 /* 1514 * Work around a bug in the 2120 and 2200 that cannot DMA commands 1515 * below address 8192 in physical memory. 1516 * XXX If the padding is not needed, can it be put to use instead 1517 * of ignored? 1518 */ 1519 (void)bus_dmamap_load(sc->aac_common_dmat, sc->aac_common_dmamap, 1520 sc->aac_common, 8192 + sizeof(*sc->aac_common), 1521 aac_common_map, sc, 0); 1522 1523 if (sc->aac_common_busaddr < 8192) { 1524 (uint8_t *)sc->aac_common += 8192; 1525 sc->aac_common_busaddr += 8192; 1526 } 1527 bzero(sc->aac_common, sizeof(*sc->aac_common)); 1528 1529 /* Allocate some FIBs and associated command structs */ 1530 TAILQ_INIT(&sc->aac_fibmap_tqh); 1531 sc->aac_commands = malloc(AAC_MAX_FIBS * sizeof(struct aac_command), 1532 M_AACBUF, M_WAITOK|M_ZERO); 1533 while (sc->total_fibs < AAC_PREALLOCATE_FIBS) { 1534 if (aac_alloc_commands(sc) != 0) 1535 break; 1536 } 1537 if (sc->total_fibs == 0) 1538 goto out; 1539 1540 /* 1541 * Fill in the init structure. This tells the adapter about the 1542 * physical location of various important shared data structures. 1543 */ 1544 ip = &sc->aac_common->ac_init; 1545 ip->InitStructRevision = AAC_INIT_STRUCT_REVISION; 1546 ip->MiniPortRevision = AAC_INIT_STRUCT_MINIPORT_REVISION; 1547 1548 ip->AdapterFibsPhysicalAddress = sc->aac_common_busaddr + 1549 offsetof(struct aac_common, ac_fibs); 1550 ip->AdapterFibsVirtualAddress = 0; 1551 ip->AdapterFibsSize = AAC_ADAPTER_FIBS * sizeof(struct aac_fib); 1552 ip->AdapterFibAlign = sizeof(struct aac_fib); 1553 1554 ip->PrintfBufferAddress = sc->aac_common_busaddr + 1555 offsetof(struct aac_common, ac_printf); 1556 ip->PrintfBufferSize = AAC_PRINTF_BUFSIZE; 1557 1558 /* 1559 * The adapter assumes that pages are 4K in size, except on some 1560 * broken firmware versions that do the page->byte conversion twice, 1561 * therefore 'assuming' that this value is in 16MB units (2^24). 1562 * Round up since the granularity is so high. 1563 */ 1564 ip->HostPhysMemPages = ctob(physmem) / AAC_PAGE_SIZE; 1565 if (sc->flags & AAC_FLAGS_BROKEN_MEMMAP) { 1566 ip->HostPhysMemPages = 1567 (ip->HostPhysMemPages + AAC_PAGE_SIZE) / AAC_PAGE_SIZE; 1568 } 1569 ip->HostElapsedSeconds = time_second; /* reset later if invalid */ 1570 1571 /* 1572 * Initialise FIB queues. Note that it appears that the layout of the 1573 * indexes and the segmentation of the entries may be mandated by the 1574 * adapter, which is only told about the base of the queue index fields. 1575 * 1576 * The initial values of the indices are assumed to inform the adapter 1577 * of the sizes of the respective queues, and theoretically it could 1578 * work out the entire layout of the queue structures from this. We 1579 * take the easy route and just lay this area out like everyone else 1580 * does. 1581 * 1582 * The Linux driver uses a much more complex scheme whereby several 1583 * header records are kept for each queue. We use a couple of generic 1584 * list manipulation functions which 'know' the size of each list by 1585 * virtue of a table. 1586 */ 1587 qoffset = offsetof(struct aac_common, ac_qbuf) + AAC_QUEUE_ALIGN; 1588 qoffset &= ~(AAC_QUEUE_ALIGN - 1); 1589 sc->aac_queues = 1590 (struct aac_queue_table *)((uintptr_t)sc->aac_common + qoffset); 1591 ip->CommHeaderAddress = sc->aac_common_busaddr + qoffset; 1592 1593 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1594 AAC_HOST_NORM_CMD_ENTRIES; 1595 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1596 AAC_HOST_NORM_CMD_ENTRIES; 1597 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1598 AAC_HOST_HIGH_CMD_ENTRIES; 1599 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1600 AAC_HOST_HIGH_CMD_ENTRIES; 1601 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1602 AAC_ADAP_NORM_CMD_ENTRIES; 1603 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1604 AAC_ADAP_NORM_CMD_ENTRIES; 1605 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1606 AAC_ADAP_HIGH_CMD_ENTRIES; 1607 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1608 AAC_ADAP_HIGH_CMD_ENTRIES; 1609 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1610 AAC_HOST_NORM_RESP_ENTRIES; 1611 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1612 AAC_HOST_NORM_RESP_ENTRIES; 1613 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1614 AAC_HOST_HIGH_RESP_ENTRIES; 1615 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1616 AAC_HOST_HIGH_RESP_ENTRIES; 1617 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1618 AAC_ADAP_NORM_RESP_ENTRIES; 1619 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1620 AAC_ADAP_NORM_RESP_ENTRIES; 1621 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1622 AAC_ADAP_HIGH_RESP_ENTRIES; 1623 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1624 AAC_ADAP_HIGH_RESP_ENTRIES; 1625 sc->aac_qentries[AAC_HOST_NORM_CMD_QUEUE] = 1626 &sc->aac_queues->qt_HostNormCmdQueue[0]; 1627 sc->aac_qentries[AAC_HOST_HIGH_CMD_QUEUE] = 1628 &sc->aac_queues->qt_HostHighCmdQueue[0]; 1629 sc->aac_qentries[AAC_ADAP_NORM_CMD_QUEUE] = 1630 &sc->aac_queues->qt_AdapNormCmdQueue[0]; 1631 sc->aac_qentries[AAC_ADAP_HIGH_CMD_QUEUE] = 1632 &sc->aac_queues->qt_AdapHighCmdQueue[0]; 1633 sc->aac_qentries[AAC_HOST_NORM_RESP_QUEUE] = 1634 &sc->aac_queues->qt_HostNormRespQueue[0]; 1635 sc->aac_qentries[AAC_HOST_HIGH_RESP_QUEUE] = 1636 &sc->aac_queues->qt_HostHighRespQueue[0]; 1637 sc->aac_qentries[AAC_ADAP_NORM_RESP_QUEUE] = 1638 &sc->aac_queues->qt_AdapNormRespQueue[0]; 1639 sc->aac_qentries[AAC_ADAP_HIGH_RESP_QUEUE] = 1640 &sc->aac_queues->qt_AdapHighRespQueue[0]; 1641 1642 /* 1643 * Do controller-type-specific initialisation 1644 */ 1645 switch (sc->aac_hwif) { 1646 case AAC_HWIF_I960RX: 1647 AAC_SETREG4(sc, AAC_RX_ODBR, ~0); 1648 break; 1649 } 1650 1651 /* 1652 * Give the init structure to the controller. 1653 */ 1654 if (aac_sync_command(sc, AAC_MONKER_INITSTRUCT, 1655 sc->aac_common_busaddr + 1656 offsetof(struct aac_common, ac_init), 0, 0, 0, 1657 NULL)) { 1658 device_printf(sc->aac_dev, 1659 "error establishing init structure\n"); 1660 error = EIO; 1661 goto out; 1662 } 1663 1664 error = 0; 1665 out: 1666 return(error); 1667 } 1668 1669 /* 1670 * Send a synchronous command to the controller and wait for a result. 1671 */ 1672 static int 1673 aac_sync_command(struct aac_softc *sc, u_int32_t command, 1674 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3, 1675 u_int32_t *sp) 1676 { 1677 time_t then; 1678 u_int32_t status; 1679 1680 debug_called(3); 1681 1682 /* populate the mailbox */ 1683 AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3); 1684 1685 /* ensure the sync command doorbell flag is cleared */ 1686 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1687 1688 /* then set it to signal the adapter */ 1689 AAC_QNOTIFY(sc, AAC_DB_SYNC_COMMAND); 1690 1691 /* spin waiting for the command to complete */ 1692 then = time_second; 1693 do { 1694 if (time_second > (then + AAC_IMMEDIATE_TIMEOUT)) { 1695 debug(1, "timed out"); 1696 return(EIO); 1697 } 1698 } while (!(AAC_GET_ISTATUS(sc) & AAC_DB_SYNC_COMMAND)); 1699 1700 /* clear the completion flag */ 1701 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1702 1703 /* get the command status */ 1704 status = AAC_GET_MAILBOX(sc, 0); 1705 if (sp != NULL) 1706 *sp = status; 1707 return(0); 1708 } 1709 1710 /* 1711 * Grab the sync fib area. 1712 */ 1713 int 1714 aac_alloc_sync_fib(struct aac_softc *sc, struct aac_fib **fib, int flags) 1715 { 1716 1717 /* 1718 * If the force flag is set, the system is shutting down, or in 1719 * trouble. Ignore the mutex. 1720 */ 1721 if (!(flags & AAC_SYNC_LOCK_FORCE)) 1722 AAC_LOCK_ACQUIRE(&sc->aac_sync_lock); 1723 1724 *fib = &sc->aac_common->ac_sync_fib; 1725 1726 return (1); 1727 } 1728 1729 /* 1730 * Release the sync fib area. 1731 */ 1732 void 1733 aac_release_sync_fib(struct aac_softc *sc) 1734 { 1735 1736 AAC_LOCK_RELEASE(&sc->aac_sync_lock); 1737 } 1738 1739 /* 1740 * Send a synchronous FIB to the controller and wait for a result. 1741 */ 1742 int 1743 aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate, 1744 struct aac_fib *fib, u_int16_t datasize) 1745 { 1746 debug_called(3); 1747 1748 if (datasize > AAC_FIB_DATASIZE) 1749 return(EINVAL); 1750 1751 /* 1752 * Set up the sync FIB 1753 */ 1754 fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED | 1755 AAC_FIBSTATE_INITIALISED | 1756 AAC_FIBSTATE_EMPTY; 1757 fib->Header.XferState |= xferstate; 1758 fib->Header.Command = command; 1759 fib->Header.StructType = AAC_FIBTYPE_TFIB; 1760 fib->Header.Size = sizeof(struct aac_fib) + datasize; 1761 fib->Header.SenderSize = sizeof(struct aac_fib); 1762 fib->Header.SenderFibAddress = 0; /* Not needed */ 1763 fib->Header.ReceiverFibAddress = sc->aac_common_busaddr + 1764 offsetof(struct aac_common, 1765 ac_sync_fib); 1766 1767 /* 1768 * Give the FIB to the controller, wait for a response. 1769 */ 1770 if (aac_sync_command(sc, AAC_MONKER_SYNCFIB, 1771 fib->Header.ReceiverFibAddress, 0, 0, 0, NULL)) { 1772 debug(2, "IO error"); 1773 return(EIO); 1774 } 1775 1776 return (0); 1777 } 1778 1779 /* 1780 * Adapter-space FIB queue manipulation 1781 * 1782 * Note that the queue implementation here is a little funky; neither the PI or 1783 * CI will ever be zero. This behaviour is a controller feature. 1784 */ 1785 static struct { 1786 int size; 1787 int notify; 1788 } aac_qinfo[] = { 1789 {AAC_HOST_NORM_CMD_ENTRIES, AAC_DB_COMMAND_NOT_FULL}, 1790 {AAC_HOST_HIGH_CMD_ENTRIES, 0}, 1791 {AAC_ADAP_NORM_CMD_ENTRIES, AAC_DB_COMMAND_READY}, 1792 {AAC_ADAP_HIGH_CMD_ENTRIES, 0}, 1793 {AAC_HOST_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_NOT_FULL}, 1794 {AAC_HOST_HIGH_RESP_ENTRIES, 0}, 1795 {AAC_ADAP_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_READY}, 1796 {AAC_ADAP_HIGH_RESP_ENTRIES, 0} 1797 }; 1798 1799 /* 1800 * Atomically insert an entry into the nominated queue, returns 0 on success or 1801 * EBUSY if the queue is full. 1802 * 1803 * Note: it would be more efficient to defer notifying the controller in 1804 * the case where we may be inserting several entries in rapid succession, 1805 * but implementing this usefully may be difficult (it would involve a 1806 * separate queue/notify interface). 1807 */ 1808 static int 1809 aac_enqueue_fib(struct aac_softc *sc, int queue, struct aac_command *cm) 1810 { 1811 u_int32_t pi, ci; 1812 int error; 1813 u_int32_t fib_size; 1814 u_int32_t fib_addr; 1815 1816 debug_called(3); 1817 1818 fib_size = cm->cm_fib->Header.Size; 1819 fib_addr = cm->cm_fib->Header.ReceiverFibAddress; 1820 1821 /* get the producer/consumer indices */ 1822 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1823 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1824 1825 /* wrap the queue? */ 1826 if (pi >= aac_qinfo[queue].size) 1827 pi = 0; 1828 1829 /* check for queue full */ 1830 if ((pi + 1) == ci) { 1831 error = EBUSY; 1832 goto out; 1833 } 1834 1835 /* populate queue entry */ 1836 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1837 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1838 1839 /* update producer index */ 1840 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1841 1842 /* 1843 * To avoid a race with its completion interrupt, place this command on 1844 * the busy queue prior to advertising it to the controller. 1845 */ 1846 aac_enqueue_busy(cm); 1847 1848 /* notify the adapter if we know how */ 1849 if (aac_qinfo[queue].notify != 0) 1850 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1851 1852 error = 0; 1853 1854 out: 1855 return(error); 1856 } 1857 1858 /* 1859 * Atomically remove one entry from the nominated queue, returns 0 on 1860 * success or ENOENT if the queue is empty. 1861 */ 1862 static int 1863 aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size, 1864 struct aac_fib **fib_addr) 1865 { 1866 u_int32_t pi, ci; 1867 u_int32_t fib_index; 1868 int error; 1869 int notify; 1870 1871 debug_called(3); 1872 1873 /* get the producer/consumer indices */ 1874 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1875 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1876 1877 /* check for queue empty */ 1878 if (ci == pi) { 1879 error = ENOENT; 1880 goto out; 1881 } 1882 1883 /* wrap the pi so the following test works */ 1884 if (pi >= aac_qinfo[queue].size) 1885 pi = 0; 1886 1887 notify = 0; 1888 if (ci == pi + 1) 1889 notify++; 1890 1891 /* wrap the queue? */ 1892 if (ci >= aac_qinfo[queue].size) 1893 ci = 0; 1894 1895 /* fetch the entry */ 1896 *fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size; 1897 1898 switch (queue) { 1899 case AAC_HOST_NORM_CMD_QUEUE: 1900 case AAC_HOST_HIGH_CMD_QUEUE: 1901 /* 1902 * The aq_fib_addr is only 32 bits wide so it can't be counted 1903 * on to hold an address. For AIF's, the adapter assumes 1904 * that it's giving us an address into the array of AIF fibs. 1905 * Therefore, we have to convert it to an index. 1906 */ 1907 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr / 1908 sizeof(struct aac_fib); 1909 *fib_addr = &sc->aac_common->ac_fibs[fib_index]; 1910 break; 1911 1912 case AAC_HOST_NORM_RESP_QUEUE: 1913 case AAC_HOST_HIGH_RESP_QUEUE: 1914 { 1915 struct aac_command *cm; 1916 1917 /* 1918 * As above, an index is used instead of an actual address. 1919 * Gotta shift the index to account for the fast response 1920 * bit. No other correction is needed since this value was 1921 * originally provided by the driver via the SenderFibAddress 1922 * field. 1923 */ 1924 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr; 1925 cm = sc->aac_commands + (fib_index >> 1); 1926 *fib_addr = cm->cm_fib; 1927 1928 /* 1929 * Is this a fast response? If it is, update the fib fields in 1930 * local memory since the whole fib isn't DMA'd back up. 1931 */ 1932 if (fib_index & 0x01) { 1933 (*fib_addr)->Header.XferState |= AAC_FIBSTATE_DONEADAP; 1934 *((u_int32_t*)((*fib_addr)->data)) = AAC_ERROR_NORMAL; 1935 } 1936 break; 1937 } 1938 default: 1939 panic("Invalid queue in aac_dequeue_fib()"); 1940 break; 1941 } 1942 1943 /* update consumer index */ 1944 sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1; 1945 1946 /* if we have made the queue un-full, notify the adapter */ 1947 if (notify && (aac_qinfo[queue].notify != 0)) 1948 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1949 error = 0; 1950 1951 out: 1952 return(error); 1953 } 1954 1955 /* 1956 * Put our response to an Adapter Initialed Fib on the response queue 1957 */ 1958 static int 1959 aac_enqueue_response(struct aac_softc *sc, int queue, struct aac_fib *fib) 1960 { 1961 u_int32_t pi, ci; 1962 int error; 1963 u_int32_t fib_size; 1964 u_int32_t fib_addr; 1965 1966 debug_called(1); 1967 1968 /* Tell the adapter where the FIB is */ 1969 fib_size = fib->Header.Size; 1970 fib_addr = fib->Header.SenderFibAddress; 1971 fib->Header.ReceiverFibAddress = fib_addr; 1972 1973 /* get the producer/consumer indices */ 1974 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1975 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1976 1977 /* wrap the queue? */ 1978 if (pi >= aac_qinfo[queue].size) 1979 pi = 0; 1980 1981 /* check for queue full */ 1982 if ((pi + 1) == ci) { 1983 error = EBUSY; 1984 goto out; 1985 } 1986 1987 /* populate queue entry */ 1988 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1989 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1990 1991 /* update producer index */ 1992 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1993 1994 /* notify the adapter if we know how */ 1995 if (aac_qinfo[queue].notify != 0) 1996 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1997 1998 error = 0; 1999 2000 out: 2001 return(error); 2002 } 2003 2004 /* 2005 * Check for commands that have been outstanding for a suspiciously long time, 2006 * and complain about them. 2007 */ 2008 static void 2009 aac_timeout(struct aac_softc *sc) 2010 { 2011 struct aac_command *cm; 2012 time_t deadline; 2013 2014 /* 2015 * Traverse the busy command list, bitch about late commands once 2016 * only. 2017 */ 2018 deadline = time_second - AAC_CMD_TIMEOUT; 2019 TAILQ_FOREACH(cm, &sc->aac_busy, cm_link) { 2020 if ((cm->cm_timestamp < deadline) 2021 /* && !(cm->cm_flags & AAC_CMD_TIMEDOUT) */) { 2022 cm->cm_flags |= AAC_CMD_TIMEDOUT; 2023 device_printf(sc->aac_dev, 2024 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", 2025 cm, (int)(time_second-cm->cm_timestamp)); 2026 AAC_PRINT_FIB(sc, cm->cm_fib); 2027 } 2028 } 2029 2030 return; 2031 } 2032 2033 /* 2034 * Interface Function Vectors 2035 */ 2036 2037 /* 2038 * Read the current firmware status word. 2039 */ 2040 static int 2041 aac_sa_get_fwstatus(struct aac_softc *sc) 2042 { 2043 debug_called(3); 2044 2045 return(AAC_GETREG4(sc, AAC_SA_FWSTATUS)); 2046 } 2047 2048 static int 2049 aac_rx_get_fwstatus(struct aac_softc *sc) 2050 { 2051 debug_called(3); 2052 2053 return(AAC_GETREG4(sc, AAC_RX_FWSTATUS)); 2054 } 2055 2056 static int 2057 aac_fa_get_fwstatus(struct aac_softc *sc) 2058 { 2059 int val; 2060 2061 debug_called(3); 2062 2063 val = AAC_GETREG4(sc, AAC_FA_FWSTATUS); 2064 return (val); 2065 } 2066 2067 /* 2068 * Notify the controller of a change in a given queue 2069 */ 2070 2071 static void 2072 aac_sa_qnotify(struct aac_softc *sc, int qbit) 2073 { 2074 debug_called(3); 2075 2076 AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit); 2077 } 2078 2079 static void 2080 aac_rx_qnotify(struct aac_softc *sc, int qbit) 2081 { 2082 debug_called(3); 2083 2084 AAC_SETREG4(sc, AAC_RX_IDBR, qbit); 2085 } 2086 2087 static void 2088 aac_fa_qnotify(struct aac_softc *sc, int qbit) 2089 { 2090 debug_called(3); 2091 2092 AAC_SETREG2(sc, AAC_FA_DOORBELL1, qbit); 2093 AAC_FA_HACK(sc); 2094 } 2095 2096 /* 2097 * Get the interrupt reason bits 2098 */ 2099 static int 2100 aac_sa_get_istatus(struct aac_softc *sc) 2101 { 2102 debug_called(3); 2103 2104 return(AAC_GETREG2(sc, AAC_SA_DOORBELL0)); 2105 } 2106 2107 static int 2108 aac_rx_get_istatus(struct aac_softc *sc) 2109 { 2110 debug_called(3); 2111 2112 return(AAC_GETREG4(sc, AAC_RX_ODBR)); 2113 } 2114 2115 static int 2116 aac_fa_get_istatus(struct aac_softc *sc) 2117 { 2118 int val; 2119 2120 debug_called(3); 2121 2122 val = AAC_GETREG2(sc, AAC_FA_DOORBELL0); 2123 return (val); 2124 } 2125 2126 /* 2127 * Clear some interrupt reason bits 2128 */ 2129 static void 2130 aac_sa_clear_istatus(struct aac_softc *sc, int mask) 2131 { 2132 debug_called(3); 2133 2134 AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask); 2135 } 2136 2137 static void 2138 aac_rx_clear_istatus(struct aac_softc *sc, int mask) 2139 { 2140 debug_called(3); 2141 2142 AAC_SETREG4(sc, AAC_RX_ODBR, mask); 2143 } 2144 2145 static void 2146 aac_fa_clear_istatus(struct aac_softc *sc, int mask) 2147 { 2148 debug_called(3); 2149 2150 AAC_SETREG2(sc, AAC_FA_DOORBELL0_CLEAR, mask); 2151 AAC_FA_HACK(sc); 2152 } 2153 2154 /* 2155 * Populate the mailbox and set the command word 2156 */ 2157 static void 2158 aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2159 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2160 { 2161 debug_called(4); 2162 2163 AAC_SETREG4(sc, AAC_SA_MAILBOX, command); 2164 AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0); 2165 AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1); 2166 AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2); 2167 AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3); 2168 } 2169 2170 static void 2171 aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 2172 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2173 { 2174 debug_called(4); 2175 2176 AAC_SETREG4(sc, AAC_RX_MAILBOX, command); 2177 AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0); 2178 AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1); 2179 AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2); 2180 AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3); 2181 } 2182 2183 static void 2184 aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2185 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2186 { 2187 debug_called(4); 2188 2189 AAC_SETREG4(sc, AAC_FA_MAILBOX, command); 2190 AAC_FA_HACK(sc); 2191 AAC_SETREG4(sc, AAC_FA_MAILBOX + 4, arg0); 2192 AAC_FA_HACK(sc); 2193 AAC_SETREG4(sc, AAC_FA_MAILBOX + 8, arg1); 2194 AAC_FA_HACK(sc); 2195 AAC_SETREG4(sc, AAC_FA_MAILBOX + 12, arg2); 2196 AAC_FA_HACK(sc); 2197 AAC_SETREG4(sc, AAC_FA_MAILBOX + 16, arg3); 2198 AAC_FA_HACK(sc); 2199 } 2200 2201 /* 2202 * Fetch the immediate command status word 2203 */ 2204 static int 2205 aac_sa_get_mailbox(struct aac_softc *sc, int mb) 2206 { 2207 debug_called(4); 2208 2209 return(AAC_GETREG4(sc, AAC_SA_MAILBOX + (mb * 4))); 2210 } 2211 2212 static int 2213 aac_rx_get_mailbox(struct aac_softc *sc, int mb) 2214 { 2215 debug_called(4); 2216 2217 return(AAC_GETREG4(sc, AAC_RX_MAILBOX + (mb * 4))); 2218 } 2219 2220 static int 2221 aac_fa_get_mailbox(struct aac_softc *sc, int mb) 2222 { 2223 int val; 2224 2225 debug_called(4); 2226 2227 val = AAC_GETREG4(sc, AAC_FA_MAILBOX + (mb * 4)); 2228 return (val); 2229 } 2230 2231 /* 2232 * Set/clear interrupt masks 2233 */ 2234 static void 2235 aac_sa_set_interrupts(struct aac_softc *sc, int enable) 2236 { 2237 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2238 2239 if (enable) { 2240 AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2241 } else { 2242 AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0); 2243 } 2244 } 2245 2246 static void 2247 aac_rx_set_interrupts(struct aac_softc *sc, int enable) 2248 { 2249 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2250 2251 if (enable) { 2252 AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS); 2253 } else { 2254 AAC_SETREG4(sc, AAC_RX_OIMR, ~0); 2255 } 2256 } 2257 2258 static void 2259 aac_fa_set_interrupts(struct aac_softc *sc, int enable) 2260 { 2261 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2262 2263 if (enable) { 2264 AAC_SETREG2((sc), AAC_FA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2265 AAC_FA_HACK(sc); 2266 } else { 2267 AAC_SETREG2((sc), AAC_FA_MASK0, ~0); 2268 AAC_FA_HACK(sc); 2269 } 2270 } 2271 2272 /* 2273 * Debugging and Diagnostics 2274 */ 2275 2276 /* 2277 * Print some information about the controller. 2278 */ 2279 static void 2280 aac_describe_controller(struct aac_softc *sc) 2281 { 2282 struct aac_fib *fib; 2283 struct aac_adapter_info *info; 2284 2285 debug_called(2); 2286 2287 aac_alloc_sync_fib(sc, &fib, 0); 2288 2289 fib->data[0] = 0; 2290 if (aac_sync_fib(sc, RequestAdapterInfo, 0, fib, 1)) { 2291 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 2292 aac_release_sync_fib(sc); 2293 return; 2294 } 2295 info = (struct aac_adapter_info *)&fib->data[0]; 2296 2297 device_printf(sc->aac_dev, "%s %dMHz, %dMB cache memory, %s\n", 2298 aac_describe_code(aac_cpu_variant, info->CpuVariant), 2299 info->ClockSpeed, info->BufferMem / (1024 * 1024), 2300 aac_describe_code(aac_battery_platform, 2301 info->batteryPlatform)); 2302 2303 /* save the kernel revision structure for later use */ 2304 sc->aac_revision = info->KernelRevision; 2305 device_printf(sc->aac_dev, "Kernel %d.%d-%d, Build %d, S/N %6X\n", 2306 info->KernelRevision.external.comp.major, 2307 info->KernelRevision.external.comp.minor, 2308 info->KernelRevision.external.comp.dash, 2309 info->KernelRevision.buildNumber, 2310 (u_int32_t)(info->SerialNumber & 0xffffff)); 2311 2312 aac_release_sync_fib(sc); 2313 2314 if (1 || bootverbose) { 2315 device_printf(sc->aac_dev, "Supported Options=%b\n", 2316 sc->supported_options, 2317 "\20" 2318 "\1SNAPSHOT" 2319 "\2CLUSTERS" 2320 "\3WCACHE" 2321 "\4DATA64" 2322 "\5HOSTTIME" 2323 "\6RAID50" 2324 "\7WINDOW4GB" 2325 "\10SCSIUPGD" 2326 "\11SOFTERR" 2327 "\12NORECOND" 2328 "\13SGMAP64" 2329 "\14ALARM" 2330 "\15NONDASD"); 2331 } 2332 } 2333 2334 /* 2335 * Look up a text description of a numeric error code and return a pointer to 2336 * same. 2337 */ 2338 static char * 2339 aac_describe_code(struct aac_code_lookup *table, u_int32_t code) 2340 { 2341 int i; 2342 2343 for (i = 0; table[i].string != NULL; i++) 2344 if (table[i].code == code) 2345 return(table[i].string); 2346 return(table[i + 1].string); 2347 } 2348 2349 /* 2350 * Management Interface 2351 */ 2352 2353 static int 2354 aac_open(dev_t dev, int flags, int fmt, d_thread_t *td) 2355 { 2356 struct aac_softc *sc; 2357 2358 debug_called(2); 2359 2360 sc = dev->si_drv1; 2361 2362 /* Check to make sure the device isn't already open */ 2363 if (sc->aac_state & AAC_STATE_OPEN) { 2364 return EBUSY; 2365 } 2366 sc->aac_state |= AAC_STATE_OPEN; 2367 2368 return 0; 2369 } 2370 2371 static int 2372 aac_close(dev_t dev, int flags, int fmt, d_thread_t *td) 2373 { 2374 struct aac_softc *sc; 2375 2376 debug_called(2); 2377 2378 sc = dev->si_drv1; 2379 2380 /* Mark this unit as no longer open */ 2381 sc->aac_state &= ~AAC_STATE_OPEN; 2382 2383 return 0; 2384 } 2385 2386 static int 2387 aac_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, d_thread_t *td) 2388 { 2389 union aac_statrequest *as; 2390 struct aac_softc *sc; 2391 int error = 0; 2392 uint32_t cookie; 2393 2394 debug_called(2); 2395 2396 as = (union aac_statrequest *)arg; 2397 sc = dev->si_drv1; 2398 2399 switch (cmd) { 2400 case AACIO_STATS: 2401 switch (as->as_item) { 2402 case AACQ_FREE: 2403 case AACQ_BIO: 2404 case AACQ_READY: 2405 case AACQ_BUSY: 2406 bcopy(&sc->aac_qstat[as->as_item], &as->as_qstat, 2407 sizeof(struct aac_qstat)); 2408 break; 2409 default: 2410 error = ENOENT; 2411 break; 2412 } 2413 break; 2414 2415 case FSACTL_SENDFIB: 2416 arg = *(caddr_t*)arg; 2417 case FSACTL_LNX_SENDFIB: 2418 debug(1, "FSACTL_SENDFIB"); 2419 error = aac_ioctl_sendfib(sc, arg); 2420 break; 2421 case FSACTL_AIF_THREAD: 2422 case FSACTL_LNX_AIF_THREAD: 2423 debug(1, "FSACTL_AIF_THREAD"); 2424 error = EINVAL; 2425 break; 2426 case FSACTL_OPEN_GET_ADAPTER_FIB: 2427 arg = *(caddr_t*)arg; 2428 case FSACTL_LNX_OPEN_GET_ADAPTER_FIB: 2429 debug(1, "FSACTL_OPEN_GET_ADAPTER_FIB"); 2430 /* 2431 * Pass the caller out an AdapterFibContext. 2432 * 2433 * Note that because we only support one opener, we 2434 * basically ignore this. Set the caller's context to a magic 2435 * number just in case. 2436 * 2437 * The Linux code hands the driver a pointer into kernel space, 2438 * and then trusts it when the caller hands it back. Aiee! 2439 * Here, we give it the proc pointer of the per-adapter aif 2440 * thread. It's only used as a sanity check in other calls. 2441 */ 2442 cookie = (uint32_t)(uintptr_t)sc->aifthread; 2443 error = copyout(&cookie, arg, sizeof(cookie)); 2444 break; 2445 case FSACTL_GET_NEXT_ADAPTER_FIB: 2446 arg = *(caddr_t*)arg; 2447 case FSACTL_LNX_GET_NEXT_ADAPTER_FIB: 2448 debug(1, "FSACTL_GET_NEXT_ADAPTER_FIB"); 2449 error = aac_getnext_aif(sc, arg); 2450 break; 2451 case FSACTL_CLOSE_GET_ADAPTER_FIB: 2452 case FSACTL_LNX_CLOSE_GET_ADAPTER_FIB: 2453 debug(1, "FSACTL_CLOSE_GET_ADAPTER_FIB"); 2454 /* don't do anything here */ 2455 break; 2456 case FSACTL_MINIPORT_REV_CHECK: 2457 arg = *(caddr_t*)arg; 2458 case FSACTL_LNX_MINIPORT_REV_CHECK: 2459 debug(1, "FSACTL_MINIPORT_REV_CHECK"); 2460 error = aac_rev_check(sc, arg); 2461 break; 2462 case FSACTL_QUERY_DISK: 2463 arg = *(caddr_t*)arg; 2464 case FSACTL_LNX_QUERY_DISK: 2465 debug(1, "FSACTL_QUERY_DISK"); 2466 error = aac_query_disk(sc, arg); 2467 break; 2468 case FSACTL_DELETE_DISK: 2469 case FSACTL_LNX_DELETE_DISK: 2470 /* 2471 * We don't trust the underland to tell us when to delete a 2472 * container, rather we rely on an AIF coming from the 2473 * controller 2474 */ 2475 error = 0; 2476 break; 2477 default: 2478 debug(1, "unsupported cmd 0x%lx\n", cmd); 2479 error = EINVAL; 2480 break; 2481 } 2482 return(error); 2483 } 2484 2485 static int 2486 aac_poll(dev_t dev, int poll_events, d_thread_t *td) 2487 { 2488 struct aac_softc *sc; 2489 int revents; 2490 2491 sc = dev->si_drv1; 2492 revents = 0; 2493 2494 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2495 if ((poll_events & (POLLRDNORM | POLLIN)) != 0) { 2496 if (sc->aac_aifq_tail != sc->aac_aifq_head) 2497 revents |= poll_events & (POLLIN | POLLRDNORM); 2498 } 2499 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2500 2501 if (revents == 0) { 2502 if (poll_events & (POLLIN | POLLRDNORM)) 2503 selrecord(td, &sc->rcv_select); 2504 } 2505 2506 return (revents); 2507 } 2508 2509 /* 2510 * Send a FIB supplied from userspace 2511 */ 2512 static int 2513 aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib) 2514 { 2515 struct aac_command *cm; 2516 int size, error; 2517 2518 debug_called(2); 2519 2520 cm = NULL; 2521 2522 /* 2523 * Get a command 2524 */ 2525 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 2526 if (aac_alloc_command(sc, &cm)) { 2527 error = EBUSY; 2528 goto out; 2529 } 2530 2531 /* 2532 * Fetch the FIB header, then re-copy to get data as well. 2533 */ 2534 if ((error = copyin(ufib, cm->cm_fib, 2535 sizeof(struct aac_fib_header))) != 0) 2536 goto out; 2537 size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header); 2538 if (size > sizeof(struct aac_fib)) { 2539 device_printf(sc->aac_dev, "incoming FIB oversized (%d > %zd)\n", 2540 size, sizeof(struct aac_fib)); 2541 size = sizeof(struct aac_fib); 2542 } 2543 if ((error = copyin(ufib, cm->cm_fib, size)) != 0) 2544 goto out; 2545 cm->cm_fib->Header.Size = size; 2546 cm->cm_timestamp = time_second; 2547 2548 /* 2549 * Pass the FIB to the controller, wait for it to complete. 2550 */ 2551 if ((error = aac_wait_command(cm, 30)) != 0) { /* XXX user timeout? */ 2552 device_printf(sc->aac_dev, 2553 "aac_wait_command return %d\n", error); 2554 goto out; 2555 } 2556 2557 /* 2558 * Copy the FIB and data back out to the caller. 2559 */ 2560 size = cm->cm_fib->Header.Size; 2561 if (size > sizeof(struct aac_fib)) { 2562 device_printf(sc->aac_dev, "outbound FIB oversized (%d > %zd)\n", 2563 size, sizeof(struct aac_fib)); 2564 size = sizeof(struct aac_fib); 2565 } 2566 error = copyout(cm->cm_fib, ufib, size); 2567 2568 out: 2569 if (cm != NULL) { 2570 aac_release_command(cm); 2571 } 2572 2573 AAC_LOCK_RELEASE(&sc->aac_io_lock); 2574 return(error); 2575 } 2576 2577 /* 2578 * Handle an AIF sent to us by the controller; queue it for later reference. 2579 * If the queue fills up, then drop the older entries. 2580 */ 2581 static void 2582 aac_handle_aif(struct aac_softc *sc, struct aac_fib *fib) 2583 { 2584 struct aac_aif_command *aif; 2585 struct aac_container *co, *co_next; 2586 struct aac_mntinfo *mi; 2587 struct aac_mntinforesp *mir = NULL; 2588 u_int16_t rsize; 2589 int next, found; 2590 int count = 0, added = 0, i = 0; 2591 2592 debug_called(2); 2593 2594 aif = (struct aac_aif_command*)&fib->data[0]; 2595 aac_print_aif(sc, aif); 2596 2597 /* Is it an event that we should care about? */ 2598 switch (aif->command) { 2599 case AifCmdEventNotify: 2600 switch (aif->data.EN.type) { 2601 case AifEnAddContainer: 2602 case AifEnDeleteContainer: 2603 /* 2604 * A container was added or deleted, but the message 2605 * doesn't tell us anything else! Re-enumerate the 2606 * containers and sort things out. 2607 */ 2608 aac_alloc_sync_fib(sc, &fib, 0); 2609 mi = (struct aac_mntinfo *)&fib->data[0]; 2610 do { 2611 /* 2612 * Ask the controller for its containers one at 2613 * a time. 2614 * XXX What if the controller's list changes 2615 * midway through this enumaration? 2616 * XXX This should be done async. 2617 */ 2618 bzero(mi, sizeof(struct aac_mntinfo)); 2619 mi->Command = VM_NameServe; 2620 mi->MntType = FT_FILESYS; 2621 mi->MntCount = i; 2622 rsize = sizeof(mir); 2623 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 2624 sizeof(struct aac_mntinfo))) { 2625 printf("Error probing container %d\n", 2626 i); 2627 continue; 2628 } 2629 mir = (struct aac_mntinforesp *)&fib->data[0]; 2630 /* XXX Need to check if count changed */ 2631 count = mir->MntRespCount; 2632 /* 2633 * Check the container against our list. 2634 * co->co_found was already set to 0 in a 2635 * previous run. 2636 */ 2637 if ((mir->Status == ST_OK) && 2638 (mir->MntTable[0].VolType != CT_NONE)) { 2639 found = 0; 2640 TAILQ_FOREACH(co, 2641 &sc->aac_container_tqh, 2642 co_link) { 2643 if (co->co_mntobj.ObjectId == 2644 mir->MntTable[0].ObjectId) { 2645 co->co_found = 1; 2646 found = 1; 2647 break; 2648 } 2649 } 2650 /* 2651 * If the container matched, continue 2652 * in the list. 2653 */ 2654 if (found) { 2655 i++; 2656 continue; 2657 } 2658 2659 /* 2660 * This is a new container. Do all the 2661 * appropriate things to set it up. 2662 */ 2663 aac_add_container(sc, mir, 1); 2664 added = 1; 2665 } 2666 i++; 2667 } while ((i < count) && (i < AAC_MAX_CONTAINERS)); 2668 aac_release_sync_fib(sc); 2669 2670 /* 2671 * Go through our list of containers and see which ones 2672 * were not marked 'found'. Since the controller didn't 2673 * list them they must have been deleted. Do the 2674 * appropriate steps to destroy the device. Also reset 2675 * the co->co_found field. 2676 */ 2677 co = TAILQ_FIRST(&sc->aac_container_tqh); 2678 while (co != NULL) { 2679 if (co->co_found == 0) { 2680 device_delete_child(sc->aac_dev, 2681 co->co_disk); 2682 co_next = TAILQ_NEXT(co, co_link); 2683 AAC_LOCK_ACQUIRE(&sc-> 2684 aac_container_lock); 2685 TAILQ_REMOVE(&sc->aac_container_tqh, co, 2686 co_link); 2687 AAC_LOCK_RELEASE(&sc-> 2688 aac_container_lock); 2689 FREE(co, M_AACBUF); 2690 co = co_next; 2691 } else { 2692 co->co_found = 0; 2693 co = TAILQ_NEXT(co, co_link); 2694 } 2695 } 2696 2697 /* Attach the newly created containers */ 2698 if (added) 2699 bus_generic_attach(sc->aac_dev); 2700 2701 break; 2702 2703 default: 2704 break; 2705 } 2706 2707 default: 2708 break; 2709 } 2710 2711 /* Copy the AIF data to the AIF queue for ioctl retrieval */ 2712 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2713 next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH; 2714 if (next != sc->aac_aifq_tail) { 2715 bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command)); 2716 sc->aac_aifq_head = next; 2717 2718 /* On the off chance that someone is sleeping for an aif... */ 2719 if (sc->aac_state & AAC_STATE_AIF_SLEEPER) 2720 wakeup(sc->aac_aifq); 2721 /* Wakeup any poll()ers */ 2722 selwakeuppri(&sc->rcv_select, PRIBIO); 2723 } 2724 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2725 2726 return; 2727 } 2728 2729 /* 2730 * Return the Revision of the driver to userspace and check to see if the 2731 * userspace app is possibly compatible. This is extremely bogus since 2732 * our driver doesn't follow Adaptec's versioning system. Cheat by just 2733 * returning what the card reported. 2734 */ 2735 static int 2736 aac_rev_check(struct aac_softc *sc, caddr_t udata) 2737 { 2738 struct aac_rev_check rev_check; 2739 struct aac_rev_check_resp rev_check_resp; 2740 int error = 0; 2741 2742 debug_called(2); 2743 2744 /* 2745 * Copyin the revision struct from userspace 2746 */ 2747 if ((error = copyin(udata, (caddr_t)&rev_check, 2748 sizeof(struct aac_rev_check))) != 0) { 2749 return error; 2750 } 2751 2752 debug(2, "Userland revision= %d\n", 2753 rev_check.callingRevision.buildNumber); 2754 2755 /* 2756 * Doctor up the response struct. 2757 */ 2758 rev_check_resp.possiblyCompatible = 1; 2759 rev_check_resp.adapterSWRevision.external.ul = 2760 sc->aac_revision.external.ul; 2761 rev_check_resp.adapterSWRevision.buildNumber = 2762 sc->aac_revision.buildNumber; 2763 2764 return(copyout((caddr_t)&rev_check_resp, udata, 2765 sizeof(struct aac_rev_check_resp))); 2766 } 2767 2768 /* 2769 * Pass the caller the next AIF in their queue 2770 */ 2771 static int 2772 aac_getnext_aif(struct aac_softc *sc, caddr_t arg) 2773 { 2774 struct get_adapter_fib_ioctl agf; 2775 int error; 2776 2777 debug_called(2); 2778 2779 if ((error = copyin(arg, &agf, sizeof(agf))) == 0) { 2780 2781 /* 2782 * Check the magic number that we gave the caller. 2783 */ 2784 if (agf.AdapterFibContext != (int)(uintptr_t)sc->aifthread) { 2785 error = EFAULT; 2786 } else { 2787 error = aac_return_aif(sc, agf.AifFib); 2788 if ((error == EAGAIN) && (agf.Wait)) { 2789 sc->aac_state |= AAC_STATE_AIF_SLEEPER; 2790 while (error == EAGAIN) { 2791 error = tsleep(sc->aac_aifq, PRIBIO | 2792 PCATCH, "aacaif", 0); 2793 if (error == 0) 2794 error = aac_return_aif(sc, 2795 agf.AifFib); 2796 } 2797 sc->aac_state &= ~AAC_STATE_AIF_SLEEPER; 2798 } 2799 } 2800 } 2801 return(error); 2802 } 2803 2804 /* 2805 * Hand the next AIF off the top of the queue out to userspace. 2806 */ 2807 static int 2808 aac_return_aif(struct aac_softc *sc, caddr_t uptr) 2809 { 2810 int next, error; 2811 2812 debug_called(2); 2813 2814 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2815 if (sc->aac_aifq_tail == sc->aac_aifq_head) { 2816 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2817 return (EAGAIN); 2818 } 2819 2820 next = (sc->aac_aifq_tail + 1) % AAC_AIFQ_LENGTH; 2821 error = copyout(&sc->aac_aifq[next], uptr, 2822 sizeof(struct aac_aif_command)); 2823 if (error) 2824 device_printf(sc->aac_dev, 2825 "aac_return_aif: copyout returned %d\n", error); 2826 else 2827 sc->aac_aifq_tail = next; 2828 2829 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2830 return(error); 2831 } 2832 2833 /* 2834 * Give the userland some information about the container. The AAC arch 2835 * expects the driver to be a SCSI passthrough type driver, so it expects 2836 * the containers to have b:t:l numbers. Fake it. 2837 */ 2838 static int 2839 aac_query_disk(struct aac_softc *sc, caddr_t uptr) 2840 { 2841 struct aac_query_disk query_disk; 2842 struct aac_container *co; 2843 struct aac_disk *disk; 2844 int error, id; 2845 2846 debug_called(2); 2847 2848 disk = NULL; 2849 2850 error = copyin(uptr, (caddr_t)&query_disk, 2851 sizeof(struct aac_query_disk)); 2852 if (error) 2853 return (error); 2854 2855 id = query_disk.ContainerNumber; 2856 if (id == -1) 2857 return (EINVAL); 2858 2859 AAC_LOCK_ACQUIRE(&sc->aac_container_lock); 2860 TAILQ_FOREACH(co, &sc->aac_container_tqh, co_link) { 2861 if (co->co_mntobj.ObjectId == id) 2862 break; 2863 } 2864 2865 if (co == NULL) { 2866 query_disk.Valid = 0; 2867 query_disk.Locked = 0; 2868 query_disk.Deleted = 1; /* XXX is this right? */ 2869 } else { 2870 disk = device_get_softc(co->co_disk); 2871 query_disk.Valid = 1; 2872 query_disk.Locked = 2873 (disk->ad_flags & AAC_DISK_OPEN) ? 1 : 0; 2874 query_disk.Deleted = 0; 2875 query_disk.Bus = device_get_unit(sc->aac_dev); 2876 query_disk.Target = disk->unit; 2877 query_disk.Lun = 0; 2878 query_disk.UnMapped = 0; 2879 sprintf(&query_disk.diskDeviceName[0], "%s%d", 2880 disk->ad_disk->d_name, disk->ad_disk->d_unit); 2881 } 2882 AAC_LOCK_RELEASE(&sc->aac_container_lock); 2883 2884 error = copyout((caddr_t)&query_disk, uptr, 2885 sizeof(struct aac_query_disk)); 2886 2887 return (error); 2888 } 2889 2890 static void 2891 aac_get_bus_info(struct aac_softc *sc) 2892 { 2893 struct aac_fib *fib; 2894 struct aac_ctcfg *c_cmd; 2895 struct aac_ctcfg_resp *c_resp; 2896 struct aac_vmioctl *vmi; 2897 struct aac_vmi_businf_resp *vmi_resp; 2898 struct aac_getbusinf businfo; 2899 struct aac_sim *caminf; 2900 device_t child; 2901 int i, found, error; 2902 2903 aac_alloc_sync_fib(sc, &fib, 0); 2904 c_cmd = (struct aac_ctcfg *)&fib->data[0]; 2905 bzero(c_cmd, sizeof(struct aac_ctcfg)); 2906 2907 c_cmd->Command = VM_ContainerConfig; 2908 c_cmd->cmd = CT_GET_SCSI_METHOD; 2909 c_cmd->param = 0; 2910 2911 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2912 sizeof(struct aac_ctcfg)); 2913 if (error) { 2914 device_printf(sc->aac_dev, "Error %d sending " 2915 "VM_ContainerConfig command\n", error); 2916 aac_release_sync_fib(sc); 2917 return; 2918 } 2919 2920 c_resp = (struct aac_ctcfg_resp *)&fib->data[0]; 2921 if (c_resp->Status != ST_OK) { 2922 device_printf(sc->aac_dev, "VM_ContainerConfig returned 0x%x\n", 2923 c_resp->Status); 2924 aac_release_sync_fib(sc); 2925 return; 2926 } 2927 2928 sc->scsi_method_id = c_resp->param; 2929 2930 vmi = (struct aac_vmioctl *)&fib->data[0]; 2931 bzero(vmi, sizeof(struct aac_vmioctl)); 2932 2933 vmi->Command = VM_Ioctl; 2934 vmi->ObjType = FT_DRIVE; 2935 vmi->MethId = sc->scsi_method_id; 2936 vmi->ObjId = 0; 2937 vmi->IoctlCmd = GetBusInfo; 2938 2939 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2940 sizeof(struct aac_vmioctl)); 2941 if (error) { 2942 device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n", 2943 error); 2944 aac_release_sync_fib(sc); 2945 return; 2946 } 2947 2948 vmi_resp = (struct aac_vmi_businf_resp *)&fib->data[0]; 2949 if (vmi_resp->Status != ST_OK) { 2950 device_printf(sc->aac_dev, "VM_Ioctl returned %d\n", 2951 vmi_resp->Status); 2952 aac_release_sync_fib(sc); 2953 return; 2954 } 2955 2956 bcopy(&vmi_resp->BusInf, &businfo, sizeof(struct aac_getbusinf)); 2957 aac_release_sync_fib(sc); 2958 2959 found = 0; 2960 for (i = 0; i < businfo.BusCount; i++) { 2961 if (businfo.BusValid[i] != AAC_BUS_VALID) 2962 continue; 2963 2964 caminf = (struct aac_sim *)malloc( sizeof(struct aac_sim), 2965 M_AACBUF, M_NOWAIT | M_ZERO); 2966 if (caminf == NULL) 2967 continue; 2968 2969 child = device_add_child(sc->aac_dev, "aacp", -1); 2970 if (child == NULL) { 2971 device_printf(sc->aac_dev, "device_add_child failed\n"); 2972 continue; 2973 } 2974 2975 caminf->TargetsPerBus = businfo.TargetsPerBus; 2976 caminf->BusNumber = i; 2977 caminf->InitiatorBusId = businfo.InitiatorBusId[i]; 2978 caminf->aac_sc = sc; 2979 caminf->sim_dev = child; 2980 2981 device_set_ivars(child, caminf); 2982 device_set_desc(child, "SCSI Passthrough Bus"); 2983 TAILQ_INSERT_TAIL(&sc->aac_sim_tqh, caminf, sim_link); 2984 2985 found = 1; 2986 } 2987 2988 if (found) 2989 bus_generic_attach(sc->aac_dev); 2990 2991 return; 2992 } 2993