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 kthread_exit(0); 818 } 819 820 /* 821 * Process completed commands. 822 */ 823 static void 824 aac_complete(void *context, int pending) 825 { 826 struct aac_softc *sc; 827 struct aac_command *cm; 828 struct aac_fib *fib; 829 u_int32_t fib_size; 830 831 debug_called(2); 832 833 sc = (struct aac_softc *)context; 834 835 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 836 837 /* pull completed commands off the queue */ 838 for (;;) { 839 /* look for completed FIBs on our queue */ 840 if (aac_dequeue_fib(sc, AAC_HOST_NORM_RESP_QUEUE, &fib_size, 841 &fib)) 842 break; /* nothing to do */ 843 844 /* get the command, unmap and hand off for processing */ 845 cm = sc->aac_commands + fib->Header.SenderData; 846 if (cm == NULL) { 847 AAC_PRINT_FIB(sc, fib); 848 break; 849 } 850 851 aac_remove_busy(cm); 852 aac_unmap_command(cm); 853 cm->cm_flags |= AAC_CMD_COMPLETED; 854 855 /* is there a completion handler? */ 856 if (cm->cm_complete != NULL) { 857 cm->cm_complete(cm); 858 } else { 859 /* assume that someone is sleeping on this command */ 860 wakeup(cm); 861 } 862 } 863 864 /* see if we can start some more I/O */ 865 sc->flags &= ~AAC_QUEUE_FRZN; 866 aac_startio(sc); 867 868 AAC_LOCK_RELEASE(&sc->aac_io_lock); 869 } 870 871 /* 872 * Handle a bio submitted from a disk device. 873 */ 874 void 875 aac_submit_bio(struct bio *bp) 876 { 877 struct aac_disk *ad; 878 struct aac_softc *sc; 879 880 debug_called(2); 881 882 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 883 sc = ad->ad_controller; 884 885 /* queue the BIO and try to get some work done */ 886 aac_enqueue_bio(sc, bp); 887 aac_startio(sc); 888 } 889 890 /* 891 * Get a bio and build a command to go with it. 892 */ 893 static int 894 aac_bio_command(struct aac_softc *sc, struct aac_command **cmp) 895 { 896 struct aac_command *cm; 897 struct aac_fib *fib; 898 struct aac_disk *ad; 899 struct bio *bp; 900 901 debug_called(2); 902 903 /* get the resources we will need */ 904 cm = NULL; 905 bp = NULL; 906 if (aac_alloc_command(sc, &cm)) /* get a command */ 907 goto fail; 908 if ((bp = aac_dequeue_bio(sc)) == NULL) 909 goto fail; 910 911 /* fill out the command */ 912 cm->cm_data = (void *)bp->bio_data; 913 cm->cm_datalen = bp->bio_bcount; 914 cm->cm_complete = aac_bio_complete; 915 cm->cm_private = bp; 916 cm->cm_timestamp = time_second; 917 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 918 919 /* build the FIB */ 920 fib = cm->cm_fib; 921 fib->Header.Size = sizeof(struct aac_fib_header); 922 fib->Header.XferState = 923 AAC_FIBSTATE_HOSTOWNED | 924 AAC_FIBSTATE_INITIALISED | 925 AAC_FIBSTATE_EMPTY | 926 AAC_FIBSTATE_FROMHOST | 927 AAC_FIBSTATE_REXPECTED | 928 AAC_FIBSTATE_NORM | 929 AAC_FIBSTATE_ASYNC | 930 AAC_FIBSTATE_FAST_RESPONSE; 931 932 /* build the read/write request */ 933 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 934 935 if ((sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 936 fib->Header.Command = ContainerCommand; 937 if (bp->bio_cmd == BIO_READ) { 938 struct aac_blockread *br; 939 br = (struct aac_blockread *)&fib->data[0]; 940 br->Command = VM_CtBlockRead; 941 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 942 br->BlockNumber = bp->bio_pblkno; 943 br->ByteCount = bp->bio_bcount; 944 fib->Header.Size += sizeof(struct aac_blockread); 945 cm->cm_sgtable = &br->SgMap; 946 cm->cm_flags |= AAC_CMD_DATAIN; 947 } else { 948 struct aac_blockwrite *bw; 949 bw = (struct aac_blockwrite *)&fib->data[0]; 950 bw->Command = VM_CtBlockWrite; 951 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 952 bw->BlockNumber = bp->bio_pblkno; 953 bw->ByteCount = bp->bio_bcount; 954 bw->Stable = CUNSTABLE; 955 fib->Header.Size += sizeof(struct aac_blockwrite); 956 cm->cm_flags |= AAC_CMD_DATAOUT; 957 cm->cm_sgtable = &bw->SgMap; 958 } 959 } else { 960 fib->Header.Command = ContainerCommand64; 961 if (bp->bio_cmd == BIO_READ) { 962 struct aac_blockread64 *br; 963 br = (struct aac_blockread64 *)&fib->data[0]; 964 br->Command = VM_CtHostRead64; 965 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 966 br->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 967 br->BlockNumber = bp->bio_pblkno; 968 br->Pad = 0; 969 br->Flags = 0; 970 fib->Header.Size += sizeof(struct aac_blockread64); 971 cm->cm_flags |= AAC_CMD_DATAOUT; 972 (struct aac_sg_table64 *)cm->cm_sgtable = &br->SgMap64; 973 } else { 974 struct aac_blockwrite64 *bw; 975 bw = (struct aac_blockwrite64 *)&fib->data[0]; 976 bw->Command = VM_CtHostWrite64; 977 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 978 bw->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 979 bw->BlockNumber = bp->bio_pblkno; 980 bw->Pad = 0; 981 bw->Flags = 0; 982 fib->Header.Size += sizeof(struct aac_blockwrite64); 983 cm->cm_flags |= AAC_CMD_DATAIN; 984 (struct aac_sg_table64 *)cm->cm_sgtable = &bw->SgMap64; 985 } 986 } 987 988 *cmp = cm; 989 return(0); 990 991 fail: 992 if (bp != NULL) 993 aac_enqueue_bio(sc, bp); 994 if (cm != NULL) 995 aac_release_command(cm); 996 return(ENOMEM); 997 } 998 999 /* 1000 * Handle a bio-instigated command that has been completed. 1001 */ 1002 static void 1003 aac_bio_complete(struct aac_command *cm) 1004 { 1005 struct aac_blockread_response *brr; 1006 struct aac_blockwrite_response *bwr; 1007 struct bio *bp; 1008 AAC_FSAStatus status; 1009 1010 /* fetch relevant status and then release the command */ 1011 bp = (struct bio *)cm->cm_private; 1012 if (bp->bio_cmd == BIO_READ) { 1013 brr = (struct aac_blockread_response *)&cm->cm_fib->data[0]; 1014 status = brr->Status; 1015 } else { 1016 bwr = (struct aac_blockwrite_response *)&cm->cm_fib->data[0]; 1017 status = bwr->Status; 1018 } 1019 aac_release_command(cm); 1020 1021 /* fix up the bio based on status */ 1022 if (status == ST_OK) { 1023 bp->bio_resid = 0; 1024 } else { 1025 bp->bio_error = EIO; 1026 bp->bio_flags |= BIO_ERROR; 1027 /* pass an error string out to the disk layer */ 1028 bp->bio_driver1 = aac_describe_code(aac_command_status_table, 1029 status); 1030 } 1031 aac_biodone(bp); 1032 } 1033 1034 /* 1035 * Submit a command to the controller, return when it completes. 1036 * XXX This is very dangerous! If the card has gone out to lunch, we could 1037 * be stuck here forever. At the same time, signals are not caught 1038 * because there is a risk that a signal could wakeup the tsleep before 1039 * the card has a chance to complete the command. The passed in timeout 1040 * is ignored for the same reason. Since there is no way to cancel a 1041 * command in progress, we should probably create a 'dead' queue where 1042 * commands go that have been interrupted/timed-out/etc, that keeps them 1043 * out of the free pool. That way, if the card is just slow, it won't 1044 * spam the memory of a command that has been recycled. 1045 */ 1046 static int 1047 aac_wait_command(struct aac_command *cm, int timeout) 1048 { 1049 struct aac_softc *sc; 1050 int error = 0; 1051 1052 debug_called(2); 1053 1054 sc = cm->cm_sc; 1055 1056 /* Put the command on the ready queue and get things going */ 1057 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 1058 aac_enqueue_ready(cm); 1059 aac_startio(sc); 1060 while (!(cm->cm_flags & AAC_CMD_COMPLETED) && (error != EWOULDBLOCK)) { 1061 error = msleep(cm, &sc->aac_io_lock, PRIBIO, "aacwait", 0); 1062 } 1063 return(error); 1064 } 1065 1066 /* 1067 *Command Buffer Management 1068 */ 1069 1070 /* 1071 * Allocate a command. 1072 */ 1073 int 1074 aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp) 1075 { 1076 struct aac_command *cm; 1077 1078 debug_called(3); 1079 1080 if ((cm = aac_dequeue_free(sc)) == NULL) { 1081 if (sc->total_fibs < sc->aac_max_fibs) { 1082 sc->aifflags |= AAC_AIFFLAGS_ALLOCFIBS; 1083 wakeup(sc->aifthread); 1084 } 1085 return (EBUSY); 1086 } 1087 1088 *cmp = cm; 1089 return(0); 1090 } 1091 1092 /* 1093 * Release a command back to the freelist. 1094 */ 1095 void 1096 aac_release_command(struct aac_command *cm) 1097 { 1098 debug_called(3); 1099 1100 /* (re)initialise the command/FIB */ 1101 cm->cm_sgtable = NULL; 1102 cm->cm_flags = 0; 1103 cm->cm_complete = NULL; 1104 cm->cm_private = NULL; 1105 cm->cm_fib->Header.XferState = AAC_FIBSTATE_EMPTY; 1106 cm->cm_fib->Header.StructType = AAC_FIBTYPE_TFIB; 1107 cm->cm_fib->Header.Flags = 0; 1108 cm->cm_fib->Header.SenderSize = sizeof(struct aac_fib); 1109 1110 /* 1111 * These are duplicated in aac_start to cover the case where an 1112 * intermediate stage may have destroyed them. They're left 1113 * initialised here for debugging purposes only. 1114 */ 1115 cm->cm_fib->Header.ReceiverFibAddress = (u_int32_t)cm->cm_fibphys; 1116 cm->cm_fib->Header.SenderData = 0; 1117 1118 aac_enqueue_free(cm); 1119 } 1120 1121 /* 1122 * Map helper for command/FIB allocation. 1123 */ 1124 static void 1125 aac_map_command_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1126 { 1127 uint32_t *fibphys; 1128 1129 fibphys = (uint32_t *)arg; 1130 1131 debug_called(3); 1132 1133 *fibphys = segs[0].ds_addr; 1134 } 1135 1136 /* 1137 * Allocate and initialise commands/FIBs for this adapter. 1138 */ 1139 static int 1140 aac_alloc_commands(struct aac_softc *sc) 1141 { 1142 struct aac_command *cm; 1143 struct aac_fibmap *fm; 1144 uint32_t fibphys; 1145 int i, error; 1146 1147 debug_called(2); 1148 1149 if (sc->total_fibs + AAC_FIB_COUNT > sc->aac_max_fibs) 1150 return (ENOMEM); 1151 1152 fm = malloc(sizeof(struct aac_fibmap), M_AACBUF, M_NOWAIT|M_ZERO); 1153 if (fm == NULL) 1154 return (ENOMEM); 1155 1156 /* allocate the FIBs in DMAable memory and load them */ 1157 if (bus_dmamem_alloc(sc->aac_fib_dmat, (void **)&fm->aac_fibs, 1158 BUS_DMA_NOWAIT, &fm->aac_fibmap)) { 1159 device_printf(sc->aac_dev, 1160 "Not enough contiguous memory available.\n"); 1161 free(fm, M_AACBUF); 1162 return (ENOMEM); 1163 } 1164 1165 /* Ignore errors since this doesn't bounce */ 1166 (void)bus_dmamap_load(sc->aac_fib_dmat, fm->aac_fibmap, fm->aac_fibs, 1167 AAC_FIB_COUNT * sizeof(struct aac_fib), 1168 aac_map_command_helper, &fibphys, 0); 1169 1170 /* initialise constant fields in the command structure */ 1171 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 1172 bzero(fm->aac_fibs, AAC_FIB_COUNT * sizeof(struct aac_fib)); 1173 for (i = 0; i < AAC_FIB_COUNT; i++) { 1174 cm = sc->aac_commands + sc->total_fibs; 1175 fm->aac_commands = cm; 1176 cm->cm_sc = sc; 1177 cm->cm_fib = fm->aac_fibs + i; 1178 cm->cm_fibphys = fibphys + (i * sizeof(struct aac_fib)); 1179 cm->cm_index = sc->total_fibs; 1180 1181 if ((error = bus_dmamap_create(sc->aac_buffer_dmat, 0, 1182 &cm->cm_datamap)) == 0) 1183 aac_release_command(cm); 1184 else 1185 break; 1186 sc->total_fibs++; 1187 } 1188 1189 if (i > 0) { 1190 TAILQ_INSERT_TAIL(&sc->aac_fibmap_tqh, fm, fm_link); 1191 debug(1, "total_fibs= %d\n", sc->total_fibs); 1192 AAC_LOCK_RELEASE(&sc->aac_io_lock); 1193 return (0); 1194 } 1195 1196 AAC_LOCK_RELEASE(&sc->aac_io_lock); 1197 bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap); 1198 bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap); 1199 free(fm, M_AACBUF); 1200 return (ENOMEM); 1201 } 1202 1203 /* 1204 * Free FIBs owned by this adapter. 1205 */ 1206 static void 1207 aac_free_commands(struct aac_softc *sc) 1208 { 1209 struct aac_fibmap *fm; 1210 struct aac_command *cm; 1211 int i; 1212 1213 debug_called(1); 1214 1215 while ((fm = TAILQ_FIRST(&sc->aac_fibmap_tqh)) != NULL) { 1216 1217 TAILQ_REMOVE(&sc->aac_fibmap_tqh, fm, fm_link); 1218 /* 1219 * We check against total_fibs to handle partially 1220 * allocated blocks. 1221 */ 1222 for (i = 0; i < AAC_FIB_COUNT && sc->total_fibs--; i++) { 1223 cm = fm->aac_commands + i; 1224 bus_dmamap_destroy(sc->aac_buffer_dmat, cm->cm_datamap); 1225 } 1226 bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap); 1227 bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap); 1228 free(fm, M_AACBUF); 1229 } 1230 } 1231 1232 /* 1233 * Command-mapping helper function - populate this command's s/g table. 1234 */ 1235 static void 1236 aac_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1237 { 1238 struct aac_softc *sc; 1239 struct aac_command *cm; 1240 struct aac_fib *fib; 1241 int i; 1242 1243 debug_called(3); 1244 1245 cm = (struct aac_command *)arg; 1246 sc = cm->cm_sc; 1247 fib = cm->cm_fib; 1248 1249 /* copy into the FIB */ 1250 if (cm->cm_sgtable != NULL) { 1251 if ((cm->cm_sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 1252 struct aac_sg_table *sg; 1253 sg = cm->cm_sgtable; 1254 sg->SgCount = nseg; 1255 for (i = 0; i < nseg; i++) { 1256 sg->SgEntry[i].SgAddress = segs[i].ds_addr; 1257 sg->SgEntry[i].SgByteCount = segs[i].ds_len; 1258 } 1259 /* update the FIB size for the s/g count */ 1260 fib->Header.Size += nseg * sizeof(struct aac_sg_entry); 1261 } else { 1262 struct aac_sg_table64 *sg; 1263 sg = (struct aac_sg_table64 *)cm->cm_sgtable; 1264 sg->SgCount = nseg; 1265 for (i = 0; i < nseg; i++) { 1266 sg->SgEntry64[i].SgAddress = segs[i].ds_addr; 1267 sg->SgEntry64[i].SgByteCount = segs[i].ds_len; 1268 } 1269 /* update the FIB size for the s/g count */ 1270 fib->Header.Size += nseg*sizeof(struct aac_sg_entry64); 1271 } 1272 } 1273 1274 /* Fix up the address values in the FIB. Use the command array index 1275 * instead of a pointer since these fields are only 32 bits. Shift 1276 * the SenderFibAddress over to make room for the fast response bit. 1277 */ 1278 cm->cm_fib->Header.SenderFibAddress = (cm->cm_index << 1); 1279 cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys; 1280 1281 /* save a pointer to the command for speedy reverse-lookup */ 1282 cm->cm_fib->Header.SenderData = cm->cm_index; 1283 1284 if (cm->cm_flags & AAC_CMD_DATAIN) 1285 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1286 BUS_DMASYNC_PREREAD); 1287 if (cm->cm_flags & AAC_CMD_DATAOUT) 1288 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1289 BUS_DMASYNC_PREWRITE); 1290 cm->cm_flags |= AAC_CMD_MAPPED; 1291 1292 /* put the FIB on the outbound queue */ 1293 if (aac_enqueue_fib(sc, cm->cm_queue, cm) == EBUSY) { 1294 aac_unmap_command(cm); 1295 aac_requeue_ready(cm); 1296 } 1297 1298 return; 1299 } 1300 1301 /* 1302 * Unmap a command from controller-visible space. 1303 */ 1304 static void 1305 aac_unmap_command(struct aac_command *cm) 1306 { 1307 struct aac_softc *sc; 1308 1309 debug_called(2); 1310 1311 sc = cm->cm_sc; 1312 1313 if (!(cm->cm_flags & AAC_CMD_MAPPED)) 1314 return; 1315 1316 if (cm->cm_datalen != 0) { 1317 if (cm->cm_flags & AAC_CMD_DATAIN) 1318 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1319 BUS_DMASYNC_POSTREAD); 1320 if (cm->cm_flags & AAC_CMD_DATAOUT) 1321 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1322 BUS_DMASYNC_POSTWRITE); 1323 1324 bus_dmamap_unload(sc->aac_buffer_dmat, cm->cm_datamap); 1325 } 1326 cm->cm_flags &= ~AAC_CMD_MAPPED; 1327 } 1328 1329 /* 1330 * Hardware Interface 1331 */ 1332 1333 /* 1334 * Initialise the adapter. 1335 */ 1336 static void 1337 aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1338 { 1339 struct aac_softc *sc; 1340 1341 debug_called(1); 1342 1343 sc = (struct aac_softc *)arg; 1344 1345 sc->aac_common_busaddr = segs[0].ds_addr; 1346 } 1347 1348 static int 1349 aac_check_firmware(struct aac_softc *sc) 1350 { 1351 u_int32_t major, minor, options; 1352 1353 debug_called(1); 1354 1355 /* 1356 * Retrieve the firmware version numbers. Dell PERC2/QC cards with 1357 * firmware version 1.x are not compatible with this driver. 1358 */ 1359 if (sc->flags & AAC_FLAGS_PERC2QC) { 1360 if (aac_sync_command(sc, AAC_MONKER_GETKERNVER, 0, 0, 0, 0, 1361 NULL)) { 1362 device_printf(sc->aac_dev, 1363 "Error reading firmware version\n"); 1364 return (EIO); 1365 } 1366 1367 /* These numbers are stored as ASCII! */ 1368 major = (AAC_GET_MAILBOX(sc, 1) & 0xff) - 0x30; 1369 minor = (AAC_GET_MAILBOX(sc, 2) & 0xff) - 0x30; 1370 if (major == 1) { 1371 device_printf(sc->aac_dev, 1372 "Firmware version %d.%d is not supported.\n", 1373 major, minor); 1374 return (EINVAL); 1375 } 1376 } 1377 1378 /* 1379 * Retrieve the capabilities/supported options word so we know what 1380 * work-arounds to enable. 1381 */ 1382 if (aac_sync_command(sc, AAC_MONKER_GETINFO, 0, 0, 0, 0, NULL)) { 1383 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 1384 return (EIO); 1385 } 1386 options = AAC_GET_MAILBOX(sc, 1); 1387 sc->supported_options = options; 1388 1389 if ((options & AAC_SUPPORTED_4GB_WINDOW) != 0 && 1390 (sc->flags & AAC_FLAGS_NO4GB) == 0) 1391 sc->flags |= AAC_FLAGS_4GB_WINDOW; 1392 if (options & AAC_SUPPORTED_NONDASD) 1393 sc->flags |= AAC_FLAGS_ENABLE_CAM; 1394 if ((options & AAC_SUPPORTED_SGMAP_HOST64) != 0 1395 && (sizeof(bus_addr_t) > 4)) { 1396 device_printf(sc->aac_dev, "Enabling 64-bit address support\n"); 1397 sc->flags |= AAC_FLAGS_SG_64BIT; 1398 } 1399 1400 /* Check for broken hardware that does a lower number of commands */ 1401 if ((sc->flags & AAC_FLAGS_256FIBS) == 0) 1402 sc->aac_max_fibs = AAC_MAX_FIBS; 1403 else 1404 sc->aac_max_fibs = 256; 1405 1406 return (0); 1407 } 1408 1409 static int 1410 aac_init(struct aac_softc *sc) 1411 { 1412 struct aac_adapter_init *ip; 1413 time_t then; 1414 u_int32_t code, qoffset; 1415 int error; 1416 1417 debug_called(1); 1418 1419 /* 1420 * First wait for the adapter to come ready. 1421 */ 1422 then = time_second; 1423 do { 1424 code = AAC_GET_FWSTATUS(sc); 1425 if (code & AAC_SELF_TEST_FAILED) { 1426 device_printf(sc->aac_dev, "FATAL: selftest failed\n"); 1427 return(ENXIO); 1428 } 1429 if (code & AAC_KERNEL_PANIC) { 1430 device_printf(sc->aac_dev, 1431 "FATAL: controller kernel panic\n"); 1432 return(ENXIO); 1433 } 1434 if (time_second > (then + AAC_BOOT_TIMEOUT)) { 1435 device_printf(sc->aac_dev, 1436 "FATAL: controller not coming ready, " 1437 "status %x\n", code); 1438 return(ENXIO); 1439 } 1440 } while (!(code & AAC_UP_AND_RUNNING)); 1441 1442 error = ENOMEM; 1443 /* 1444 * Create DMA tag for mapping buffers into controller-addressable space. 1445 */ 1446 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1447 1, 0, /* algnmnt, boundary */ 1448 (sc->flags & AAC_FLAGS_SG_64BIT) ? 1449 BUS_SPACE_MAXADDR : 1450 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 1451 BUS_SPACE_MAXADDR, /* highaddr */ 1452 NULL, NULL, /* filter, filterarg */ 1453 MAXBSIZE, /* maxsize */ 1454 AAC_MAXSGENTRIES, /* nsegments */ 1455 MAXBSIZE, /* maxsegsize */ 1456 BUS_DMA_ALLOCNOW, /* flags */ 1457 busdma_lock_mutex, /* lockfunc */ 1458 &sc->aac_io_lock, /* lockfuncarg */ 1459 &sc->aac_buffer_dmat)) { 1460 device_printf(sc->aac_dev, "can't allocate buffer DMA tag\n"); 1461 goto out; 1462 } 1463 1464 /* 1465 * Create DMA tag for mapping FIBs into controller-addressable space.. 1466 */ 1467 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1468 1, 0, /* algnmnt, boundary */ 1469 (sc->flags & AAC_FLAGS_4GB_WINDOW) ? 1470 BUS_SPACE_MAXADDR_32BIT : 1471 0x7fffffff, /* lowaddr */ 1472 BUS_SPACE_MAXADDR, /* highaddr */ 1473 NULL, NULL, /* filter, filterarg */ 1474 AAC_FIB_COUNT * 1475 sizeof(struct aac_fib), /* maxsize */ 1476 1, /* nsegments */ 1477 AAC_FIB_COUNT * 1478 sizeof(struct aac_fib), /* maxsegsize */ 1479 BUS_DMA_ALLOCNOW, /* flags */ 1480 NULL, NULL, /* No locking needed */ 1481 &sc->aac_fib_dmat)) { 1482 device_printf(sc->aac_dev, "can't allocate FIB DMA tag\n");; 1483 goto out; 1484 } 1485 1486 /* 1487 * Create DMA tag for the common structure and allocate it. 1488 */ 1489 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1490 1, 0, /* algnmnt, boundary */ 1491 (sc->flags & AAC_FLAGS_4GB_WINDOW) ? 1492 BUS_SPACE_MAXADDR_32BIT : 1493 0x7fffffff, /* lowaddr */ 1494 BUS_SPACE_MAXADDR, /* highaddr */ 1495 NULL, NULL, /* filter, filterarg */ 1496 8192 + sizeof(struct aac_common), /* maxsize */ 1497 1, /* nsegments */ 1498 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 1499 BUS_DMA_ALLOCNOW, /* flags */ 1500 NULL, NULL, /* No locking needed */ 1501 &sc->aac_common_dmat)) { 1502 device_printf(sc->aac_dev, 1503 "can't allocate common structure DMA tag\n"); 1504 goto out; 1505 } 1506 if (bus_dmamem_alloc(sc->aac_common_dmat, (void **)&sc->aac_common, 1507 BUS_DMA_NOWAIT, &sc->aac_common_dmamap)) { 1508 device_printf(sc->aac_dev, "can't allocate common structure\n"); 1509 goto out; 1510 } 1511 1512 /* 1513 * Work around a bug in the 2120 and 2200 that cannot DMA commands 1514 * below address 8192 in physical memory. 1515 * XXX If the padding is not needed, can it be put to use instead 1516 * of ignored? 1517 */ 1518 (void)bus_dmamap_load(sc->aac_common_dmat, sc->aac_common_dmamap, 1519 sc->aac_common, 8192 + sizeof(*sc->aac_common), 1520 aac_common_map, sc, 0); 1521 1522 if (sc->aac_common_busaddr < 8192) { 1523 (uint8_t *)sc->aac_common += 8192; 1524 sc->aac_common_busaddr += 8192; 1525 } 1526 bzero(sc->aac_common, sizeof(*sc->aac_common)); 1527 1528 /* Allocate some FIBs and associated command structs */ 1529 TAILQ_INIT(&sc->aac_fibmap_tqh); 1530 sc->aac_commands = malloc(AAC_MAX_FIBS * sizeof(struct aac_command), 1531 M_AACBUF, M_WAITOK|M_ZERO); 1532 while (sc->total_fibs < AAC_PREALLOCATE_FIBS) { 1533 if (aac_alloc_commands(sc) != 0) 1534 break; 1535 } 1536 if (sc->total_fibs == 0) 1537 goto out; 1538 1539 /* 1540 * Fill in the init structure. This tells the adapter about the 1541 * physical location of various important shared data structures. 1542 */ 1543 ip = &sc->aac_common->ac_init; 1544 ip->InitStructRevision = AAC_INIT_STRUCT_REVISION; 1545 ip->MiniPortRevision = AAC_INIT_STRUCT_MINIPORT_REVISION; 1546 1547 ip->AdapterFibsPhysicalAddress = sc->aac_common_busaddr + 1548 offsetof(struct aac_common, ac_fibs); 1549 ip->AdapterFibsVirtualAddress = 0; 1550 ip->AdapterFibsSize = AAC_ADAPTER_FIBS * sizeof(struct aac_fib); 1551 ip->AdapterFibAlign = sizeof(struct aac_fib); 1552 1553 ip->PrintfBufferAddress = sc->aac_common_busaddr + 1554 offsetof(struct aac_common, ac_printf); 1555 ip->PrintfBufferSize = AAC_PRINTF_BUFSIZE; 1556 1557 /* 1558 * The adapter assumes that pages are 4K in size, except on some 1559 * broken firmware versions that do the page->byte conversion twice, 1560 * therefore 'assuming' that this value is in 16MB units (2^24). 1561 * Round up since the granularity is so high. 1562 */ 1563 ip->HostPhysMemPages = ctob(physmem) / AAC_PAGE_SIZE; 1564 if (sc->flags & AAC_FLAGS_BROKEN_MEMMAP) { 1565 ip->HostPhysMemPages = 1566 (ip->HostPhysMemPages + AAC_PAGE_SIZE) / AAC_PAGE_SIZE; 1567 } 1568 ip->HostElapsedSeconds = time_second; /* reset later if invalid */ 1569 1570 /* 1571 * Initialise FIB queues. Note that it appears that the layout of the 1572 * indexes and the segmentation of the entries may be mandated by the 1573 * adapter, which is only told about the base of the queue index fields. 1574 * 1575 * The initial values of the indices are assumed to inform the adapter 1576 * of the sizes of the respective queues, and theoretically it could 1577 * work out the entire layout of the queue structures from this. We 1578 * take the easy route and just lay this area out like everyone else 1579 * does. 1580 * 1581 * The Linux driver uses a much more complex scheme whereby several 1582 * header records are kept for each queue. We use a couple of generic 1583 * list manipulation functions which 'know' the size of each list by 1584 * virtue of a table. 1585 */ 1586 qoffset = offsetof(struct aac_common, ac_qbuf) + AAC_QUEUE_ALIGN; 1587 qoffset &= ~(AAC_QUEUE_ALIGN - 1); 1588 sc->aac_queues = 1589 (struct aac_queue_table *)((uintptr_t)sc->aac_common + qoffset); 1590 ip->CommHeaderAddress = sc->aac_common_busaddr + qoffset; 1591 1592 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1593 AAC_HOST_NORM_CMD_ENTRIES; 1594 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1595 AAC_HOST_NORM_CMD_ENTRIES; 1596 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1597 AAC_HOST_HIGH_CMD_ENTRIES; 1598 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1599 AAC_HOST_HIGH_CMD_ENTRIES; 1600 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1601 AAC_ADAP_NORM_CMD_ENTRIES; 1602 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1603 AAC_ADAP_NORM_CMD_ENTRIES; 1604 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1605 AAC_ADAP_HIGH_CMD_ENTRIES; 1606 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1607 AAC_ADAP_HIGH_CMD_ENTRIES; 1608 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1609 AAC_HOST_NORM_RESP_ENTRIES; 1610 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1611 AAC_HOST_NORM_RESP_ENTRIES; 1612 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1613 AAC_HOST_HIGH_RESP_ENTRIES; 1614 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1615 AAC_HOST_HIGH_RESP_ENTRIES; 1616 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1617 AAC_ADAP_NORM_RESP_ENTRIES; 1618 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1619 AAC_ADAP_NORM_RESP_ENTRIES; 1620 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1621 AAC_ADAP_HIGH_RESP_ENTRIES; 1622 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1623 AAC_ADAP_HIGH_RESP_ENTRIES; 1624 sc->aac_qentries[AAC_HOST_NORM_CMD_QUEUE] = 1625 &sc->aac_queues->qt_HostNormCmdQueue[0]; 1626 sc->aac_qentries[AAC_HOST_HIGH_CMD_QUEUE] = 1627 &sc->aac_queues->qt_HostHighCmdQueue[0]; 1628 sc->aac_qentries[AAC_ADAP_NORM_CMD_QUEUE] = 1629 &sc->aac_queues->qt_AdapNormCmdQueue[0]; 1630 sc->aac_qentries[AAC_ADAP_HIGH_CMD_QUEUE] = 1631 &sc->aac_queues->qt_AdapHighCmdQueue[0]; 1632 sc->aac_qentries[AAC_HOST_NORM_RESP_QUEUE] = 1633 &sc->aac_queues->qt_HostNormRespQueue[0]; 1634 sc->aac_qentries[AAC_HOST_HIGH_RESP_QUEUE] = 1635 &sc->aac_queues->qt_HostHighRespQueue[0]; 1636 sc->aac_qentries[AAC_ADAP_NORM_RESP_QUEUE] = 1637 &sc->aac_queues->qt_AdapNormRespQueue[0]; 1638 sc->aac_qentries[AAC_ADAP_HIGH_RESP_QUEUE] = 1639 &sc->aac_queues->qt_AdapHighRespQueue[0]; 1640 1641 /* 1642 * Do controller-type-specific initialisation 1643 */ 1644 switch (sc->aac_hwif) { 1645 case AAC_HWIF_I960RX: 1646 AAC_SETREG4(sc, AAC_RX_ODBR, ~0); 1647 break; 1648 } 1649 1650 /* 1651 * Give the init structure to the controller. 1652 */ 1653 if (aac_sync_command(sc, AAC_MONKER_INITSTRUCT, 1654 sc->aac_common_busaddr + 1655 offsetof(struct aac_common, ac_init), 0, 0, 0, 1656 NULL)) { 1657 device_printf(sc->aac_dev, 1658 "error establishing init structure\n"); 1659 error = EIO; 1660 goto out; 1661 } 1662 1663 error = 0; 1664 out: 1665 return(error); 1666 } 1667 1668 /* 1669 * Send a synchronous command to the controller and wait for a result. 1670 */ 1671 static int 1672 aac_sync_command(struct aac_softc *sc, u_int32_t command, 1673 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3, 1674 u_int32_t *sp) 1675 { 1676 time_t then; 1677 u_int32_t status; 1678 1679 debug_called(3); 1680 1681 /* populate the mailbox */ 1682 AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3); 1683 1684 /* ensure the sync command doorbell flag is cleared */ 1685 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1686 1687 /* then set it to signal the adapter */ 1688 AAC_QNOTIFY(sc, AAC_DB_SYNC_COMMAND); 1689 1690 /* spin waiting for the command to complete */ 1691 then = time_second; 1692 do { 1693 if (time_second > (then + AAC_IMMEDIATE_TIMEOUT)) { 1694 debug(1, "timed out"); 1695 return(EIO); 1696 } 1697 } while (!(AAC_GET_ISTATUS(sc) & AAC_DB_SYNC_COMMAND)); 1698 1699 /* clear the completion flag */ 1700 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1701 1702 /* get the command status */ 1703 status = AAC_GET_MAILBOX(sc, 0); 1704 if (sp != NULL) 1705 *sp = status; 1706 return(0); 1707 } 1708 1709 /* 1710 * Grab the sync fib area. 1711 */ 1712 int 1713 aac_alloc_sync_fib(struct aac_softc *sc, struct aac_fib **fib, int flags) 1714 { 1715 1716 /* 1717 * If the force flag is set, the system is shutting down, or in 1718 * trouble. Ignore the mutex. 1719 */ 1720 if (!(flags & AAC_SYNC_LOCK_FORCE)) 1721 AAC_LOCK_ACQUIRE(&sc->aac_sync_lock); 1722 1723 *fib = &sc->aac_common->ac_sync_fib; 1724 1725 return (1); 1726 } 1727 1728 /* 1729 * Release the sync fib area. 1730 */ 1731 void 1732 aac_release_sync_fib(struct aac_softc *sc) 1733 { 1734 1735 AAC_LOCK_RELEASE(&sc->aac_sync_lock); 1736 } 1737 1738 /* 1739 * Send a synchronous FIB to the controller and wait for a result. 1740 */ 1741 int 1742 aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate, 1743 struct aac_fib *fib, u_int16_t datasize) 1744 { 1745 debug_called(3); 1746 1747 if (datasize > AAC_FIB_DATASIZE) 1748 return(EINVAL); 1749 1750 /* 1751 * Set up the sync FIB 1752 */ 1753 fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED | 1754 AAC_FIBSTATE_INITIALISED | 1755 AAC_FIBSTATE_EMPTY; 1756 fib->Header.XferState |= xferstate; 1757 fib->Header.Command = command; 1758 fib->Header.StructType = AAC_FIBTYPE_TFIB; 1759 fib->Header.Size = sizeof(struct aac_fib) + datasize; 1760 fib->Header.SenderSize = sizeof(struct aac_fib); 1761 fib->Header.SenderFibAddress = 0; /* Not needed */ 1762 fib->Header.ReceiverFibAddress = sc->aac_common_busaddr + 1763 offsetof(struct aac_common, 1764 ac_sync_fib); 1765 1766 /* 1767 * Give the FIB to the controller, wait for a response. 1768 */ 1769 if (aac_sync_command(sc, AAC_MONKER_SYNCFIB, 1770 fib->Header.ReceiverFibAddress, 0, 0, 0, NULL)) { 1771 debug(2, "IO error"); 1772 return(EIO); 1773 } 1774 1775 return (0); 1776 } 1777 1778 /* 1779 * Adapter-space FIB queue manipulation 1780 * 1781 * Note that the queue implementation here is a little funky; neither the PI or 1782 * CI will ever be zero. This behaviour is a controller feature. 1783 */ 1784 static struct { 1785 int size; 1786 int notify; 1787 } aac_qinfo[] = { 1788 {AAC_HOST_NORM_CMD_ENTRIES, AAC_DB_COMMAND_NOT_FULL}, 1789 {AAC_HOST_HIGH_CMD_ENTRIES, 0}, 1790 {AAC_ADAP_NORM_CMD_ENTRIES, AAC_DB_COMMAND_READY}, 1791 {AAC_ADAP_HIGH_CMD_ENTRIES, 0}, 1792 {AAC_HOST_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_NOT_FULL}, 1793 {AAC_HOST_HIGH_RESP_ENTRIES, 0}, 1794 {AAC_ADAP_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_READY}, 1795 {AAC_ADAP_HIGH_RESP_ENTRIES, 0} 1796 }; 1797 1798 /* 1799 * Atomically insert an entry into the nominated queue, returns 0 on success or 1800 * EBUSY if the queue is full. 1801 * 1802 * Note: it would be more efficient to defer notifying the controller in 1803 * the case where we may be inserting several entries in rapid succession, 1804 * but implementing this usefully may be difficult (it would involve a 1805 * separate queue/notify interface). 1806 */ 1807 static int 1808 aac_enqueue_fib(struct aac_softc *sc, int queue, struct aac_command *cm) 1809 { 1810 u_int32_t pi, ci; 1811 int error; 1812 u_int32_t fib_size; 1813 u_int32_t fib_addr; 1814 1815 debug_called(3); 1816 1817 fib_size = cm->cm_fib->Header.Size; 1818 fib_addr = cm->cm_fib->Header.ReceiverFibAddress; 1819 1820 /* get the producer/consumer indices */ 1821 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1822 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1823 1824 /* wrap the queue? */ 1825 if (pi >= aac_qinfo[queue].size) 1826 pi = 0; 1827 1828 /* check for queue full */ 1829 if ((pi + 1) == ci) { 1830 error = EBUSY; 1831 goto out; 1832 } 1833 1834 /* populate queue entry */ 1835 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1836 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1837 1838 /* update producer index */ 1839 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1840 1841 /* 1842 * To avoid a race with its completion interrupt, place this command on 1843 * the busy queue prior to advertising it to the controller. 1844 */ 1845 aac_enqueue_busy(cm); 1846 1847 /* notify the adapter if we know how */ 1848 if (aac_qinfo[queue].notify != 0) 1849 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1850 1851 error = 0; 1852 1853 out: 1854 return(error); 1855 } 1856 1857 /* 1858 * Atomically remove one entry from the nominated queue, returns 0 on 1859 * success or ENOENT if the queue is empty. 1860 */ 1861 static int 1862 aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size, 1863 struct aac_fib **fib_addr) 1864 { 1865 u_int32_t pi, ci; 1866 u_int32_t fib_index; 1867 int error; 1868 int notify; 1869 1870 debug_called(3); 1871 1872 /* get the producer/consumer indices */ 1873 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1874 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1875 1876 /* check for queue empty */ 1877 if (ci == pi) { 1878 error = ENOENT; 1879 goto out; 1880 } 1881 1882 /* wrap the pi so the following test works */ 1883 if (pi >= aac_qinfo[queue].size) 1884 pi = 0; 1885 1886 notify = 0; 1887 if (ci == pi + 1) 1888 notify++; 1889 1890 /* wrap the queue? */ 1891 if (ci >= aac_qinfo[queue].size) 1892 ci = 0; 1893 1894 /* fetch the entry */ 1895 *fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size; 1896 1897 switch (queue) { 1898 case AAC_HOST_NORM_CMD_QUEUE: 1899 case AAC_HOST_HIGH_CMD_QUEUE: 1900 /* 1901 * The aq_fib_addr is only 32 bits wide so it can't be counted 1902 * on to hold an address. For AIF's, the adapter assumes 1903 * that it's giving us an address into the array of AIF fibs. 1904 * Therefore, we have to convert it to an index. 1905 */ 1906 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr / 1907 sizeof(struct aac_fib); 1908 *fib_addr = &sc->aac_common->ac_fibs[fib_index]; 1909 break; 1910 1911 case AAC_HOST_NORM_RESP_QUEUE: 1912 case AAC_HOST_HIGH_RESP_QUEUE: 1913 { 1914 struct aac_command *cm; 1915 1916 /* 1917 * As above, an index is used instead of an actual address. 1918 * Gotta shift the index to account for the fast response 1919 * bit. No other correction is needed since this value was 1920 * originally provided by the driver via the SenderFibAddress 1921 * field. 1922 */ 1923 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr; 1924 cm = sc->aac_commands + (fib_index >> 1); 1925 *fib_addr = cm->cm_fib; 1926 1927 /* 1928 * Is this a fast response? If it is, update the fib fields in 1929 * local memory since the whole fib isn't DMA'd back up. 1930 */ 1931 if (fib_index & 0x01) { 1932 (*fib_addr)->Header.XferState |= AAC_FIBSTATE_DONEADAP; 1933 *((u_int32_t*)((*fib_addr)->data)) = AAC_ERROR_NORMAL; 1934 } 1935 break; 1936 } 1937 default: 1938 panic("Invalid queue in aac_dequeue_fib()"); 1939 break; 1940 } 1941 1942 /* update consumer index */ 1943 sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1; 1944 1945 /* if we have made the queue un-full, notify the adapter */ 1946 if (notify && (aac_qinfo[queue].notify != 0)) 1947 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1948 error = 0; 1949 1950 out: 1951 return(error); 1952 } 1953 1954 /* 1955 * Put our response to an Adapter Initialed Fib on the response queue 1956 */ 1957 static int 1958 aac_enqueue_response(struct aac_softc *sc, int queue, struct aac_fib *fib) 1959 { 1960 u_int32_t pi, ci; 1961 int error; 1962 u_int32_t fib_size; 1963 u_int32_t fib_addr; 1964 1965 debug_called(1); 1966 1967 /* Tell the adapter where the FIB is */ 1968 fib_size = fib->Header.Size; 1969 fib_addr = fib->Header.SenderFibAddress; 1970 fib->Header.ReceiverFibAddress = fib_addr; 1971 1972 /* get the producer/consumer indices */ 1973 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1974 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1975 1976 /* wrap the queue? */ 1977 if (pi >= aac_qinfo[queue].size) 1978 pi = 0; 1979 1980 /* check for queue full */ 1981 if ((pi + 1) == ci) { 1982 error = EBUSY; 1983 goto out; 1984 } 1985 1986 /* populate queue entry */ 1987 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1988 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1989 1990 /* update producer index */ 1991 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1992 1993 /* notify the adapter if we know how */ 1994 if (aac_qinfo[queue].notify != 0) 1995 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1996 1997 error = 0; 1998 1999 out: 2000 return(error); 2001 } 2002 2003 /* 2004 * Check for commands that have been outstanding for a suspiciously long time, 2005 * and complain about them. 2006 */ 2007 static void 2008 aac_timeout(struct aac_softc *sc) 2009 { 2010 struct aac_command *cm; 2011 time_t deadline; 2012 2013 /* 2014 * Traverse the busy command list, bitch about late commands once 2015 * only. 2016 */ 2017 deadline = time_second - AAC_CMD_TIMEOUT; 2018 TAILQ_FOREACH(cm, &sc->aac_busy, cm_link) { 2019 if ((cm->cm_timestamp < deadline) 2020 /* && !(cm->cm_flags & AAC_CMD_TIMEDOUT) */) { 2021 cm->cm_flags |= AAC_CMD_TIMEDOUT; 2022 device_printf(sc->aac_dev, 2023 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", 2024 cm, (int)(time_second-cm->cm_timestamp)); 2025 AAC_PRINT_FIB(sc, cm->cm_fib); 2026 } 2027 } 2028 2029 return; 2030 } 2031 2032 /* 2033 * Interface Function Vectors 2034 */ 2035 2036 /* 2037 * Read the current firmware status word. 2038 */ 2039 static int 2040 aac_sa_get_fwstatus(struct aac_softc *sc) 2041 { 2042 debug_called(3); 2043 2044 return(AAC_GETREG4(sc, AAC_SA_FWSTATUS)); 2045 } 2046 2047 static int 2048 aac_rx_get_fwstatus(struct aac_softc *sc) 2049 { 2050 debug_called(3); 2051 2052 return(AAC_GETREG4(sc, AAC_RX_FWSTATUS)); 2053 } 2054 2055 static int 2056 aac_fa_get_fwstatus(struct aac_softc *sc) 2057 { 2058 int val; 2059 2060 debug_called(3); 2061 2062 val = AAC_GETREG4(sc, AAC_FA_FWSTATUS); 2063 return (val); 2064 } 2065 2066 /* 2067 * Notify the controller of a change in a given queue 2068 */ 2069 2070 static void 2071 aac_sa_qnotify(struct aac_softc *sc, int qbit) 2072 { 2073 debug_called(3); 2074 2075 AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit); 2076 } 2077 2078 static void 2079 aac_rx_qnotify(struct aac_softc *sc, int qbit) 2080 { 2081 debug_called(3); 2082 2083 AAC_SETREG4(sc, AAC_RX_IDBR, qbit); 2084 } 2085 2086 static void 2087 aac_fa_qnotify(struct aac_softc *sc, int qbit) 2088 { 2089 debug_called(3); 2090 2091 AAC_SETREG2(sc, AAC_FA_DOORBELL1, qbit); 2092 AAC_FA_HACK(sc); 2093 } 2094 2095 /* 2096 * Get the interrupt reason bits 2097 */ 2098 static int 2099 aac_sa_get_istatus(struct aac_softc *sc) 2100 { 2101 debug_called(3); 2102 2103 return(AAC_GETREG2(sc, AAC_SA_DOORBELL0)); 2104 } 2105 2106 static int 2107 aac_rx_get_istatus(struct aac_softc *sc) 2108 { 2109 debug_called(3); 2110 2111 return(AAC_GETREG4(sc, AAC_RX_ODBR)); 2112 } 2113 2114 static int 2115 aac_fa_get_istatus(struct aac_softc *sc) 2116 { 2117 int val; 2118 2119 debug_called(3); 2120 2121 val = AAC_GETREG2(sc, AAC_FA_DOORBELL0); 2122 return (val); 2123 } 2124 2125 /* 2126 * Clear some interrupt reason bits 2127 */ 2128 static void 2129 aac_sa_clear_istatus(struct aac_softc *sc, int mask) 2130 { 2131 debug_called(3); 2132 2133 AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask); 2134 } 2135 2136 static void 2137 aac_rx_clear_istatus(struct aac_softc *sc, int mask) 2138 { 2139 debug_called(3); 2140 2141 AAC_SETREG4(sc, AAC_RX_ODBR, mask); 2142 } 2143 2144 static void 2145 aac_fa_clear_istatus(struct aac_softc *sc, int mask) 2146 { 2147 debug_called(3); 2148 2149 AAC_SETREG2(sc, AAC_FA_DOORBELL0_CLEAR, mask); 2150 AAC_FA_HACK(sc); 2151 } 2152 2153 /* 2154 * Populate the mailbox and set the command word 2155 */ 2156 static void 2157 aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2158 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2159 { 2160 debug_called(4); 2161 2162 AAC_SETREG4(sc, AAC_SA_MAILBOX, command); 2163 AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0); 2164 AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1); 2165 AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2); 2166 AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3); 2167 } 2168 2169 static void 2170 aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 2171 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2172 { 2173 debug_called(4); 2174 2175 AAC_SETREG4(sc, AAC_RX_MAILBOX, command); 2176 AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0); 2177 AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1); 2178 AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2); 2179 AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3); 2180 } 2181 2182 static void 2183 aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2184 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2185 { 2186 debug_called(4); 2187 2188 AAC_SETREG4(sc, AAC_FA_MAILBOX, command); 2189 AAC_FA_HACK(sc); 2190 AAC_SETREG4(sc, AAC_FA_MAILBOX + 4, arg0); 2191 AAC_FA_HACK(sc); 2192 AAC_SETREG4(sc, AAC_FA_MAILBOX + 8, arg1); 2193 AAC_FA_HACK(sc); 2194 AAC_SETREG4(sc, AAC_FA_MAILBOX + 12, arg2); 2195 AAC_FA_HACK(sc); 2196 AAC_SETREG4(sc, AAC_FA_MAILBOX + 16, arg3); 2197 AAC_FA_HACK(sc); 2198 } 2199 2200 /* 2201 * Fetch the immediate command status word 2202 */ 2203 static int 2204 aac_sa_get_mailbox(struct aac_softc *sc, int mb) 2205 { 2206 debug_called(4); 2207 2208 return(AAC_GETREG4(sc, AAC_SA_MAILBOX + (mb * 4))); 2209 } 2210 2211 static int 2212 aac_rx_get_mailbox(struct aac_softc *sc, int mb) 2213 { 2214 debug_called(4); 2215 2216 return(AAC_GETREG4(sc, AAC_RX_MAILBOX + (mb * 4))); 2217 } 2218 2219 static int 2220 aac_fa_get_mailbox(struct aac_softc *sc, int mb) 2221 { 2222 int val; 2223 2224 debug_called(4); 2225 2226 val = AAC_GETREG4(sc, AAC_FA_MAILBOX + (mb * 4)); 2227 return (val); 2228 } 2229 2230 /* 2231 * Set/clear interrupt masks 2232 */ 2233 static void 2234 aac_sa_set_interrupts(struct aac_softc *sc, int enable) 2235 { 2236 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2237 2238 if (enable) { 2239 AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2240 } else { 2241 AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0); 2242 } 2243 } 2244 2245 static void 2246 aac_rx_set_interrupts(struct aac_softc *sc, int enable) 2247 { 2248 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2249 2250 if (enable) { 2251 AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS); 2252 } else { 2253 AAC_SETREG4(sc, AAC_RX_OIMR, ~0); 2254 } 2255 } 2256 2257 static void 2258 aac_fa_set_interrupts(struct aac_softc *sc, int enable) 2259 { 2260 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2261 2262 if (enable) { 2263 AAC_SETREG2((sc), AAC_FA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2264 AAC_FA_HACK(sc); 2265 } else { 2266 AAC_SETREG2((sc), AAC_FA_MASK0, ~0); 2267 AAC_FA_HACK(sc); 2268 } 2269 } 2270 2271 /* 2272 * Debugging and Diagnostics 2273 */ 2274 2275 /* 2276 * Print some information about the controller. 2277 */ 2278 static void 2279 aac_describe_controller(struct aac_softc *sc) 2280 { 2281 struct aac_fib *fib; 2282 struct aac_adapter_info *info; 2283 2284 debug_called(2); 2285 2286 aac_alloc_sync_fib(sc, &fib, 0); 2287 2288 fib->data[0] = 0; 2289 if (aac_sync_fib(sc, RequestAdapterInfo, 0, fib, 1)) { 2290 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 2291 aac_release_sync_fib(sc); 2292 return; 2293 } 2294 info = (struct aac_adapter_info *)&fib->data[0]; 2295 2296 device_printf(sc->aac_dev, "%s %dMHz, %dMB cache memory, %s\n", 2297 aac_describe_code(aac_cpu_variant, info->CpuVariant), 2298 info->ClockSpeed, info->BufferMem / (1024 * 1024), 2299 aac_describe_code(aac_battery_platform, 2300 info->batteryPlatform)); 2301 2302 /* save the kernel revision structure for later use */ 2303 sc->aac_revision = info->KernelRevision; 2304 device_printf(sc->aac_dev, "Kernel %d.%d-%d, Build %d, S/N %6X\n", 2305 info->KernelRevision.external.comp.major, 2306 info->KernelRevision.external.comp.minor, 2307 info->KernelRevision.external.comp.dash, 2308 info->KernelRevision.buildNumber, 2309 (u_int32_t)(info->SerialNumber & 0xffffff)); 2310 2311 aac_release_sync_fib(sc); 2312 2313 if (1 || bootverbose) { 2314 device_printf(sc->aac_dev, "Supported Options=%b\n", 2315 sc->supported_options, 2316 "\20" 2317 "\1SNAPSHOT" 2318 "\2CLUSTERS" 2319 "\3WCACHE" 2320 "\4DATA64" 2321 "\5HOSTTIME" 2322 "\6RAID50" 2323 "\7WINDOW4GB" 2324 "\10SCSIUPGD" 2325 "\11SOFTERR" 2326 "\12NORECOND" 2327 "\13SGMAP64" 2328 "\14ALARM" 2329 "\15NONDASD"); 2330 } 2331 } 2332 2333 /* 2334 * Look up a text description of a numeric error code and return a pointer to 2335 * same. 2336 */ 2337 static char * 2338 aac_describe_code(struct aac_code_lookup *table, u_int32_t code) 2339 { 2340 int i; 2341 2342 for (i = 0; table[i].string != NULL; i++) 2343 if (table[i].code == code) 2344 return(table[i].string); 2345 return(table[i + 1].string); 2346 } 2347 2348 /* 2349 * Management Interface 2350 */ 2351 2352 static int 2353 aac_open(dev_t dev, int flags, int fmt, d_thread_t *td) 2354 { 2355 struct aac_softc *sc; 2356 2357 debug_called(2); 2358 2359 sc = dev->si_drv1; 2360 2361 /* Check to make sure the device isn't already open */ 2362 if (sc->aac_state & AAC_STATE_OPEN) { 2363 return EBUSY; 2364 } 2365 sc->aac_state |= AAC_STATE_OPEN; 2366 2367 return 0; 2368 } 2369 2370 static int 2371 aac_close(dev_t dev, int flags, int fmt, d_thread_t *td) 2372 { 2373 struct aac_softc *sc; 2374 2375 debug_called(2); 2376 2377 sc = dev->si_drv1; 2378 2379 /* Mark this unit as no longer open */ 2380 sc->aac_state &= ~AAC_STATE_OPEN; 2381 2382 return 0; 2383 } 2384 2385 static int 2386 aac_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, d_thread_t *td) 2387 { 2388 union aac_statrequest *as; 2389 struct aac_softc *sc; 2390 int error = 0; 2391 uint32_t cookie; 2392 2393 debug_called(2); 2394 2395 as = (union aac_statrequest *)arg; 2396 sc = dev->si_drv1; 2397 2398 switch (cmd) { 2399 case AACIO_STATS: 2400 switch (as->as_item) { 2401 case AACQ_FREE: 2402 case AACQ_BIO: 2403 case AACQ_READY: 2404 case AACQ_BUSY: 2405 bcopy(&sc->aac_qstat[as->as_item], &as->as_qstat, 2406 sizeof(struct aac_qstat)); 2407 break; 2408 default: 2409 error = ENOENT; 2410 break; 2411 } 2412 break; 2413 2414 case FSACTL_SENDFIB: 2415 arg = *(caddr_t*)arg; 2416 case FSACTL_LNX_SENDFIB: 2417 debug(1, "FSACTL_SENDFIB"); 2418 error = aac_ioctl_sendfib(sc, arg); 2419 break; 2420 case FSACTL_AIF_THREAD: 2421 case FSACTL_LNX_AIF_THREAD: 2422 debug(1, "FSACTL_AIF_THREAD"); 2423 error = EINVAL; 2424 break; 2425 case FSACTL_OPEN_GET_ADAPTER_FIB: 2426 arg = *(caddr_t*)arg; 2427 case FSACTL_LNX_OPEN_GET_ADAPTER_FIB: 2428 debug(1, "FSACTL_OPEN_GET_ADAPTER_FIB"); 2429 /* 2430 * Pass the caller out an AdapterFibContext. 2431 * 2432 * Note that because we only support one opener, we 2433 * basically ignore this. Set the caller's context to a magic 2434 * number just in case. 2435 * 2436 * The Linux code hands the driver a pointer into kernel space, 2437 * and then trusts it when the caller hands it back. Aiee! 2438 * Here, we give it the proc pointer of the per-adapter aif 2439 * thread. It's only used as a sanity check in other calls. 2440 */ 2441 cookie = (uint32_t)(uintptr_t)sc->aifthread; 2442 error = copyout(&cookie, arg, sizeof(cookie)); 2443 break; 2444 case FSACTL_GET_NEXT_ADAPTER_FIB: 2445 arg = *(caddr_t*)arg; 2446 case FSACTL_LNX_GET_NEXT_ADAPTER_FIB: 2447 debug(1, "FSACTL_GET_NEXT_ADAPTER_FIB"); 2448 error = aac_getnext_aif(sc, arg); 2449 break; 2450 case FSACTL_CLOSE_GET_ADAPTER_FIB: 2451 case FSACTL_LNX_CLOSE_GET_ADAPTER_FIB: 2452 debug(1, "FSACTL_CLOSE_GET_ADAPTER_FIB"); 2453 /* don't do anything here */ 2454 break; 2455 case FSACTL_MINIPORT_REV_CHECK: 2456 arg = *(caddr_t*)arg; 2457 case FSACTL_LNX_MINIPORT_REV_CHECK: 2458 debug(1, "FSACTL_MINIPORT_REV_CHECK"); 2459 error = aac_rev_check(sc, arg); 2460 break; 2461 case FSACTL_QUERY_DISK: 2462 arg = *(caddr_t*)arg; 2463 case FSACTL_LNX_QUERY_DISK: 2464 debug(1, "FSACTL_QUERY_DISK"); 2465 error = aac_query_disk(sc, arg); 2466 break; 2467 case FSACTL_DELETE_DISK: 2468 case FSACTL_LNX_DELETE_DISK: 2469 /* 2470 * We don't trust the underland to tell us when to delete a 2471 * container, rather we rely on an AIF coming from the 2472 * controller 2473 */ 2474 error = 0; 2475 break; 2476 default: 2477 debug(1, "unsupported cmd 0x%lx\n", cmd); 2478 error = EINVAL; 2479 break; 2480 } 2481 return(error); 2482 } 2483 2484 static int 2485 aac_poll(dev_t dev, int poll_events, d_thread_t *td) 2486 { 2487 struct aac_softc *sc; 2488 int revents; 2489 2490 sc = dev->si_drv1; 2491 revents = 0; 2492 2493 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2494 if ((poll_events & (POLLRDNORM | POLLIN)) != 0) { 2495 if (sc->aac_aifq_tail != sc->aac_aifq_head) 2496 revents |= poll_events & (POLLIN | POLLRDNORM); 2497 } 2498 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2499 2500 if (revents == 0) { 2501 if (poll_events & (POLLIN | POLLRDNORM)) 2502 selrecord(td, &sc->rcv_select); 2503 } 2504 2505 return (revents); 2506 } 2507 2508 /* 2509 * Send a FIB supplied from userspace 2510 */ 2511 static int 2512 aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib) 2513 { 2514 struct aac_command *cm; 2515 int size, error; 2516 2517 debug_called(2); 2518 2519 cm = NULL; 2520 2521 /* 2522 * Get a command 2523 */ 2524 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 2525 if (aac_alloc_command(sc, &cm)) { 2526 error = EBUSY; 2527 goto out; 2528 } 2529 2530 /* 2531 * Fetch the FIB header, then re-copy to get data as well. 2532 */ 2533 if ((error = copyin(ufib, cm->cm_fib, 2534 sizeof(struct aac_fib_header))) != 0) 2535 goto out; 2536 size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header); 2537 if (size > sizeof(struct aac_fib)) { 2538 device_printf(sc->aac_dev, "incoming FIB oversized (%d > %zd)\n", 2539 size, sizeof(struct aac_fib)); 2540 size = sizeof(struct aac_fib); 2541 } 2542 if ((error = copyin(ufib, cm->cm_fib, size)) != 0) 2543 goto out; 2544 cm->cm_fib->Header.Size = size; 2545 cm->cm_timestamp = time_second; 2546 2547 /* 2548 * Pass the FIB to the controller, wait for it to complete. 2549 */ 2550 if ((error = aac_wait_command(cm, 30)) != 0) { /* XXX user timeout? */ 2551 device_printf(sc->aac_dev, 2552 "aac_wait_command return %d\n", error); 2553 goto out; 2554 } 2555 2556 /* 2557 * Copy the FIB and data back out to the caller. 2558 */ 2559 size = cm->cm_fib->Header.Size; 2560 if (size > sizeof(struct aac_fib)) { 2561 device_printf(sc->aac_dev, "outbound FIB oversized (%d > %zd)\n", 2562 size, sizeof(struct aac_fib)); 2563 size = sizeof(struct aac_fib); 2564 } 2565 error = copyout(cm->cm_fib, ufib, size); 2566 2567 out: 2568 if (cm != NULL) { 2569 aac_release_command(cm); 2570 } 2571 2572 AAC_LOCK_RELEASE(&sc->aac_io_lock); 2573 return(error); 2574 } 2575 2576 /* 2577 * Handle an AIF sent to us by the controller; queue it for later reference. 2578 * If the queue fills up, then drop the older entries. 2579 */ 2580 static void 2581 aac_handle_aif(struct aac_softc *sc, struct aac_fib *fib) 2582 { 2583 struct aac_aif_command *aif; 2584 struct aac_container *co, *co_next; 2585 struct aac_mntinfo *mi; 2586 struct aac_mntinforesp *mir = NULL; 2587 u_int16_t rsize; 2588 int next, found; 2589 int count = 0, added = 0, i = 0; 2590 2591 debug_called(2); 2592 2593 aif = (struct aac_aif_command*)&fib->data[0]; 2594 aac_print_aif(sc, aif); 2595 2596 /* Is it an event that we should care about? */ 2597 switch (aif->command) { 2598 case AifCmdEventNotify: 2599 switch (aif->data.EN.type) { 2600 case AifEnAddContainer: 2601 case AifEnDeleteContainer: 2602 /* 2603 * A container was added or deleted, but the message 2604 * doesn't tell us anything else! Re-enumerate the 2605 * containers and sort things out. 2606 */ 2607 aac_alloc_sync_fib(sc, &fib, 0); 2608 mi = (struct aac_mntinfo *)&fib->data[0]; 2609 do { 2610 /* 2611 * Ask the controller for its containers one at 2612 * a time. 2613 * XXX What if the controller's list changes 2614 * midway through this enumaration? 2615 * XXX This should be done async. 2616 */ 2617 bzero(mi, sizeof(struct aac_mntinfo)); 2618 mi->Command = VM_NameServe; 2619 mi->MntType = FT_FILESYS; 2620 mi->MntCount = i; 2621 rsize = sizeof(mir); 2622 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 2623 sizeof(struct aac_mntinfo))) { 2624 printf("Error probing container %d\n", 2625 i); 2626 continue; 2627 } 2628 mir = (struct aac_mntinforesp *)&fib->data[0]; 2629 /* XXX Need to check if count changed */ 2630 count = mir->MntRespCount; 2631 /* 2632 * Check the container against our list. 2633 * co->co_found was already set to 0 in a 2634 * previous run. 2635 */ 2636 if ((mir->Status == ST_OK) && 2637 (mir->MntTable[0].VolType != CT_NONE)) { 2638 found = 0; 2639 TAILQ_FOREACH(co, 2640 &sc->aac_container_tqh, 2641 co_link) { 2642 if (co->co_mntobj.ObjectId == 2643 mir->MntTable[0].ObjectId) { 2644 co->co_found = 1; 2645 found = 1; 2646 break; 2647 } 2648 } 2649 /* 2650 * If the container matched, continue 2651 * in the list. 2652 */ 2653 if (found) { 2654 i++; 2655 continue; 2656 } 2657 2658 /* 2659 * This is a new container. Do all the 2660 * appropriate things to set it up. 2661 */ 2662 aac_add_container(sc, mir, 1); 2663 added = 1; 2664 } 2665 i++; 2666 } while ((i < count) && (i < AAC_MAX_CONTAINERS)); 2667 aac_release_sync_fib(sc); 2668 2669 /* 2670 * Go through our list of containers and see which ones 2671 * were not marked 'found'. Since the controller didn't 2672 * list them they must have been deleted. Do the 2673 * appropriate steps to destroy the device. Also reset 2674 * the co->co_found field. 2675 */ 2676 co = TAILQ_FIRST(&sc->aac_container_tqh); 2677 while (co != NULL) { 2678 if (co->co_found == 0) { 2679 device_delete_child(sc->aac_dev, 2680 co->co_disk); 2681 co_next = TAILQ_NEXT(co, co_link); 2682 AAC_LOCK_ACQUIRE(&sc-> 2683 aac_container_lock); 2684 TAILQ_REMOVE(&sc->aac_container_tqh, co, 2685 co_link); 2686 AAC_LOCK_RELEASE(&sc-> 2687 aac_container_lock); 2688 FREE(co, M_AACBUF); 2689 co = co_next; 2690 } else { 2691 co->co_found = 0; 2692 co = TAILQ_NEXT(co, co_link); 2693 } 2694 } 2695 2696 /* Attach the newly created containers */ 2697 if (added) 2698 bus_generic_attach(sc->aac_dev); 2699 2700 break; 2701 2702 default: 2703 break; 2704 } 2705 2706 default: 2707 break; 2708 } 2709 2710 /* Copy the AIF data to the AIF queue for ioctl retrieval */ 2711 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2712 next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH; 2713 if (next != sc->aac_aifq_tail) { 2714 bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command)); 2715 sc->aac_aifq_head = next; 2716 2717 /* On the off chance that someone is sleeping for an aif... */ 2718 if (sc->aac_state & AAC_STATE_AIF_SLEEPER) 2719 wakeup(sc->aac_aifq); 2720 /* Wakeup any poll()ers */ 2721 selwakeuppri(&sc->rcv_select, PRIBIO); 2722 } 2723 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2724 2725 return; 2726 } 2727 2728 /* 2729 * Return the Revision of the driver to userspace and check to see if the 2730 * userspace app is possibly compatible. This is extremely bogus since 2731 * our driver doesn't follow Adaptec's versioning system. Cheat by just 2732 * returning what the card reported. 2733 */ 2734 static int 2735 aac_rev_check(struct aac_softc *sc, caddr_t udata) 2736 { 2737 struct aac_rev_check rev_check; 2738 struct aac_rev_check_resp rev_check_resp; 2739 int error = 0; 2740 2741 debug_called(2); 2742 2743 /* 2744 * Copyin the revision struct from userspace 2745 */ 2746 if ((error = copyin(udata, (caddr_t)&rev_check, 2747 sizeof(struct aac_rev_check))) != 0) { 2748 return error; 2749 } 2750 2751 debug(2, "Userland revision= %d\n", 2752 rev_check.callingRevision.buildNumber); 2753 2754 /* 2755 * Doctor up the response struct. 2756 */ 2757 rev_check_resp.possiblyCompatible = 1; 2758 rev_check_resp.adapterSWRevision.external.ul = 2759 sc->aac_revision.external.ul; 2760 rev_check_resp.adapterSWRevision.buildNumber = 2761 sc->aac_revision.buildNumber; 2762 2763 return(copyout((caddr_t)&rev_check_resp, udata, 2764 sizeof(struct aac_rev_check_resp))); 2765 } 2766 2767 /* 2768 * Pass the caller the next AIF in their queue 2769 */ 2770 static int 2771 aac_getnext_aif(struct aac_softc *sc, caddr_t arg) 2772 { 2773 struct get_adapter_fib_ioctl agf; 2774 int error; 2775 2776 debug_called(2); 2777 2778 if ((error = copyin(arg, &agf, sizeof(agf))) == 0) { 2779 2780 /* 2781 * Check the magic number that we gave the caller. 2782 */ 2783 if (agf.AdapterFibContext != (int)(uintptr_t)sc->aifthread) { 2784 error = EFAULT; 2785 } else { 2786 error = aac_return_aif(sc, agf.AifFib); 2787 if ((error == EAGAIN) && (agf.Wait)) { 2788 sc->aac_state |= AAC_STATE_AIF_SLEEPER; 2789 while (error == EAGAIN) { 2790 error = tsleep(sc->aac_aifq, PRIBIO | 2791 PCATCH, "aacaif", 0); 2792 if (error == 0) 2793 error = aac_return_aif(sc, 2794 agf.AifFib); 2795 } 2796 sc->aac_state &= ~AAC_STATE_AIF_SLEEPER; 2797 } 2798 } 2799 } 2800 return(error); 2801 } 2802 2803 /* 2804 * Hand the next AIF off the top of the queue out to userspace. 2805 */ 2806 static int 2807 aac_return_aif(struct aac_softc *sc, caddr_t uptr) 2808 { 2809 int next, error; 2810 2811 debug_called(2); 2812 2813 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2814 if (sc->aac_aifq_tail == sc->aac_aifq_head) { 2815 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2816 return (EAGAIN); 2817 } 2818 2819 next = (sc->aac_aifq_tail + 1) % AAC_AIFQ_LENGTH; 2820 error = copyout(&sc->aac_aifq[next], uptr, 2821 sizeof(struct aac_aif_command)); 2822 if (error) 2823 device_printf(sc->aac_dev, 2824 "aac_return_aif: copyout returned %d\n", error); 2825 else 2826 sc->aac_aifq_tail = next; 2827 2828 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2829 return(error); 2830 } 2831 2832 /* 2833 * Give the userland some information about the container. The AAC arch 2834 * expects the driver to be a SCSI passthrough type driver, so it expects 2835 * the containers to have b:t:l numbers. Fake it. 2836 */ 2837 static int 2838 aac_query_disk(struct aac_softc *sc, caddr_t uptr) 2839 { 2840 struct aac_query_disk query_disk; 2841 struct aac_container *co; 2842 struct aac_disk *disk; 2843 int error, id; 2844 2845 debug_called(2); 2846 2847 disk = NULL; 2848 2849 error = copyin(uptr, (caddr_t)&query_disk, 2850 sizeof(struct aac_query_disk)); 2851 if (error) 2852 return (error); 2853 2854 id = query_disk.ContainerNumber; 2855 if (id == -1) 2856 return (EINVAL); 2857 2858 AAC_LOCK_ACQUIRE(&sc->aac_container_lock); 2859 TAILQ_FOREACH(co, &sc->aac_container_tqh, co_link) { 2860 if (co->co_mntobj.ObjectId == id) 2861 break; 2862 } 2863 2864 if (co == NULL) { 2865 query_disk.Valid = 0; 2866 query_disk.Locked = 0; 2867 query_disk.Deleted = 1; /* XXX is this right? */ 2868 } else { 2869 disk = device_get_softc(co->co_disk); 2870 query_disk.Valid = 1; 2871 query_disk.Locked = 2872 (disk->ad_flags & AAC_DISK_OPEN) ? 1 : 0; 2873 query_disk.Deleted = 0; 2874 query_disk.Bus = device_get_unit(sc->aac_dev); 2875 query_disk.Target = disk->unit; 2876 query_disk.Lun = 0; 2877 query_disk.UnMapped = 0; 2878 sprintf(&query_disk.diskDeviceName[0], "%s%d", 2879 disk->ad_disk->d_name, disk->ad_disk->d_unit); 2880 } 2881 AAC_LOCK_RELEASE(&sc->aac_container_lock); 2882 2883 error = copyout((caddr_t)&query_disk, uptr, 2884 sizeof(struct aac_query_disk)); 2885 2886 return (error); 2887 } 2888 2889 static void 2890 aac_get_bus_info(struct aac_softc *sc) 2891 { 2892 struct aac_fib *fib; 2893 struct aac_ctcfg *c_cmd; 2894 struct aac_ctcfg_resp *c_resp; 2895 struct aac_vmioctl *vmi; 2896 struct aac_vmi_businf_resp *vmi_resp; 2897 struct aac_getbusinf businfo; 2898 struct aac_sim *caminf; 2899 device_t child; 2900 int i, found, error; 2901 2902 aac_alloc_sync_fib(sc, &fib, 0); 2903 c_cmd = (struct aac_ctcfg *)&fib->data[0]; 2904 bzero(c_cmd, sizeof(struct aac_ctcfg)); 2905 2906 c_cmd->Command = VM_ContainerConfig; 2907 c_cmd->cmd = CT_GET_SCSI_METHOD; 2908 c_cmd->param = 0; 2909 2910 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2911 sizeof(struct aac_ctcfg)); 2912 if (error) { 2913 device_printf(sc->aac_dev, "Error %d sending " 2914 "VM_ContainerConfig command\n", error); 2915 aac_release_sync_fib(sc); 2916 return; 2917 } 2918 2919 c_resp = (struct aac_ctcfg_resp *)&fib->data[0]; 2920 if (c_resp->Status != ST_OK) { 2921 device_printf(sc->aac_dev, "VM_ContainerConfig returned 0x%x\n", 2922 c_resp->Status); 2923 aac_release_sync_fib(sc); 2924 return; 2925 } 2926 2927 sc->scsi_method_id = c_resp->param; 2928 2929 vmi = (struct aac_vmioctl *)&fib->data[0]; 2930 bzero(vmi, sizeof(struct aac_vmioctl)); 2931 2932 vmi->Command = VM_Ioctl; 2933 vmi->ObjType = FT_DRIVE; 2934 vmi->MethId = sc->scsi_method_id; 2935 vmi->ObjId = 0; 2936 vmi->IoctlCmd = GetBusInfo; 2937 2938 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2939 sizeof(struct aac_vmioctl)); 2940 if (error) { 2941 device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n", 2942 error); 2943 aac_release_sync_fib(sc); 2944 return; 2945 } 2946 2947 vmi_resp = (struct aac_vmi_businf_resp *)&fib->data[0]; 2948 if (vmi_resp->Status != ST_OK) { 2949 device_printf(sc->aac_dev, "VM_Ioctl returned %d\n", 2950 vmi_resp->Status); 2951 aac_release_sync_fib(sc); 2952 return; 2953 } 2954 2955 bcopy(&vmi_resp->BusInf, &businfo, sizeof(struct aac_getbusinf)); 2956 aac_release_sync_fib(sc); 2957 2958 found = 0; 2959 for (i = 0; i < businfo.BusCount; i++) { 2960 if (businfo.BusValid[i] != AAC_BUS_VALID) 2961 continue; 2962 2963 caminf = (struct aac_sim *)malloc( sizeof(struct aac_sim), 2964 M_AACBUF, M_NOWAIT | M_ZERO); 2965 if (caminf == NULL) 2966 continue; 2967 2968 child = device_add_child(sc->aac_dev, "aacp", -1); 2969 if (child == NULL) { 2970 device_printf(sc->aac_dev, "device_add_child failed\n"); 2971 continue; 2972 } 2973 2974 caminf->TargetsPerBus = businfo.TargetsPerBus; 2975 caminf->BusNumber = i; 2976 caminf->InitiatorBusId = businfo.InitiatorBusId[i]; 2977 caminf->aac_sc = sc; 2978 caminf->sim_dev = child; 2979 2980 device_set_ivars(child, caminf); 2981 device_set_desc(child, "SCSI Passthrough Bus"); 2982 TAILQ_INSERT_TAIL(&sc->aac_sim_tqh, caminf, sim_link); 2983 2984 found = 1; 2985 } 2986 2987 if (found) 2988 bus_generic_attach(sc->aac_dev); 2989 2990 return; 2991 } 2992