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 * $FreeBSD$ 30 */ 31 32 /* 33 * Driver for the Adaptec 'FSA' family of PCI/SCSI RAID adapters. 34 */ 35 36 #include "opt_aac.h" 37 38 /* #include <stddef.h> */ 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/malloc.h> 42 #include <sys/kernel.h> 43 #include <sys/kthread.h> 44 #include <sys/sysctl.h> 45 #include <sys/poll.h> 46 #include <sys/ioccom.h> 47 48 #include <sys/bus.h> 49 #include <sys/conf.h> 50 #include <sys/signalvar.h> 51 #include <sys/time.h> 52 #include <sys/eventhandler.h> 53 54 #include <machine/bus_memio.h> 55 #include <machine/bus.h> 56 #include <machine/resource.h> 57 58 #include <dev/aac/aacreg.h> 59 #include <dev/aac/aac_ioctl.h> 60 #include <dev/aac/aacvar.h> 61 #include <dev/aac/aac_tables.h> 62 63 static void aac_startup(void *arg); 64 static void aac_add_container(struct aac_softc *sc, 65 struct aac_mntinforesp *mir, int f); 66 static void aac_get_bus_info(struct aac_softc *sc); 67 68 /* Command Processing */ 69 static void aac_timeout(struct aac_softc *sc); 70 static int aac_start(struct aac_command *cm); 71 static void aac_complete(void *context, int pending); 72 static int aac_bio_command(struct aac_softc *sc, struct aac_command **cmp); 73 static void aac_bio_complete(struct aac_command *cm); 74 static int aac_wait_command(struct aac_command *cm, int timeout); 75 static void aac_command_thread(struct aac_softc *sc); 76 77 /* Command Buffer Management */ 78 static void aac_map_command_helper(void *arg, bus_dma_segment_t *segs, 79 int nseg, int error); 80 static int aac_alloc_commands(struct aac_softc *sc); 81 static void aac_free_commands(struct aac_softc *sc); 82 static void aac_map_command(struct aac_command *cm); 83 static void aac_unmap_command(struct aac_command *cm); 84 85 /* Hardware Interface */ 86 static void aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, 87 int error); 88 static int aac_check_firmware(struct aac_softc *sc); 89 static int aac_init(struct aac_softc *sc); 90 static int aac_sync_command(struct aac_softc *sc, u_int32_t command, 91 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, 92 u_int32_t arg3, u_int32_t *sp); 93 static int aac_enqueue_fib(struct aac_softc *sc, int queue, 94 struct aac_command *cm); 95 static int aac_dequeue_fib(struct aac_softc *sc, int queue, 96 u_int32_t *fib_size, struct aac_fib **fib_addr); 97 static int aac_enqueue_response(struct aac_softc *sc, int queue, 98 struct aac_fib *fib); 99 100 /* Falcon/PPC interface */ 101 static int aac_fa_get_fwstatus(struct aac_softc *sc); 102 static void aac_fa_qnotify(struct aac_softc *sc, int qbit); 103 static int aac_fa_get_istatus(struct aac_softc *sc); 104 static void aac_fa_clear_istatus(struct aac_softc *sc, int mask); 105 static void aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command, 106 u_int32_t arg0, u_int32_t arg1, 107 u_int32_t arg2, u_int32_t arg3); 108 static int aac_fa_get_mailbox(struct aac_softc *sc, int mb); 109 static void aac_fa_set_interrupts(struct aac_softc *sc, int enable); 110 111 struct aac_interface aac_fa_interface = { 112 aac_fa_get_fwstatus, 113 aac_fa_qnotify, 114 aac_fa_get_istatus, 115 aac_fa_clear_istatus, 116 aac_fa_set_mailbox, 117 aac_fa_get_mailbox, 118 aac_fa_set_interrupts 119 }; 120 121 /* StrongARM interface */ 122 static int aac_sa_get_fwstatus(struct aac_softc *sc); 123 static void aac_sa_qnotify(struct aac_softc *sc, int qbit); 124 static int aac_sa_get_istatus(struct aac_softc *sc); 125 static void aac_sa_clear_istatus(struct aac_softc *sc, int mask); 126 static void aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 127 u_int32_t arg0, u_int32_t arg1, 128 u_int32_t arg2, u_int32_t arg3); 129 static int aac_sa_get_mailbox(struct aac_softc *sc, int mb); 130 static void aac_sa_set_interrupts(struct aac_softc *sc, int enable); 131 132 struct aac_interface aac_sa_interface = { 133 aac_sa_get_fwstatus, 134 aac_sa_qnotify, 135 aac_sa_get_istatus, 136 aac_sa_clear_istatus, 137 aac_sa_set_mailbox, 138 aac_sa_get_mailbox, 139 aac_sa_set_interrupts 140 }; 141 142 /* i960Rx interface */ 143 static int aac_rx_get_fwstatus(struct aac_softc *sc); 144 static void aac_rx_qnotify(struct aac_softc *sc, int qbit); 145 static int aac_rx_get_istatus(struct aac_softc *sc); 146 static void aac_rx_clear_istatus(struct aac_softc *sc, int mask); 147 static void aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 148 u_int32_t arg0, u_int32_t arg1, 149 u_int32_t arg2, u_int32_t arg3); 150 static int aac_rx_get_mailbox(struct aac_softc *sc, int mb); 151 static void aac_rx_set_interrupts(struct aac_softc *sc, int enable); 152 153 struct aac_interface aac_rx_interface = { 154 aac_rx_get_fwstatus, 155 aac_rx_qnotify, 156 aac_rx_get_istatus, 157 aac_rx_clear_istatus, 158 aac_rx_set_mailbox, 159 aac_rx_get_mailbox, 160 aac_rx_set_interrupts 161 }; 162 163 /* Debugging and Diagnostics */ 164 static void aac_describe_controller(struct aac_softc *sc); 165 static char *aac_describe_code(struct aac_code_lookup *table, 166 u_int32_t code); 167 168 /* Management Interface */ 169 static d_open_t aac_open; 170 static d_close_t aac_close; 171 static d_ioctl_t aac_ioctl; 172 static d_poll_t aac_poll; 173 static int aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib); 174 static void aac_handle_aif(struct aac_softc *sc, 175 struct aac_fib *fib); 176 static int aac_rev_check(struct aac_softc *sc, caddr_t udata); 177 static int aac_getnext_aif(struct aac_softc *sc, caddr_t arg); 178 static int aac_return_aif(struct aac_softc *sc, caddr_t uptr); 179 static int aac_query_disk(struct aac_softc *sc, caddr_t uptr); 180 181 #define AAC_CDEV_MAJOR 150 182 183 static struct cdevsw aac_cdevsw = { 184 .d_open = aac_open, 185 .d_close = aac_close, 186 .d_ioctl = aac_ioctl, 187 .d_poll = aac_poll, 188 .d_name = "aac", 189 .d_maj = AAC_CDEV_MAJOR, 190 }; 191 192 MALLOC_DEFINE(M_AACBUF, "aacbuf", "Buffers for the AAC driver"); 193 194 /* sysctl node */ 195 SYSCTL_NODE(_hw, OID_AUTO, aac, CTLFLAG_RD, 0, "AAC driver parameters"); 196 197 /* 198 * Device Interface 199 */ 200 201 /* 202 * Initialise the controller and softc 203 */ 204 int 205 aac_attach(struct aac_softc *sc) 206 { 207 int error, unit; 208 209 debug_called(1); 210 211 /* 212 * Initialise per-controller queues. 213 */ 214 aac_initq_free(sc); 215 aac_initq_ready(sc); 216 aac_initq_busy(sc); 217 aac_initq_bio(sc); 218 219 /* 220 * Initialise command-completion task. 221 */ 222 TASK_INIT(&sc->aac_task_complete, 0, aac_complete, sc); 223 224 /* disable interrupts before we enable anything */ 225 AAC_MASK_INTERRUPTS(sc); 226 227 /* mark controller as suspended until we get ourselves organised */ 228 sc->aac_state |= AAC_STATE_SUSPEND; 229 230 /* 231 * Check that the firmware on the card is supported. 232 */ 233 if ((error = aac_check_firmware(sc)) != 0) 234 return(error); 235 236 /* Init the sync fib lock */ 237 AAC_LOCK_INIT(&sc->aac_sync_lock, "AAC sync FIB lock"); 238 239 /* 240 * Initialise the adapter. 241 */ 242 if ((error = aac_init(sc)) != 0) 243 return(error); 244 245 /* 246 * Print a little information about the controller. 247 */ 248 aac_describe_controller(sc); 249 250 /* 251 * Initialize locks 252 */ 253 AAC_LOCK_INIT(&sc->aac_aifq_lock, "AAC AIF lock"); 254 TAILQ_INIT(&sc->aac_container_tqh); 255 AAC_LOCK_INIT(&sc->aac_container_lock, "AAC container lock"); 256 AAC_LOCK_INIT(&sc->aac_io_lock, "AAC I/O lock"); 257 258 /* 259 * Register to probe our containers later. 260 */ 261 sc->aac_ich.ich_func = aac_startup; 262 sc->aac_ich.ich_arg = sc; 263 if (config_intrhook_establish(&sc->aac_ich) != 0) { 264 device_printf(sc->aac_dev, 265 "can't establish configuration hook\n"); 266 return(ENXIO); 267 } 268 269 /* 270 * Make the control device. 271 */ 272 unit = device_get_unit(sc->aac_dev); 273 sc->aac_dev_t = make_dev(&aac_cdevsw, unit, UID_ROOT, GID_OPERATOR, 274 0640, "aac%d", unit); 275 (void)make_dev_alias(sc->aac_dev_t, "afa%d", unit); 276 (void)make_dev_alias(sc->aac_dev_t, "hpn%d", unit); 277 sc->aac_dev_t->si_drv1 = sc; 278 279 /* Create the AIF thread */ 280 if (kthread_create((void(*)(void *))aac_command_thread, sc, 281 &sc->aifthread, 0, 0, "aac%daif", unit)) 282 panic("Could not create AIF thread\n"); 283 284 /* Register the shutdown method to only be called post-dump */ 285 if ((sc->eh = EVENTHANDLER_REGISTER(shutdown_final, aac_shutdown, 286 sc->aac_dev, SHUTDOWN_PRI_DEFAULT)) == NULL) 287 device_printf(sc->aac_dev, 288 "shutdown event registration failed\n"); 289 290 /* Register with CAM for the non-DASD devices */ 291 if ((sc->flags & AAC_FLAGS_ENABLE_CAM) != 0) { 292 TAILQ_INIT(&sc->aac_sim_tqh); 293 aac_get_bus_info(sc); 294 } 295 296 return(0); 297 } 298 299 /* 300 * Probe for containers, create disks. 301 */ 302 static void 303 aac_startup(void *arg) 304 { 305 struct aac_softc *sc; 306 struct aac_fib *fib; 307 struct aac_mntinfo *mi; 308 struct aac_mntinforesp *mir = NULL; 309 int i = 0; 310 311 debug_called(1); 312 313 sc = (struct aac_softc *)arg; 314 315 /* disconnect ourselves from the intrhook chain */ 316 config_intrhook_disestablish(&sc->aac_ich); 317 318 aac_alloc_sync_fib(sc, &fib, 0); 319 mi = (struct aac_mntinfo *)&fib->data[0]; 320 321 /* loop over possible containers */ 322 do { 323 /* request information on this container */ 324 bzero(mi, sizeof(struct aac_mntinfo)); 325 mi->Command = VM_NameServe; 326 mi->MntType = FT_FILESYS; 327 mi->MntCount = i; 328 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 329 sizeof(struct aac_mntinfo))) { 330 debug(2, "error probing container %d", i); 331 continue; 332 } 333 334 mir = (struct aac_mntinforesp *)&fib->data[0]; 335 aac_add_container(sc, mir, 0); 336 i++; 337 } while ((i < mir->MntRespCount) && (i < AAC_MAX_CONTAINERS)); 338 339 aac_release_sync_fib(sc); 340 341 /* poke the bus to actually attach the child devices */ 342 if (bus_generic_attach(sc->aac_dev)) 343 device_printf(sc->aac_dev, "bus_generic_attach failed\n"); 344 345 /* mark the controller up */ 346 sc->aac_state &= ~AAC_STATE_SUSPEND; 347 348 /* enable interrupts now */ 349 AAC_UNMASK_INTERRUPTS(sc); 350 } 351 352 /* 353 * Create a device to respresent a new container 354 */ 355 static void 356 aac_add_container(struct aac_softc *sc, struct aac_mntinforesp *mir, int f) 357 { 358 struct aac_container *co; 359 device_t child; 360 361 /* 362 * Check container volume type for validity. Note that many of 363 * the possible types may never show up. 364 */ 365 if ((mir->Status == ST_OK) && (mir->MntTable[0].VolType != CT_NONE)) { 366 co = (struct aac_container *)malloc(sizeof *co, M_AACBUF, 367 M_NOWAIT | M_ZERO); 368 if (co == NULL) 369 panic("Out of memory?!\n"); 370 debug(1, "id %x name '%.16s' size %u type %d", 371 mir->MntTable[0].ObjectId, 372 mir->MntTable[0].FileSystemName, 373 mir->MntTable[0].Capacity, mir->MntTable[0].VolType); 374 375 if ((child = device_add_child(sc->aac_dev, "aacd", -1)) == NULL) 376 device_printf(sc->aac_dev, "device_add_child failed\n"); 377 else 378 device_set_ivars(child, co); 379 device_set_desc(child, aac_describe_code(aac_container_types, 380 mir->MntTable[0].VolType)); 381 co->co_disk = child; 382 co->co_found = f; 383 bcopy(&mir->MntTable[0], &co->co_mntobj, 384 sizeof(struct aac_mntobj)); 385 AAC_LOCK_ACQUIRE(&sc->aac_container_lock); 386 TAILQ_INSERT_TAIL(&sc->aac_container_tqh, co, co_link); 387 AAC_LOCK_RELEASE(&sc->aac_container_lock); 388 } 389 } 390 391 /* 392 * Free all of the resources associated with (sc) 393 * 394 * Should not be called if the controller is active. 395 */ 396 void 397 aac_free(struct aac_softc *sc) 398 { 399 400 debug_called(1); 401 402 /* remove the control device */ 403 if (sc->aac_dev_t != NULL) 404 destroy_dev(sc->aac_dev_t); 405 406 /* throw away any FIB buffers, discard the FIB DMA tag */ 407 aac_free_commands(sc); 408 if (sc->aac_fib_dmat) 409 bus_dma_tag_destroy(sc->aac_fib_dmat); 410 411 free(sc->aac_commands, M_AACBUF); 412 413 /* destroy the common area */ 414 if (sc->aac_common) { 415 bus_dmamap_unload(sc->aac_common_dmat, sc->aac_common_dmamap); 416 bus_dmamem_free(sc->aac_common_dmat, sc->aac_common, 417 sc->aac_common_dmamap); 418 } 419 if (sc->aac_common_dmat) 420 bus_dma_tag_destroy(sc->aac_common_dmat); 421 422 /* disconnect the interrupt handler */ 423 if (sc->aac_intr) 424 bus_teardown_intr(sc->aac_dev, sc->aac_irq, sc->aac_intr); 425 if (sc->aac_irq != NULL) 426 bus_release_resource(sc->aac_dev, SYS_RES_IRQ, sc->aac_irq_rid, 427 sc->aac_irq); 428 429 /* destroy data-transfer DMA tag */ 430 if (sc->aac_buffer_dmat) 431 bus_dma_tag_destroy(sc->aac_buffer_dmat); 432 433 /* destroy the parent DMA tag */ 434 if (sc->aac_parent_dmat) 435 bus_dma_tag_destroy(sc->aac_parent_dmat); 436 437 /* release the register window mapping */ 438 if (sc->aac_regs_resource != NULL) 439 bus_release_resource(sc->aac_dev, SYS_RES_MEMORY, 440 sc->aac_regs_rid, sc->aac_regs_resource); 441 } 442 443 /* 444 * Disconnect from the controller completely, in preparation for unload. 445 */ 446 int 447 aac_detach(device_t dev) 448 { 449 struct aac_softc *sc; 450 struct aac_container *co; 451 struct aac_sim *sim; 452 int error; 453 454 debug_called(1); 455 456 sc = device_get_softc(dev); 457 458 if (sc->aac_state & AAC_STATE_OPEN) 459 return(EBUSY); 460 461 /* Remove the child containers */ 462 while ((co = TAILQ_FIRST(&sc->aac_container_tqh)) != NULL) { 463 error = device_delete_child(dev, co->co_disk); 464 if (error) 465 return (error); 466 TAILQ_REMOVE(&sc->aac_container_tqh, co, co_link); 467 free(co, M_AACBUF); 468 } 469 470 /* Remove the CAM SIMs */ 471 while ((sim = TAILQ_FIRST(&sc->aac_sim_tqh)) != NULL) { 472 TAILQ_REMOVE(&sc->aac_sim_tqh, sim, sim_link); 473 error = device_delete_child(dev, sim->sim_dev); 474 if (error) 475 return (error); 476 free(sim, M_AACBUF); 477 } 478 479 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) { 480 sc->aifflags |= AAC_AIFFLAGS_EXIT; 481 wakeup(sc->aifthread); 482 tsleep(sc->aac_dev, PUSER | PCATCH, "aacdch", 30 * hz); 483 } 484 485 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) 486 panic("Cannot shutdown AIF thread\n"); 487 488 if ((error = aac_shutdown(dev))) 489 return(error); 490 491 EVENTHANDLER_DEREGISTER(shutdown_final, sc->eh); 492 493 aac_free(sc); 494 495 return(0); 496 } 497 498 /* 499 * Bring the controller down to a dormant state and detach all child devices. 500 * 501 * This function is called before detach or system shutdown. 502 * 503 * Note that we can assume that the bioq on the controller is empty, as we won't 504 * allow shutdown if any device is open. 505 */ 506 int 507 aac_shutdown(device_t dev) 508 { 509 struct aac_softc *sc; 510 struct aac_fib *fib; 511 struct aac_close_command *cc; 512 513 debug_called(1); 514 515 sc = device_get_softc(dev); 516 517 sc->aac_state |= AAC_STATE_SUSPEND; 518 519 /* 520 * Send a Container shutdown followed by a HostShutdown FIB to the 521 * controller to convince it that we don't want to talk to it anymore. 522 * We've been closed and all I/O completed already 523 */ 524 device_printf(sc->aac_dev, "shutting down controller..."); 525 526 aac_alloc_sync_fib(sc, &fib, AAC_SYNC_LOCK_FORCE); 527 cc = (struct aac_close_command *)&fib->data[0]; 528 529 bzero(cc, sizeof(struct aac_close_command)); 530 cc->Command = VM_CloseAll; 531 cc->ContainerId = 0xffffffff; 532 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 533 sizeof(struct aac_close_command))) 534 printf("FAILED.\n"); 535 else 536 printf("done\n"); 537 #if 0 538 else { 539 fib->data[0] = 0; 540 /* 541 * XXX Issuing this command to the controller makes it shut down 542 * but also keeps it from coming back up without a reset of the 543 * PCI bus. This is not desirable if you are just unloading the 544 * driver module with the intent to reload it later. 545 */ 546 if (aac_sync_fib(sc, FsaHostShutdown, AAC_FIBSTATE_SHUTDOWN, 547 fib, 1)) { 548 printf("FAILED.\n"); 549 } else { 550 printf("done.\n"); 551 } 552 } 553 #endif 554 555 AAC_MASK_INTERRUPTS(sc); 556 557 return(0); 558 } 559 560 /* 561 * Bring the controller to a quiescent state, ready for system suspend. 562 */ 563 int 564 aac_suspend(device_t dev) 565 { 566 struct aac_softc *sc; 567 568 debug_called(1); 569 570 sc = device_get_softc(dev); 571 572 sc->aac_state |= AAC_STATE_SUSPEND; 573 574 AAC_MASK_INTERRUPTS(sc); 575 return(0); 576 } 577 578 /* 579 * Bring the controller back to a state ready for operation. 580 */ 581 int 582 aac_resume(device_t dev) 583 { 584 struct aac_softc *sc; 585 586 debug_called(1); 587 588 sc = device_get_softc(dev); 589 590 sc->aac_state &= ~AAC_STATE_SUSPEND; 591 AAC_UNMASK_INTERRUPTS(sc); 592 return(0); 593 } 594 595 /* 596 * Take an interrupt. 597 */ 598 void 599 aac_intr(void *arg) 600 { 601 struct aac_softc *sc; 602 u_int32_t *resp_queue; 603 u_int16_t reason; 604 605 debug_called(2); 606 607 sc = (struct aac_softc *)arg; 608 609 /* 610 * Optimize the common case of adapter response interrupts. 611 * We must read from the card prior to processing the responses 612 * to ensure the clear is flushed prior to accessing the queues. 613 * Reading the queues from local memory might save us a PCI read. 614 */ 615 resp_queue = sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE]; 616 if (resp_queue[AAC_PRODUCER_INDEX] != resp_queue[AAC_CONSUMER_INDEX]) 617 reason = AAC_DB_RESPONSE_READY; 618 else 619 reason = AAC_GET_ISTATUS(sc); 620 AAC_CLEAR_ISTATUS(sc, reason); 621 (void)AAC_GET_ISTATUS(sc); 622 623 /* It's not ok to return here because of races with the previous step */ 624 if (reason & AAC_DB_RESPONSE_READY) 625 /* handle completion processing */ 626 taskqueue_enqueue(taskqueue_swi, &sc->aac_task_complete); 627 628 /* controller wants to talk to the log */ 629 if (reason & AAC_DB_PRINTF) { 630 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) { 631 sc->aifflags |= AAC_AIFFLAGS_PRINTF; 632 } else 633 aac_print_printf(sc); 634 } 635 636 /* controller has a message for us? */ 637 if (reason & AAC_DB_COMMAND_READY) { 638 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) { 639 sc->aifflags |= AAC_AIFFLAGS_AIF; 640 } else { 641 /* 642 * XXX If the kthread is dead and we're at this point, 643 * there are bigger problems than just figuring out 644 * what to do with an AIF. 645 */ 646 } 647 648 } 649 650 if ((sc->aifflags & AAC_AIFFLAGS_PENDING) != 0) 651 /* XXX Should this be done with cv_signal? */ 652 wakeup(sc->aifthread); 653 } 654 655 /* 656 * Command Processing 657 */ 658 659 /* 660 * Start as much queued I/O as possible on the controller 661 */ 662 void 663 aac_startio(struct aac_softc *sc) 664 { 665 struct aac_command *cm; 666 667 debug_called(2); 668 669 for (;;) { 670 /* 671 * Try to get a command that's been put off for lack of 672 * resources 673 */ 674 cm = aac_dequeue_ready(sc); 675 676 /* 677 * Try to build a command off the bio queue (ignore error 678 * return) 679 */ 680 if (cm == NULL) 681 aac_bio_command(sc, &cm); 682 683 /* nothing to do? */ 684 if (cm == NULL) 685 break; 686 687 /* try to give the command to the controller */ 688 if (aac_start(cm) == EBUSY) { 689 /* put it on the ready queue for later */ 690 aac_requeue_ready(cm); 691 break; 692 } 693 } 694 } 695 696 /* 697 * Deliver a command to the controller; allocate controller resources at the 698 * last moment when possible. 699 */ 700 static int 701 aac_start(struct aac_command *cm) 702 { 703 struct aac_softc *sc; 704 int error; 705 706 debug_called(2); 707 708 sc = cm->cm_sc; 709 710 /* get the command mapped */ 711 aac_map_command(cm); 712 713 /* Fix up the address values in the FIB. Use the command array index 714 * instead of a pointer since these fields are only 32 bits. Shift 715 * the SenderFibAddress over to make room for the fast response bit. 716 */ 717 cm->cm_fib->Header.SenderFibAddress = (cm->cm_index << 1); 718 cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys; 719 720 /* save a pointer to the command for speedy reverse-lookup */ 721 cm->cm_fib->Header.SenderData = cm->cm_index; 722 /* put the FIB on the outbound queue */ 723 error = aac_enqueue_fib(sc, cm->cm_queue, cm); 724 return(error); 725 } 726 727 /* 728 * Handle notification of one or more FIBs coming from the controller. 729 */ 730 static void 731 aac_command_thread(struct aac_softc *sc) 732 { 733 struct aac_fib *fib; 734 u_int32_t fib_size; 735 int size; 736 737 debug_called(2); 738 739 sc->aifflags |= AAC_AIFFLAGS_RUNNING; 740 741 while (!(sc->aifflags & AAC_AIFFLAGS_EXIT)) { 742 if ((sc->aifflags & AAC_AIFFLAGS_PENDING) == 0) 743 tsleep(sc->aifthread, PRIBIO, "aifthd", 744 AAC_PERIODIC_INTERVAL * hz); 745 746 if ((sc->aifflags & AAC_AIFFLAGS_PENDING) == 0) 747 aac_timeout(sc); 748 749 /* Check the hardware printf message buffer */ 750 if ((sc->aifflags & AAC_AIFFLAGS_PRINTF) != 0) { 751 sc->aifflags &= ~AAC_AIFFLAGS_PRINTF; 752 aac_print_printf(sc); 753 } 754 755 /* See if any FIBs need to be allocated */ 756 if ((sc->aifflags & AAC_AIFFLAGS_ALLOCFIBS) != 0) { 757 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 758 aac_alloc_commands(sc); 759 sc->aifflags &= ~AAC_AIFFLAGS_ALLOCFIBS; 760 AAC_LOCK_RELEASE(&sc->aac_io_lock); 761 } 762 763 /* While we're here, check to see if any commands are stuck */ 764 while (sc->aifflags & AAC_AIFFLAGS_AIF) { 765 if (aac_dequeue_fib(sc, AAC_HOST_NORM_CMD_QUEUE, 766 &fib_size, &fib)) { 767 sc->aifflags &= ~AAC_AIFFLAGS_AIF; 768 break; /* nothing to do */ 769 } 770 771 AAC_PRINT_FIB(sc, fib); 772 773 switch (fib->Header.Command) { 774 case AifRequest: 775 aac_handle_aif(sc, fib); 776 break; 777 default: 778 device_printf(sc->aac_dev, "unknown command " 779 "from controller\n"); 780 break; 781 } 782 783 if ((fib->Header.XferState == 0) || 784 (fib->Header.StructType != AAC_FIBTYPE_TFIB)) 785 break; 786 787 /* Return the AIF to the controller. */ 788 if (fib->Header.XferState & AAC_FIBSTATE_FROMADAP) { 789 fib->Header.XferState |= AAC_FIBSTATE_DONEHOST; 790 *(AAC_FSAStatus*)fib->data = ST_OK; 791 792 /* XXX Compute the Size field? */ 793 size = fib->Header.Size; 794 if (size > sizeof(struct aac_fib)) { 795 size = sizeof(struct aac_fib); 796 fib->Header.Size = size; 797 } 798 /* 799 * Since we did not generate this command, it 800 * cannot go through the normal 801 * enqueue->startio chain. 802 */ 803 aac_enqueue_response(sc, 804 AAC_ADAP_NORM_RESP_QUEUE, 805 fib); 806 } 807 } 808 } 809 sc->aifflags &= ~AAC_AIFFLAGS_RUNNING; 810 wakeup(sc->aac_dev); 811 812 mtx_lock(&Giant); 813 kthread_exit(0); 814 } 815 816 /* 817 * Process completed commands. 818 */ 819 static void 820 aac_complete(void *context, int pending) 821 { 822 struct aac_softc *sc; 823 struct aac_command *cm; 824 struct aac_fib *fib; 825 u_int32_t fib_size; 826 827 debug_called(2); 828 829 sc = (struct aac_softc *)context; 830 831 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 832 833 /* pull completed commands off the queue */ 834 for (;;) { 835 /* look for completed FIBs on our queue */ 836 if (aac_dequeue_fib(sc, AAC_HOST_NORM_RESP_QUEUE, &fib_size, 837 &fib)) 838 break; /* nothing to do */ 839 840 /* get the command, unmap and queue for later processing */ 841 cm = sc->aac_commands + fib->Header.SenderData; 842 if (cm == NULL) { 843 AAC_PRINT_FIB(sc, fib); 844 break; 845 } 846 847 aac_remove_busy(cm); 848 aac_unmap_command(cm); /* XXX defer? */ 849 cm->cm_flags |= AAC_CMD_COMPLETED; 850 851 /* is there a completion handler? */ 852 if (cm->cm_complete != NULL) { 853 cm->cm_complete(cm); 854 } else { 855 /* assume that someone is sleeping on this command */ 856 wakeup(cm); 857 } 858 } 859 860 /* see if we can start some more I/O */ 861 aac_startio(sc); 862 863 AAC_LOCK_RELEASE(&sc->aac_io_lock); 864 } 865 866 /* 867 * Handle a bio submitted from a disk device. 868 */ 869 void 870 aac_submit_bio(struct bio *bp) 871 { 872 struct aac_disk *ad; 873 struct aac_softc *sc; 874 875 debug_called(2); 876 877 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 878 sc = ad->ad_controller; 879 880 /* queue the BIO and try to get some work done */ 881 aac_enqueue_bio(sc, bp); 882 aac_startio(sc); 883 } 884 885 /* 886 * Get a bio and build a command to go with it. 887 */ 888 static int 889 aac_bio_command(struct aac_softc *sc, struct aac_command **cmp) 890 { 891 struct aac_command *cm; 892 struct aac_fib *fib; 893 struct aac_disk *ad; 894 struct bio *bp; 895 896 debug_called(2); 897 898 /* get the resources we will need */ 899 cm = NULL; 900 if ((bp = aac_dequeue_bio(sc)) == NULL) 901 goto fail; 902 if (aac_alloc_command(sc, &cm)) /* get a command */ 903 goto fail; 904 905 /* fill out the command */ 906 cm->cm_data = (void *)bp->bio_data; 907 cm->cm_datalen = bp->bio_bcount; 908 cm->cm_complete = aac_bio_complete; 909 cm->cm_private = bp; 910 cm->cm_timestamp = time_second; 911 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 912 913 /* build the FIB */ 914 fib = cm->cm_fib; 915 fib->Header.Size = sizeof(struct aac_fib_header); 916 fib->Header.XferState = 917 AAC_FIBSTATE_HOSTOWNED | 918 AAC_FIBSTATE_INITIALISED | 919 AAC_FIBSTATE_EMPTY | 920 AAC_FIBSTATE_FROMHOST | 921 AAC_FIBSTATE_REXPECTED | 922 AAC_FIBSTATE_NORM | 923 AAC_FIBSTATE_ASYNC | 924 AAC_FIBSTATE_FAST_RESPONSE; 925 926 /* build the read/write request */ 927 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 928 929 if ((sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 930 fib->Header.Command = ContainerCommand; 931 if (bp->bio_cmd == BIO_READ) { 932 struct aac_blockread *br; 933 br = (struct aac_blockread *)&fib->data[0]; 934 br->Command = VM_CtBlockRead; 935 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 936 br->BlockNumber = bp->bio_pblkno; 937 br->ByteCount = bp->bio_bcount; 938 fib->Header.Size += sizeof(struct aac_blockread); 939 cm->cm_sgtable = &br->SgMap; 940 cm->cm_flags |= AAC_CMD_DATAIN; 941 } else { 942 struct aac_blockwrite *bw; 943 bw = (struct aac_blockwrite *)&fib->data[0]; 944 bw->Command = VM_CtBlockWrite; 945 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 946 bw->BlockNumber = bp->bio_pblkno; 947 bw->ByteCount = bp->bio_bcount; 948 bw->Stable = CUNSTABLE; 949 fib->Header.Size += sizeof(struct aac_blockwrite); 950 cm->cm_flags |= AAC_CMD_DATAOUT; 951 cm->cm_sgtable = &bw->SgMap; 952 } 953 } else { 954 fib->Header.Command = ContainerCommand64; 955 if (bp->bio_cmd == BIO_READ) { 956 struct aac_blockread64 *br; 957 br = (struct aac_blockread64 *)&fib->data[0]; 958 br->Command = VM_CtHostRead64; 959 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 960 br->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 961 br->BlockNumber = bp->bio_pblkno; 962 br->Pad = 0; 963 br->Flags = 0; 964 fib->Header.Size += sizeof(struct aac_blockread64); 965 cm->cm_flags |= AAC_CMD_DATAOUT; 966 (struct aac_sg_table64 *)cm->cm_sgtable = &br->SgMap64; 967 } else { 968 struct aac_blockwrite64 *bw; 969 bw = (struct aac_blockwrite64 *)&fib->data[0]; 970 bw->Command = VM_CtHostWrite64; 971 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 972 bw->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 973 bw->BlockNumber = bp->bio_pblkno; 974 bw->Pad = 0; 975 bw->Flags = 0; 976 fib->Header.Size += sizeof(struct aac_blockwrite64); 977 cm->cm_flags |= AAC_CMD_DATAIN; 978 (struct aac_sg_table64 *)cm->cm_sgtable = &bw->SgMap64; 979 } 980 } 981 982 *cmp = cm; 983 return(0); 984 985 fail: 986 if (bp != NULL) 987 aac_enqueue_bio(sc, bp); 988 if (cm != NULL) 989 aac_release_command(cm); 990 return(ENOMEM); 991 } 992 993 /* 994 * Handle a bio-instigated command that has been completed. 995 */ 996 static void 997 aac_bio_complete(struct aac_command *cm) 998 { 999 struct aac_blockread_response *brr; 1000 struct aac_blockwrite_response *bwr; 1001 struct bio *bp; 1002 AAC_FSAStatus status; 1003 1004 /* fetch relevant status and then release the command */ 1005 bp = (struct bio *)cm->cm_private; 1006 if (bp->bio_cmd == BIO_READ) { 1007 brr = (struct aac_blockread_response *)&cm->cm_fib->data[0]; 1008 status = brr->Status; 1009 } else { 1010 bwr = (struct aac_blockwrite_response *)&cm->cm_fib->data[0]; 1011 status = bwr->Status; 1012 } 1013 aac_release_command(cm); 1014 1015 /* fix up the bio based on status */ 1016 if (status == ST_OK) { 1017 bp->bio_resid = 0; 1018 } else { 1019 bp->bio_error = EIO; 1020 bp->bio_flags |= BIO_ERROR; 1021 /* pass an error string out to the disk layer */ 1022 bp->bio_driver1 = aac_describe_code(aac_command_status_table, 1023 status); 1024 } 1025 aac_biodone(bp); 1026 } 1027 1028 /* 1029 * Submit a command to the controller, return when it completes. 1030 * XXX This is very dangerous! If the card has gone out to lunch, we could 1031 * be stuck here forever. At the same time, signals are not caught 1032 * because there is a risk that a signal could wakeup the tsleep before 1033 * the card has a chance to complete the command. The passed in timeout 1034 * is ignored for the same reason. Since there is no way to cancel a 1035 * command in progress, we should probably create a 'dead' queue where 1036 * commands go that have been interrupted/timed-out/etc, that keeps them 1037 * out of the free pool. That way, if the card is just slow, it won't 1038 * spam the memory of a command that has been recycled. 1039 */ 1040 static int 1041 aac_wait_command(struct aac_command *cm, int timeout) 1042 { 1043 struct aac_softc *sc; 1044 int error = 0; 1045 1046 debug_called(2); 1047 1048 sc = cm->cm_sc; 1049 1050 /* Put the command on the ready queue and get things going */ 1051 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 1052 aac_enqueue_ready(cm); 1053 aac_startio(sc); 1054 while (!(cm->cm_flags & AAC_CMD_COMPLETED) && (error != EWOULDBLOCK)) { 1055 error = msleep(cm, &sc->aac_io_lock, PRIBIO, "aacwait", 0); 1056 } 1057 return(error); 1058 } 1059 1060 /* 1061 *Command Buffer Management 1062 */ 1063 1064 /* 1065 * Allocate a command. 1066 */ 1067 int 1068 aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp) 1069 { 1070 struct aac_command *cm; 1071 1072 debug_called(3); 1073 1074 if ((cm = aac_dequeue_free(sc)) == NULL) { 1075 if (sc->total_fibs < sc->aac_max_fibs) { 1076 sc->aifflags |= AAC_AIFFLAGS_ALLOCFIBS; 1077 wakeup(sc->aifthread); 1078 } 1079 return (EBUSY); 1080 } 1081 1082 *cmp = cm; 1083 return(0); 1084 } 1085 1086 /* 1087 * Release a command back to the freelist. 1088 */ 1089 void 1090 aac_release_command(struct aac_command *cm) 1091 { 1092 debug_called(3); 1093 1094 /* (re)initialise the command/FIB */ 1095 cm->cm_sgtable = NULL; 1096 cm->cm_flags = 0; 1097 cm->cm_complete = NULL; 1098 cm->cm_private = NULL; 1099 cm->cm_fib->Header.XferState = AAC_FIBSTATE_EMPTY; 1100 cm->cm_fib->Header.StructType = AAC_FIBTYPE_TFIB; 1101 cm->cm_fib->Header.Flags = 0; 1102 cm->cm_fib->Header.SenderSize = sizeof(struct aac_fib); 1103 1104 /* 1105 * These are duplicated in aac_start to cover the case where an 1106 * intermediate stage may have destroyed them. They're left 1107 * initialised here for debugging purposes only. 1108 */ 1109 cm->cm_fib->Header.SenderFibAddress = (u_int32_t)cm->cm_fib; 1110 cm->cm_fib->Header.ReceiverFibAddress = (u_int32_t)cm->cm_fibphys; 1111 cm->cm_fib->Header.SenderData = 0; 1112 1113 aac_enqueue_free(cm); 1114 } 1115 1116 /* 1117 * Map helper for command/FIB allocation. 1118 */ 1119 static void 1120 aac_map_command_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1121 { 1122 uint32_t *fibphys; 1123 1124 fibphys = (uint32_t *)arg; 1125 1126 debug_called(3); 1127 1128 *fibphys = segs[0].ds_addr; 1129 } 1130 1131 /* 1132 * Allocate and initialise commands/FIBs for this adapter. 1133 */ 1134 static int 1135 aac_alloc_commands(struct aac_softc *sc) 1136 { 1137 struct aac_command *cm; 1138 struct aac_fibmap *fm; 1139 uint32_t fibphys; 1140 int i, error; 1141 1142 debug_called(2); 1143 1144 if (sc->total_fibs + AAC_FIB_COUNT > sc->aac_max_fibs) 1145 return (ENOMEM); 1146 1147 fm = malloc(sizeof(struct aac_fibmap), M_AACBUF, M_NOWAIT|M_ZERO); 1148 if (fm == NULL) 1149 return (ENOMEM); 1150 1151 /* allocate the FIBs in DMAable memory and load them */ 1152 if (bus_dmamem_alloc(sc->aac_fib_dmat, (void **)&fm->aac_fibs, 1153 BUS_DMA_NOWAIT, &fm->aac_fibmap)) { 1154 device_printf(sc->aac_dev, 1155 "Not enough contiguous memory available.\n"); 1156 free(fm, M_AACBUF); 1157 return (ENOMEM); 1158 } 1159 1160 bus_dmamap_load(sc->aac_fib_dmat, fm->aac_fibmap, fm->aac_fibs, 1161 AAC_FIB_COUNT * sizeof(struct aac_fib), 1162 aac_map_command_helper, &fibphys, 0); 1163 1164 /* initialise constant fields in the command structure */ 1165 bzero(fm->aac_fibs, AAC_FIB_COUNT * sizeof(struct aac_fib)); 1166 for (i = 0; i < AAC_FIB_COUNT; i++) { 1167 cm = sc->aac_commands + sc->total_fibs; 1168 fm->aac_commands = cm; 1169 cm->cm_sc = sc; 1170 cm->cm_fib = fm->aac_fibs + i; 1171 cm->cm_fibphys = fibphys + (i * sizeof(struct aac_fib)); 1172 cm->cm_index = sc->total_fibs; 1173 1174 if ((error = bus_dmamap_create(sc->aac_buffer_dmat, 0, 1175 &cm->cm_datamap)) == 0) 1176 aac_release_command(cm); 1177 else 1178 break; 1179 sc->total_fibs++; 1180 } 1181 1182 if (i > 0) { 1183 TAILQ_INSERT_TAIL(&sc->aac_fibmap_tqh, fm, fm_link); 1184 debug(1, "total_fibs= %d\n", sc->total_fibs); 1185 return (0); 1186 } 1187 1188 bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap); 1189 bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap); 1190 free(fm, M_AACBUF); 1191 return (ENOMEM); 1192 } 1193 1194 /* 1195 * Free FIBs owned by this adapter. 1196 */ 1197 static void 1198 aac_free_commands(struct aac_softc *sc) 1199 { 1200 struct aac_fibmap *fm; 1201 struct aac_command *cm; 1202 int i; 1203 1204 debug_called(1); 1205 1206 while ((fm = TAILQ_FIRST(&sc->aac_fibmap_tqh)) != NULL) { 1207 1208 TAILQ_REMOVE(&sc->aac_fibmap_tqh, fm, fm_link); 1209 /* 1210 * We check against total_fibs to handle partially 1211 * allocated blocks. 1212 */ 1213 for (i = 0; i < AAC_FIB_COUNT && sc->total_fibs--; i++) { 1214 cm = fm->aac_commands + i; 1215 bus_dmamap_destroy(sc->aac_buffer_dmat, cm->cm_datamap); 1216 } 1217 bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap); 1218 bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap); 1219 free(fm, M_AACBUF); 1220 } 1221 } 1222 1223 /* 1224 * Command-mapping helper function - populate this command's s/g table. 1225 */ 1226 static void 1227 aac_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1228 { 1229 struct aac_command *cm; 1230 struct aac_fib *fib; 1231 int i; 1232 1233 debug_called(3); 1234 1235 cm = (struct aac_command *)arg; 1236 fib = cm->cm_fib; 1237 1238 /* copy into the FIB */ 1239 if (cm->cm_sgtable != NULL) { 1240 if ((cm->cm_sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 1241 struct aac_sg_table *sg; 1242 sg = cm->cm_sgtable; 1243 sg->SgCount = nseg; 1244 for (i = 0; i < nseg; i++) { 1245 sg->SgEntry[i].SgAddress = segs[i].ds_addr; 1246 sg->SgEntry[i].SgByteCount = segs[i].ds_len; 1247 } 1248 /* update the FIB size for the s/g count */ 1249 fib->Header.Size += nseg * sizeof(struct aac_sg_entry); 1250 } else { 1251 struct aac_sg_table64 *sg; 1252 sg = (struct aac_sg_table64 *)cm->cm_sgtable; 1253 sg->SgCount = nseg; 1254 for (i = 0; i < nseg; i++) { 1255 sg->SgEntry64[i].SgAddress = segs[i].ds_addr; 1256 sg->SgEntry64[i].SgByteCount = segs[i].ds_len; 1257 } 1258 /* update the FIB size for the s/g count */ 1259 fib->Header.Size += nseg*sizeof(struct aac_sg_entry64); 1260 } 1261 } 1262 } 1263 1264 /* 1265 * Map a command into controller-visible space. 1266 */ 1267 static void 1268 aac_map_command(struct aac_command *cm) 1269 { 1270 struct aac_softc *sc; 1271 1272 debug_called(2); 1273 1274 sc = cm->cm_sc; 1275 1276 /* don't map more than once */ 1277 if (cm->cm_flags & AAC_CMD_MAPPED) 1278 return; 1279 1280 if (cm->cm_datalen != 0) { 1281 bus_dmamap_load(sc->aac_buffer_dmat, cm->cm_datamap, 1282 cm->cm_data, cm->cm_datalen, 1283 aac_map_command_sg, cm, 0); 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 } 1292 cm->cm_flags |= AAC_CMD_MAPPED; 1293 } 1294 1295 /* 1296 * Unmap a command from controller-visible space. 1297 */ 1298 static void 1299 aac_unmap_command(struct aac_command *cm) 1300 { 1301 struct aac_softc *sc; 1302 1303 debug_called(2); 1304 1305 sc = cm->cm_sc; 1306 1307 if (!(cm->cm_flags & AAC_CMD_MAPPED)) 1308 return; 1309 1310 if (cm->cm_datalen != 0) { 1311 if (cm->cm_flags & AAC_CMD_DATAIN) 1312 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1313 BUS_DMASYNC_POSTREAD); 1314 if (cm->cm_flags & AAC_CMD_DATAOUT) 1315 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1316 BUS_DMASYNC_POSTWRITE); 1317 1318 bus_dmamap_unload(sc->aac_buffer_dmat, cm->cm_datamap); 1319 } 1320 cm->cm_flags &= ~AAC_CMD_MAPPED; 1321 } 1322 1323 /* 1324 * Hardware Interface 1325 */ 1326 1327 /* 1328 * Initialise the adapter. 1329 */ 1330 static void 1331 aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1332 { 1333 struct aac_softc *sc; 1334 1335 debug_called(1); 1336 1337 sc = (struct aac_softc *)arg; 1338 1339 sc->aac_common_busaddr = segs[0].ds_addr; 1340 } 1341 1342 static int 1343 aac_check_firmware(struct aac_softc *sc) 1344 { 1345 u_int32_t major, minor, options; 1346 1347 debug_called(1); 1348 1349 /* 1350 * Retrieve the firmware version numbers. Dell PERC2/QC cards with 1351 * firmware version 1.x are not compatible with this driver. 1352 */ 1353 if (sc->flags & AAC_FLAGS_PERC2QC) { 1354 if (aac_sync_command(sc, AAC_MONKER_GETKERNVER, 0, 0, 0, 0, 1355 NULL)) { 1356 device_printf(sc->aac_dev, 1357 "Error reading firmware version\n"); 1358 return (EIO); 1359 } 1360 1361 /* These numbers are stored as ASCII! */ 1362 major = (AAC_GET_MAILBOX(sc, 1) & 0xff) - 0x30; 1363 minor = (AAC_GET_MAILBOX(sc, 2) & 0xff) - 0x30; 1364 if (major == 1) { 1365 device_printf(sc->aac_dev, 1366 "Firmware version %d.%d is not supported.\n", 1367 major, minor); 1368 return (EINVAL); 1369 } 1370 } 1371 1372 /* 1373 * Retrieve the capabilities/supported options word so we know what 1374 * work-arounds to enable. 1375 */ 1376 if (aac_sync_command(sc, AAC_MONKER_GETINFO, 0, 0, 0, 0, NULL)) { 1377 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 1378 return (EIO); 1379 } 1380 options = AAC_GET_MAILBOX(sc, 1); 1381 sc->supported_options = options; 1382 1383 if ((options & AAC_SUPPORTED_4GB_WINDOW) != 0 && 1384 (sc->flags & AAC_FLAGS_NO4GB) == 0) 1385 sc->flags |= AAC_FLAGS_4GB_WINDOW; 1386 if (options & AAC_SUPPORTED_NONDASD) 1387 sc->flags |= AAC_FLAGS_ENABLE_CAM; 1388 if ((options & AAC_SUPPORTED_SGMAP_HOST64) != 0 && (sizeof(bus_addr_t) > 4)) { 1389 device_printf(sc->aac_dev, "Enabling 64-bit address support\n"); 1390 sc->flags |= AAC_FLAGS_SG_64BIT; 1391 } 1392 1393 /* Check for broken hardware that does a lower number of commands */ 1394 if ((sc->flags & AAC_FLAGS_256FIBS) == 0) 1395 sc->aac_max_fibs = AAC_MAX_FIBS; 1396 else 1397 sc->aac_max_fibs = 256; 1398 1399 return (0); 1400 } 1401 1402 static int 1403 aac_init(struct aac_softc *sc) 1404 { 1405 struct aac_adapter_init *ip; 1406 time_t then; 1407 u_int32_t code; 1408 u_int8_t *qaddr; 1409 int error; 1410 1411 debug_called(1); 1412 1413 /* 1414 * First wait for the adapter to come ready. 1415 */ 1416 then = time_second; 1417 do { 1418 code = AAC_GET_FWSTATUS(sc); 1419 if (code & AAC_SELF_TEST_FAILED) { 1420 device_printf(sc->aac_dev, "FATAL: selftest failed\n"); 1421 return(ENXIO); 1422 } 1423 if (code & AAC_KERNEL_PANIC) { 1424 device_printf(sc->aac_dev, 1425 "FATAL: controller kernel panic\n"); 1426 return(ENXIO); 1427 } 1428 if (time_second > (then + AAC_BOOT_TIMEOUT)) { 1429 device_printf(sc->aac_dev, 1430 "FATAL: controller not coming ready, " 1431 "status %x\n", code); 1432 return(ENXIO); 1433 } 1434 } while (!(code & AAC_UP_AND_RUNNING)); 1435 1436 error = ENOMEM; 1437 /* 1438 * Create DMA tag for mapping buffers into controller-addressable space. 1439 */ 1440 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1441 1, 0, /* algnmnt, boundary */ 1442 (sc->flags & AAC_FLAGS_SG_64BIT) ? 1443 BUS_SPACE_MAXADDR : 1444 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 1445 BUS_SPACE_MAXADDR, /* highaddr */ 1446 NULL, NULL, /* filter, filterarg */ 1447 MAXBSIZE, /* maxsize */ 1448 AAC_MAXSGENTRIES, /* nsegments */ 1449 MAXBSIZE, /* maxsegsize */ 1450 BUS_DMA_ALLOCNOW, /* flags */ 1451 &sc->aac_buffer_dmat)) { 1452 device_printf(sc->aac_dev, "can't allocate buffer DMA tag\n"); 1453 goto out; 1454 } 1455 1456 /* 1457 * Create DMA tag for mapping FIBs into controller-addressable space.. 1458 */ 1459 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1460 1, 0, /* algnmnt, boundary */ 1461 (sc->flags & AAC_FLAGS_4GB_WINDOW) ? 1462 BUS_SPACE_MAXADDR_32BIT : 1463 0x7fffffff, /* lowaddr */ 1464 BUS_SPACE_MAXADDR, /* highaddr */ 1465 NULL, NULL, /* filter, filterarg */ 1466 AAC_FIB_COUNT * 1467 sizeof(struct aac_fib), /* maxsize */ 1468 1, /* nsegments */ 1469 AAC_FIB_COUNT * 1470 sizeof(struct aac_fib), /* maxsegsize */ 1471 BUS_DMA_ALLOCNOW, /* flags */ 1472 &sc->aac_fib_dmat)) { 1473 device_printf(sc->aac_dev, "can't allocate FIB DMA tag\n");; 1474 goto out; 1475 } 1476 1477 /* 1478 * Create DMA tag for the common structure and allocate it. 1479 */ 1480 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1481 1, 0, /* algnmnt, boundary */ 1482 (sc->flags & AAC_FLAGS_4GB_WINDOW) ? 1483 BUS_SPACE_MAXADDR_32BIT : 1484 0x7fffffff, /* lowaddr */ 1485 BUS_SPACE_MAXADDR, /* highaddr */ 1486 NULL, NULL, /* filter, filterarg */ 1487 8192 + sizeof(struct aac_common), /* maxsize */ 1488 1, /* nsegments */ 1489 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 1490 BUS_DMA_ALLOCNOW, /* flags */ 1491 &sc->aac_common_dmat)) { 1492 device_printf(sc->aac_dev, 1493 "can't allocate common structure DMA tag\n"); 1494 goto out; 1495 } 1496 if (bus_dmamem_alloc(sc->aac_common_dmat, (void **)&sc->aac_common, 1497 BUS_DMA_NOWAIT, &sc->aac_common_dmamap)) { 1498 device_printf(sc->aac_dev, "can't allocate common structure\n"); 1499 goto out; 1500 } 1501 1502 /* 1503 * Work around a bug in the 2120 and 2200 that cannot DMA commands 1504 * below address 8192 in physical memory. 1505 * XXX If the padding is not needed, can it be put to use instead 1506 * of ignored? 1507 */ 1508 bus_dmamap_load(sc->aac_common_dmat, sc->aac_common_dmamap, 1509 sc->aac_common, 8192 + sizeof(*sc->aac_common), 1510 aac_common_map, sc, 0); 1511 1512 if (sc->aac_common_busaddr < 8192) { 1513 (uint8_t *)sc->aac_common += 8192; 1514 sc->aac_common_busaddr += 8192; 1515 } 1516 bzero(sc->aac_common, sizeof(*sc->aac_common)); 1517 1518 /* Allocate some FIBs and associated command structs */ 1519 TAILQ_INIT(&sc->aac_fibmap_tqh); 1520 sc->aac_commands = malloc(AAC_MAX_FIBS * sizeof(struct aac_command), 1521 M_AACBUF, M_WAITOK|M_ZERO); 1522 while (sc->total_fibs < AAC_PREALLOCATE_FIBS) { 1523 if (aac_alloc_commands(sc) != 0) 1524 break; 1525 } 1526 if (sc->total_fibs == 0) 1527 goto out; 1528 1529 /* 1530 * Fill in the init structure. This tells the adapter about the 1531 * physical location of various important shared data structures. 1532 */ 1533 ip = &sc->aac_common->ac_init; 1534 ip->InitStructRevision = AAC_INIT_STRUCT_REVISION; 1535 ip->MiniPortRevision = AAC_INIT_STRUCT_MINIPORT_REVISION; 1536 1537 ip->AdapterFibsPhysicalAddress = sc->aac_common_busaddr + 1538 offsetof(struct aac_common, ac_fibs); 1539 ip->AdapterFibsVirtualAddress = 0; 1540 ip->AdapterFibsSize = AAC_ADAPTER_FIBS * sizeof(struct aac_fib); 1541 ip->AdapterFibAlign = sizeof(struct aac_fib); 1542 1543 ip->PrintfBufferAddress = sc->aac_common_busaddr + 1544 offsetof(struct aac_common, ac_printf); 1545 ip->PrintfBufferSize = AAC_PRINTF_BUFSIZE; 1546 1547 /* The adapter assumes that pages are 4K in size */ 1548 ip->HostPhysMemPages = ctob(physmem) / AAC_PAGE_SIZE; 1549 ip->HostElapsedSeconds = time_second; /* reset later if invalid */ 1550 1551 /* 1552 * Initialise FIB queues. Note that it appears that the layout of the 1553 * indexes and the segmentation of the entries may be mandated by the 1554 * adapter, which is only told about the base of the queue index fields. 1555 * 1556 * The initial values of the indices are assumed to inform the adapter 1557 * of the sizes of the respective queues, and theoretically it could 1558 * work out the entire layout of the queue structures from this. We 1559 * take the easy route and just lay this area out like everyone else 1560 * does. 1561 * 1562 * The Linux driver uses a much more complex scheme whereby several 1563 * header records are kept for each queue. We use a couple of generic 1564 * list manipulation functions which 'know' the size of each list by 1565 * virtue of a table. 1566 */ 1567 qaddr = &sc->aac_common->ac_qbuf[0] + AAC_QUEUE_ALIGN; 1568 qaddr -= (u_int32_t)qaddr % AAC_QUEUE_ALIGN; 1569 sc->aac_queues = (struct aac_queue_table *)qaddr; 1570 ip->CommHeaderAddress = sc->aac_common_busaddr + 1571 ((u_int32_t)sc->aac_queues - 1572 (u_int32_t)sc->aac_common); 1573 1574 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1575 AAC_HOST_NORM_CMD_ENTRIES; 1576 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1577 AAC_HOST_NORM_CMD_ENTRIES; 1578 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1579 AAC_HOST_HIGH_CMD_ENTRIES; 1580 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1581 AAC_HOST_HIGH_CMD_ENTRIES; 1582 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1583 AAC_ADAP_NORM_CMD_ENTRIES; 1584 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1585 AAC_ADAP_NORM_CMD_ENTRIES; 1586 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1587 AAC_ADAP_HIGH_CMD_ENTRIES; 1588 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1589 AAC_ADAP_HIGH_CMD_ENTRIES; 1590 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1591 AAC_HOST_NORM_RESP_ENTRIES; 1592 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1593 AAC_HOST_NORM_RESP_ENTRIES; 1594 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1595 AAC_HOST_HIGH_RESP_ENTRIES; 1596 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1597 AAC_HOST_HIGH_RESP_ENTRIES; 1598 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1599 AAC_ADAP_NORM_RESP_ENTRIES; 1600 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1601 AAC_ADAP_NORM_RESP_ENTRIES; 1602 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1603 AAC_ADAP_HIGH_RESP_ENTRIES; 1604 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1605 AAC_ADAP_HIGH_RESP_ENTRIES; 1606 sc->aac_qentries[AAC_HOST_NORM_CMD_QUEUE] = 1607 &sc->aac_queues->qt_HostNormCmdQueue[0]; 1608 sc->aac_qentries[AAC_HOST_HIGH_CMD_QUEUE] = 1609 &sc->aac_queues->qt_HostHighCmdQueue[0]; 1610 sc->aac_qentries[AAC_ADAP_NORM_CMD_QUEUE] = 1611 &sc->aac_queues->qt_AdapNormCmdQueue[0]; 1612 sc->aac_qentries[AAC_ADAP_HIGH_CMD_QUEUE] = 1613 &sc->aac_queues->qt_AdapHighCmdQueue[0]; 1614 sc->aac_qentries[AAC_HOST_NORM_RESP_QUEUE] = 1615 &sc->aac_queues->qt_HostNormRespQueue[0]; 1616 sc->aac_qentries[AAC_HOST_HIGH_RESP_QUEUE] = 1617 &sc->aac_queues->qt_HostHighRespQueue[0]; 1618 sc->aac_qentries[AAC_ADAP_NORM_RESP_QUEUE] = 1619 &sc->aac_queues->qt_AdapNormRespQueue[0]; 1620 sc->aac_qentries[AAC_ADAP_HIGH_RESP_QUEUE] = 1621 &sc->aac_queues->qt_AdapHighRespQueue[0]; 1622 1623 /* 1624 * Do controller-type-specific initialisation 1625 */ 1626 switch (sc->aac_hwif) { 1627 case AAC_HWIF_I960RX: 1628 AAC_SETREG4(sc, AAC_RX_ODBR, ~0); 1629 break; 1630 } 1631 1632 /* 1633 * Give the init structure to the controller. 1634 */ 1635 if (aac_sync_command(sc, AAC_MONKER_INITSTRUCT, 1636 sc->aac_common_busaddr + 1637 offsetof(struct aac_common, ac_init), 0, 0, 0, 1638 NULL)) { 1639 device_printf(sc->aac_dev, 1640 "error establishing init structure\n"); 1641 error = EIO; 1642 goto out; 1643 } 1644 1645 error = 0; 1646 out: 1647 return(error); 1648 } 1649 1650 /* 1651 * Send a synchronous command to the controller and wait for a result. 1652 */ 1653 static int 1654 aac_sync_command(struct aac_softc *sc, u_int32_t command, 1655 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3, 1656 u_int32_t *sp) 1657 { 1658 time_t then; 1659 u_int32_t status; 1660 1661 debug_called(3); 1662 1663 /* populate the mailbox */ 1664 AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3); 1665 1666 /* ensure the sync command doorbell flag is cleared */ 1667 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1668 1669 /* then set it to signal the adapter */ 1670 AAC_QNOTIFY(sc, AAC_DB_SYNC_COMMAND); 1671 1672 /* spin waiting for the command to complete */ 1673 then = time_second; 1674 do { 1675 if (time_second > (then + AAC_IMMEDIATE_TIMEOUT)) { 1676 debug(1, "timed out"); 1677 return(EIO); 1678 } 1679 } while (!(AAC_GET_ISTATUS(sc) & AAC_DB_SYNC_COMMAND)); 1680 1681 /* clear the completion flag */ 1682 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1683 1684 /* get the command status */ 1685 status = AAC_GET_MAILBOX(sc, 0); 1686 if (sp != NULL) 1687 *sp = status; 1688 return(0); 1689 } 1690 1691 /* 1692 * Grab the sync fib area. 1693 */ 1694 int 1695 aac_alloc_sync_fib(struct aac_softc *sc, struct aac_fib **fib, int flags) 1696 { 1697 1698 /* 1699 * If the force flag is set, the system is shutting down, or in 1700 * trouble. Ignore the mutex. 1701 */ 1702 if (!(flags & AAC_SYNC_LOCK_FORCE)) 1703 AAC_LOCK_ACQUIRE(&sc->aac_sync_lock); 1704 1705 *fib = &sc->aac_common->ac_sync_fib; 1706 1707 return (1); 1708 } 1709 1710 /* 1711 * Release the sync fib area. 1712 */ 1713 void 1714 aac_release_sync_fib(struct aac_softc *sc) 1715 { 1716 1717 AAC_LOCK_RELEASE(&sc->aac_sync_lock); 1718 } 1719 1720 /* 1721 * Send a synchronous FIB to the controller and wait for a result. 1722 */ 1723 int 1724 aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate, 1725 struct aac_fib *fib, u_int16_t datasize) 1726 { 1727 debug_called(3); 1728 1729 if (datasize > AAC_FIB_DATASIZE) 1730 return(EINVAL); 1731 1732 /* 1733 * Set up the sync FIB 1734 */ 1735 fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED | 1736 AAC_FIBSTATE_INITIALISED | 1737 AAC_FIBSTATE_EMPTY; 1738 fib->Header.XferState |= xferstate; 1739 fib->Header.Command = command; 1740 fib->Header.StructType = AAC_FIBTYPE_TFIB; 1741 fib->Header.Size = sizeof(struct aac_fib) + datasize; 1742 fib->Header.SenderSize = sizeof(struct aac_fib); 1743 fib->Header.SenderFibAddress = (u_int32_t)fib; 1744 fib->Header.ReceiverFibAddress = sc->aac_common_busaddr + 1745 offsetof(struct aac_common, 1746 ac_sync_fib); 1747 1748 /* 1749 * Give the FIB to the controller, wait for a response. 1750 */ 1751 if (aac_sync_command(sc, AAC_MONKER_SYNCFIB, 1752 fib->Header.ReceiverFibAddress, 0, 0, 0, NULL)) { 1753 debug(2, "IO error"); 1754 return(EIO); 1755 } 1756 1757 return (0); 1758 } 1759 1760 /* 1761 * Adapter-space FIB queue manipulation 1762 * 1763 * Note that the queue implementation here is a little funky; neither the PI or 1764 * CI will ever be zero. This behaviour is a controller feature. 1765 */ 1766 static struct { 1767 int size; 1768 int notify; 1769 } aac_qinfo[] = { 1770 {AAC_HOST_NORM_CMD_ENTRIES, AAC_DB_COMMAND_NOT_FULL}, 1771 {AAC_HOST_HIGH_CMD_ENTRIES, 0}, 1772 {AAC_ADAP_NORM_CMD_ENTRIES, AAC_DB_COMMAND_READY}, 1773 {AAC_ADAP_HIGH_CMD_ENTRIES, 0}, 1774 {AAC_HOST_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_NOT_FULL}, 1775 {AAC_HOST_HIGH_RESP_ENTRIES, 0}, 1776 {AAC_ADAP_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_READY}, 1777 {AAC_ADAP_HIGH_RESP_ENTRIES, 0} 1778 }; 1779 1780 /* 1781 * Atomically insert an entry into the nominated queue, returns 0 on success or 1782 * EBUSY if the queue is full. 1783 * 1784 * Note: it would be more efficient to defer notifying the controller in 1785 * the case where we may be inserting several entries in rapid succession, 1786 * but implementing this usefully may be difficult (it would involve a 1787 * separate queue/notify interface). 1788 */ 1789 static int 1790 aac_enqueue_fib(struct aac_softc *sc, int queue, struct aac_command *cm) 1791 { 1792 u_int32_t pi, ci; 1793 int error; 1794 u_int32_t fib_size; 1795 u_int32_t fib_addr; 1796 1797 debug_called(3); 1798 1799 fib_size = cm->cm_fib->Header.Size; 1800 fib_addr = cm->cm_fib->Header.ReceiverFibAddress; 1801 1802 /* get the producer/consumer indices */ 1803 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1804 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1805 1806 /* wrap the queue? */ 1807 if (pi >= aac_qinfo[queue].size) 1808 pi = 0; 1809 1810 /* check for queue full */ 1811 if ((pi + 1) == ci) { 1812 error = EBUSY; 1813 goto out; 1814 } 1815 1816 /* populate queue entry */ 1817 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1818 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1819 1820 /* update producer index */ 1821 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1822 1823 /* 1824 * To avoid a race with its completion interrupt, place this command on 1825 * the busy queue prior to advertising it to the controller. 1826 */ 1827 aac_enqueue_busy(cm); 1828 1829 /* notify the adapter if we know how */ 1830 if (aac_qinfo[queue].notify != 0) 1831 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1832 1833 error = 0; 1834 1835 out: 1836 return(error); 1837 } 1838 1839 /* 1840 * Atomically remove one entry from the nominated queue, returns 0 on 1841 * success or ENOENT if the queue is empty. 1842 */ 1843 static int 1844 aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size, 1845 struct aac_fib **fib_addr) 1846 { 1847 u_int32_t pi, ci; 1848 u_int32_t fib_index; 1849 int error; 1850 int notify; 1851 1852 debug_called(3); 1853 1854 /* get the producer/consumer indices */ 1855 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1856 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1857 1858 /* check for queue empty */ 1859 if (ci == pi) { 1860 error = ENOENT; 1861 goto out; 1862 } 1863 1864 notify = 0; 1865 if (ci == pi + 1) 1866 notify++; 1867 1868 /* wrap the queue? */ 1869 if (ci >= aac_qinfo[queue].size) 1870 ci = 0; 1871 1872 /* fetch the entry */ 1873 *fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size; 1874 1875 switch (queue) { 1876 case AAC_HOST_NORM_CMD_QUEUE: 1877 case AAC_HOST_HIGH_CMD_QUEUE: 1878 /* 1879 * The aq_fib_addr is only 32 bits wide so it can't be counted 1880 * on to hold an address. For AIF's, the adapter assumes 1881 * that it's giving us an address into the array of AIF fibs. 1882 * Therefore, we have to convert it to an index. 1883 */ 1884 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr / 1885 sizeof(struct aac_fib); 1886 *fib_addr = &sc->aac_common->ac_fibs[fib_index]; 1887 break; 1888 1889 case AAC_HOST_NORM_RESP_QUEUE: 1890 case AAC_HOST_HIGH_RESP_QUEUE: 1891 { 1892 struct aac_command *cm; 1893 1894 /* 1895 * As above, an index is used instead of an actual address. 1896 * Gotta shift the index to account for the fast response 1897 * bit. No other correction is needed since this value was 1898 * originally provided by the driver via the SenderFibAddress 1899 * field. 1900 */ 1901 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr; 1902 cm = sc->aac_commands + (fib_index >> 1); 1903 *fib_addr = cm->cm_fib; 1904 1905 /* 1906 * Is this a fast response? If it is, update the fib fields in 1907 * local memory since the whole fib isn't DMA'd back up. 1908 */ 1909 if (fib_index & 0x01) { 1910 (*fib_addr)->Header.XferState |= AAC_FIBSTATE_DONEADAP; 1911 *((u_int32_t*)((*fib_addr)->data)) = AAC_ERROR_NORMAL; 1912 } 1913 break; 1914 } 1915 default: 1916 panic("Invalid queue in aac_dequeue_fib()"); 1917 break; 1918 } 1919 1920 /* update consumer index */ 1921 sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1; 1922 1923 /* if we have made the queue un-full, notify the adapter */ 1924 if (notify && (aac_qinfo[queue].notify != 0)) 1925 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1926 error = 0; 1927 1928 out: 1929 return(error); 1930 } 1931 1932 /* 1933 * Put our response to an Adapter Initialed Fib on the response queue 1934 */ 1935 static int 1936 aac_enqueue_response(struct aac_softc *sc, int queue, struct aac_fib *fib) 1937 { 1938 u_int32_t pi, ci; 1939 int error; 1940 u_int32_t fib_size; 1941 u_int32_t fib_addr; 1942 1943 debug_called(1); 1944 1945 /* Tell the adapter where the FIB is */ 1946 fib_size = fib->Header.Size; 1947 fib_addr = fib->Header.SenderFibAddress; 1948 fib->Header.ReceiverFibAddress = fib_addr; 1949 1950 /* get the producer/consumer indices */ 1951 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1952 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1953 1954 /* wrap the queue? */ 1955 if (pi >= aac_qinfo[queue].size) 1956 pi = 0; 1957 1958 /* check for queue full */ 1959 if ((pi + 1) == ci) { 1960 error = EBUSY; 1961 goto out; 1962 } 1963 1964 /* populate queue entry */ 1965 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1966 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1967 1968 /* update producer index */ 1969 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1970 1971 /* notify the adapter if we know how */ 1972 if (aac_qinfo[queue].notify != 0) 1973 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1974 1975 error = 0; 1976 1977 out: 1978 return(error); 1979 } 1980 1981 /* 1982 * Check for commands that have been outstanding for a suspiciously long time, 1983 * and complain about them. 1984 */ 1985 static void 1986 aac_timeout(struct aac_softc *sc) 1987 { 1988 struct aac_command *cm; 1989 time_t deadline; 1990 1991 /* 1992 * Traverse the busy command list, bitch about late commands once 1993 * only. 1994 */ 1995 deadline = time_second - AAC_CMD_TIMEOUT; 1996 TAILQ_FOREACH(cm, &sc->aac_busy, cm_link) { 1997 if ((cm->cm_timestamp < deadline) 1998 /* && !(cm->cm_flags & AAC_CMD_TIMEDOUT) */) { 1999 cm->cm_flags |= AAC_CMD_TIMEDOUT; 2000 device_printf(sc->aac_dev, 2001 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", 2002 cm, (int)(time_second-cm->cm_timestamp)); 2003 AAC_PRINT_FIB(sc, cm->cm_fib); 2004 } 2005 } 2006 2007 return; 2008 } 2009 2010 /* 2011 * Interface Function Vectors 2012 */ 2013 2014 /* 2015 * Read the current firmware status word. 2016 */ 2017 static int 2018 aac_sa_get_fwstatus(struct aac_softc *sc) 2019 { 2020 debug_called(3); 2021 2022 return(AAC_GETREG4(sc, AAC_SA_FWSTATUS)); 2023 } 2024 2025 static int 2026 aac_rx_get_fwstatus(struct aac_softc *sc) 2027 { 2028 debug_called(3); 2029 2030 return(AAC_GETREG4(sc, AAC_RX_FWSTATUS)); 2031 } 2032 2033 static int 2034 aac_fa_get_fwstatus(struct aac_softc *sc) 2035 { 2036 int val; 2037 2038 debug_called(3); 2039 2040 val = AAC_GETREG4(sc, AAC_FA_FWSTATUS); 2041 return (val); 2042 } 2043 2044 /* 2045 * Notify the controller of a change in a given queue 2046 */ 2047 2048 static void 2049 aac_sa_qnotify(struct aac_softc *sc, int qbit) 2050 { 2051 debug_called(3); 2052 2053 AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit); 2054 } 2055 2056 static void 2057 aac_rx_qnotify(struct aac_softc *sc, int qbit) 2058 { 2059 debug_called(3); 2060 2061 AAC_SETREG4(sc, AAC_RX_IDBR, qbit); 2062 } 2063 2064 static void 2065 aac_fa_qnotify(struct aac_softc *sc, int qbit) 2066 { 2067 debug_called(3); 2068 2069 AAC_SETREG2(sc, AAC_FA_DOORBELL1, qbit); 2070 AAC_FA_HACK(sc); 2071 } 2072 2073 /* 2074 * Get the interrupt reason bits 2075 */ 2076 static int 2077 aac_sa_get_istatus(struct aac_softc *sc) 2078 { 2079 debug_called(3); 2080 2081 return(AAC_GETREG2(sc, AAC_SA_DOORBELL0)); 2082 } 2083 2084 static int 2085 aac_rx_get_istatus(struct aac_softc *sc) 2086 { 2087 debug_called(3); 2088 2089 return(AAC_GETREG4(sc, AAC_RX_ODBR)); 2090 } 2091 2092 static int 2093 aac_fa_get_istatus(struct aac_softc *sc) 2094 { 2095 int val; 2096 2097 debug_called(3); 2098 2099 val = AAC_GETREG2(sc, AAC_FA_DOORBELL0); 2100 return (val); 2101 } 2102 2103 /* 2104 * Clear some interrupt reason bits 2105 */ 2106 static void 2107 aac_sa_clear_istatus(struct aac_softc *sc, int mask) 2108 { 2109 debug_called(3); 2110 2111 AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask); 2112 } 2113 2114 static void 2115 aac_rx_clear_istatus(struct aac_softc *sc, int mask) 2116 { 2117 debug_called(3); 2118 2119 AAC_SETREG4(sc, AAC_RX_ODBR, mask); 2120 } 2121 2122 static void 2123 aac_fa_clear_istatus(struct aac_softc *sc, int mask) 2124 { 2125 debug_called(3); 2126 2127 AAC_SETREG2(sc, AAC_FA_DOORBELL0_CLEAR, mask); 2128 AAC_FA_HACK(sc); 2129 } 2130 2131 /* 2132 * Populate the mailbox and set the command word 2133 */ 2134 static void 2135 aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2136 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2137 { 2138 debug_called(4); 2139 2140 AAC_SETREG4(sc, AAC_SA_MAILBOX, command); 2141 AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0); 2142 AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1); 2143 AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2); 2144 AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3); 2145 } 2146 2147 static void 2148 aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 2149 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2150 { 2151 debug_called(4); 2152 2153 AAC_SETREG4(sc, AAC_RX_MAILBOX, command); 2154 AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0); 2155 AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1); 2156 AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2); 2157 AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3); 2158 } 2159 2160 static void 2161 aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2162 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2163 { 2164 debug_called(4); 2165 2166 AAC_SETREG4(sc, AAC_FA_MAILBOX, command); 2167 AAC_FA_HACK(sc); 2168 AAC_SETREG4(sc, AAC_FA_MAILBOX + 4, arg0); 2169 AAC_FA_HACK(sc); 2170 AAC_SETREG4(sc, AAC_FA_MAILBOX + 8, arg1); 2171 AAC_FA_HACK(sc); 2172 AAC_SETREG4(sc, AAC_FA_MAILBOX + 12, arg2); 2173 AAC_FA_HACK(sc); 2174 AAC_SETREG4(sc, AAC_FA_MAILBOX + 16, arg3); 2175 AAC_FA_HACK(sc); 2176 } 2177 2178 /* 2179 * Fetch the immediate command status word 2180 */ 2181 static int 2182 aac_sa_get_mailbox(struct aac_softc *sc, int mb) 2183 { 2184 debug_called(4); 2185 2186 return(AAC_GETREG4(sc, AAC_SA_MAILBOX + (mb * 4))); 2187 } 2188 2189 static int 2190 aac_rx_get_mailbox(struct aac_softc *sc, int mb) 2191 { 2192 debug_called(4); 2193 2194 return(AAC_GETREG4(sc, AAC_RX_MAILBOX + (mb * 4))); 2195 } 2196 2197 static int 2198 aac_fa_get_mailbox(struct aac_softc *sc, int mb) 2199 { 2200 int val; 2201 2202 debug_called(4); 2203 2204 val = AAC_GETREG4(sc, AAC_FA_MAILBOX + (mb * 4)); 2205 return (val); 2206 } 2207 2208 /* 2209 * Set/clear interrupt masks 2210 */ 2211 static void 2212 aac_sa_set_interrupts(struct aac_softc *sc, int enable) 2213 { 2214 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2215 2216 if (enable) { 2217 AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2218 } else { 2219 AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0); 2220 } 2221 } 2222 2223 static void 2224 aac_rx_set_interrupts(struct aac_softc *sc, int enable) 2225 { 2226 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2227 2228 if (enable) { 2229 AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS); 2230 } else { 2231 AAC_SETREG4(sc, AAC_RX_OIMR, ~0); 2232 } 2233 } 2234 2235 static void 2236 aac_fa_set_interrupts(struct aac_softc *sc, int enable) 2237 { 2238 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2239 2240 if (enable) { 2241 AAC_SETREG2((sc), AAC_FA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2242 AAC_FA_HACK(sc); 2243 } else { 2244 AAC_SETREG2((sc), AAC_FA_MASK0, ~0); 2245 AAC_FA_HACK(sc); 2246 } 2247 } 2248 2249 /* 2250 * Debugging and Diagnostics 2251 */ 2252 2253 /* 2254 * Print some information about the controller. 2255 */ 2256 static void 2257 aac_describe_controller(struct aac_softc *sc) 2258 { 2259 struct aac_fib *fib; 2260 struct aac_adapter_info *info; 2261 2262 debug_called(2); 2263 2264 aac_alloc_sync_fib(sc, &fib, 0); 2265 2266 fib->data[0] = 0; 2267 if (aac_sync_fib(sc, RequestAdapterInfo, 0, fib, 1)) { 2268 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 2269 aac_release_sync_fib(sc); 2270 return; 2271 } 2272 info = (struct aac_adapter_info *)&fib->data[0]; 2273 2274 device_printf(sc->aac_dev, "%s %dMHz, %dMB cache memory, %s\n", 2275 aac_describe_code(aac_cpu_variant, info->CpuVariant), 2276 info->ClockSpeed, info->BufferMem / (1024 * 1024), 2277 aac_describe_code(aac_battery_platform, 2278 info->batteryPlatform)); 2279 2280 /* save the kernel revision structure for later use */ 2281 sc->aac_revision = info->KernelRevision; 2282 device_printf(sc->aac_dev, "Kernel %d.%d-%d, Build %d, S/N %6X\n", 2283 info->KernelRevision.external.comp.major, 2284 info->KernelRevision.external.comp.minor, 2285 info->KernelRevision.external.comp.dash, 2286 info->KernelRevision.buildNumber, 2287 (u_int32_t)(info->SerialNumber & 0xffffff)); 2288 2289 aac_release_sync_fib(sc); 2290 2291 if (1 || bootverbose) { 2292 device_printf(sc->aac_dev, "Supported Options=%b\n", 2293 sc->supported_options, 2294 "\20" 2295 "\1SNAPSHOT" 2296 "\2CLUSTERS" 2297 "\3WCACHE" 2298 "\4DATA64" 2299 "\5HOSTTIME" 2300 "\6RAID50" 2301 "\7WINDOW4GB" 2302 "\10SCSIUPGD" 2303 "\11SOFTERR" 2304 "\12NORECOND" 2305 "\13SGMAP64" 2306 "\14ALARM" 2307 "\15NONDASD"); 2308 } 2309 } 2310 2311 /* 2312 * Look up a text description of a numeric error code and return a pointer to 2313 * same. 2314 */ 2315 static char * 2316 aac_describe_code(struct aac_code_lookup *table, u_int32_t code) 2317 { 2318 int i; 2319 2320 for (i = 0; table[i].string != NULL; i++) 2321 if (table[i].code == code) 2322 return(table[i].string); 2323 return(table[i + 1].string); 2324 } 2325 2326 /* 2327 * Management Interface 2328 */ 2329 2330 static int 2331 aac_open(dev_t dev, int flags, int fmt, d_thread_t *td) 2332 { 2333 struct aac_softc *sc; 2334 2335 debug_called(2); 2336 2337 sc = dev->si_drv1; 2338 2339 /* Check to make sure the device isn't already open */ 2340 if (sc->aac_state & AAC_STATE_OPEN) { 2341 return EBUSY; 2342 } 2343 sc->aac_state |= AAC_STATE_OPEN; 2344 2345 return 0; 2346 } 2347 2348 static int 2349 aac_close(dev_t dev, int flags, int fmt, d_thread_t *td) 2350 { 2351 struct aac_softc *sc; 2352 2353 debug_called(2); 2354 2355 sc = dev->si_drv1; 2356 2357 /* Mark this unit as no longer open */ 2358 sc->aac_state &= ~AAC_STATE_OPEN; 2359 2360 return 0; 2361 } 2362 2363 static int 2364 aac_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, d_thread_t *td) 2365 { 2366 union aac_statrequest *as; 2367 struct aac_softc *sc; 2368 int error = 0; 2369 int i; 2370 2371 debug_called(2); 2372 2373 as = (union aac_statrequest *)arg; 2374 sc = dev->si_drv1; 2375 2376 switch (cmd) { 2377 case AACIO_STATS: 2378 switch (as->as_item) { 2379 case AACQ_FREE: 2380 case AACQ_BIO: 2381 case AACQ_READY: 2382 case AACQ_BUSY: 2383 case AACQ_COMPLETE: 2384 bcopy(&sc->aac_qstat[as->as_item], &as->as_qstat, 2385 sizeof(struct aac_qstat)); 2386 break; 2387 default: 2388 error = ENOENT; 2389 break; 2390 } 2391 break; 2392 2393 case FSACTL_SENDFIB: 2394 arg = *(caddr_t*)arg; 2395 case FSACTL_LNX_SENDFIB: 2396 debug(1, "FSACTL_SENDFIB"); 2397 error = aac_ioctl_sendfib(sc, arg); 2398 break; 2399 case FSACTL_AIF_THREAD: 2400 case FSACTL_LNX_AIF_THREAD: 2401 debug(1, "FSACTL_AIF_THREAD"); 2402 error = EINVAL; 2403 break; 2404 case FSACTL_OPEN_GET_ADAPTER_FIB: 2405 arg = *(caddr_t*)arg; 2406 case FSACTL_LNX_OPEN_GET_ADAPTER_FIB: 2407 debug(1, "FSACTL_OPEN_GET_ADAPTER_FIB"); 2408 /* 2409 * Pass the caller out an AdapterFibContext. 2410 * 2411 * Note that because we only support one opener, we 2412 * basically ignore this. Set the caller's context to a magic 2413 * number just in case. 2414 * 2415 * The Linux code hands the driver a pointer into kernel space, 2416 * and then trusts it when the caller hands it back. Aiee! 2417 * Here, we give it the proc pointer of the per-adapter aif 2418 * thread. It's only used as a sanity check in other calls. 2419 */ 2420 i = (int)sc->aifthread; 2421 error = copyout(&i, arg, sizeof(i)); 2422 break; 2423 case FSACTL_GET_NEXT_ADAPTER_FIB: 2424 arg = *(caddr_t*)arg; 2425 case FSACTL_LNX_GET_NEXT_ADAPTER_FIB: 2426 debug(1, "FSACTL_GET_NEXT_ADAPTER_FIB"); 2427 error = aac_getnext_aif(sc, arg); 2428 break; 2429 case FSACTL_CLOSE_GET_ADAPTER_FIB: 2430 case FSACTL_LNX_CLOSE_GET_ADAPTER_FIB: 2431 debug(1, "FSACTL_CLOSE_GET_ADAPTER_FIB"); 2432 /* don't do anything here */ 2433 break; 2434 case FSACTL_MINIPORT_REV_CHECK: 2435 arg = *(caddr_t*)arg; 2436 case FSACTL_LNX_MINIPORT_REV_CHECK: 2437 debug(1, "FSACTL_MINIPORT_REV_CHECK"); 2438 error = aac_rev_check(sc, arg); 2439 break; 2440 case FSACTL_QUERY_DISK: 2441 arg = *(caddr_t*)arg; 2442 case FSACTL_LNX_QUERY_DISK: 2443 debug(1, "FSACTL_QUERY_DISK"); 2444 error = aac_query_disk(sc, arg); 2445 break; 2446 case FSACTL_DELETE_DISK: 2447 case FSACTL_LNX_DELETE_DISK: 2448 /* 2449 * We don't trust the underland to tell us when to delete a 2450 * container, rather we rely on an AIF coming from the 2451 * controller 2452 */ 2453 error = 0; 2454 break; 2455 default: 2456 debug(1, "unsupported cmd 0x%lx\n", cmd); 2457 error = EINVAL; 2458 break; 2459 } 2460 return(error); 2461 } 2462 2463 static int 2464 aac_poll(dev_t dev, int poll_events, d_thread_t *td) 2465 { 2466 struct aac_softc *sc; 2467 int revents; 2468 2469 sc = dev->si_drv1; 2470 revents = 0; 2471 2472 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2473 if ((poll_events & (POLLRDNORM | POLLIN)) != 0) { 2474 if (sc->aac_aifq_tail != sc->aac_aifq_head) 2475 revents |= poll_events & (POLLIN | POLLRDNORM); 2476 } 2477 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2478 2479 if (revents == 0) { 2480 if (poll_events & (POLLIN | POLLRDNORM)) 2481 selrecord(td, &sc->rcv_select); 2482 } 2483 2484 return (revents); 2485 } 2486 2487 /* 2488 * Send a FIB supplied from userspace 2489 */ 2490 static int 2491 aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib) 2492 { 2493 struct aac_command *cm; 2494 int size, error; 2495 2496 debug_called(2); 2497 2498 cm = NULL; 2499 2500 /* 2501 * Get a command 2502 */ 2503 AAC_LOCK_ACQUIRE(&sc->aac_io_lock); 2504 if (aac_alloc_command(sc, &cm)) { 2505 error = EBUSY; 2506 goto out; 2507 } 2508 2509 /* 2510 * Fetch the FIB header, then re-copy to get data as well. 2511 */ 2512 if ((error = copyin(ufib, cm->cm_fib, 2513 sizeof(struct aac_fib_header))) != 0) 2514 goto out; 2515 size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header); 2516 if (size > sizeof(struct aac_fib)) { 2517 device_printf(sc->aac_dev, "incoming FIB oversized (%d > %d)\n", 2518 size, sizeof(struct aac_fib)); 2519 size = sizeof(struct aac_fib); 2520 } 2521 if ((error = copyin(ufib, cm->cm_fib, size)) != 0) 2522 goto out; 2523 cm->cm_fib->Header.Size = size; 2524 cm->cm_timestamp = time_second; 2525 2526 /* 2527 * Pass the FIB to the controller, wait for it to complete. 2528 */ 2529 if ((error = aac_wait_command(cm, 30)) != 0) { /* XXX user timeout? */ 2530 device_printf(sc->aac_dev, 2531 "aac_wait_command return %d\n", error); 2532 goto out; 2533 } 2534 2535 /* 2536 * Copy the FIB and data back out to the caller. 2537 */ 2538 size = cm->cm_fib->Header.Size; 2539 if (size > sizeof(struct aac_fib)) { 2540 device_printf(sc->aac_dev, "outbound FIB oversized (%d > %d)\n", 2541 size, sizeof(struct aac_fib)); 2542 size = sizeof(struct aac_fib); 2543 } 2544 error = copyout(cm->cm_fib, ufib, size); 2545 2546 out: 2547 if (cm != NULL) { 2548 aac_release_command(cm); 2549 } 2550 2551 AAC_LOCK_RELEASE(&sc->aac_io_lock); 2552 return(error); 2553 } 2554 2555 /* 2556 * Handle an AIF sent to us by the controller; queue it for later reference. 2557 * If the queue fills up, then drop the older entries. 2558 */ 2559 static void 2560 aac_handle_aif(struct aac_softc *sc, struct aac_fib *fib) 2561 { 2562 struct aac_aif_command *aif; 2563 struct aac_container *co, *co_next; 2564 struct aac_mntinfo *mi; 2565 struct aac_mntinforesp *mir = NULL; 2566 u_int16_t rsize; 2567 int next, found; 2568 int added = 0, i = 0; 2569 2570 debug_called(2); 2571 2572 aif = (struct aac_aif_command*)&fib->data[0]; 2573 aac_print_aif(sc, aif); 2574 2575 /* Is it an event that we should care about? */ 2576 switch (aif->command) { 2577 case AifCmdEventNotify: 2578 switch (aif->data.EN.type) { 2579 case AifEnAddContainer: 2580 case AifEnDeleteContainer: 2581 /* 2582 * A container was added or deleted, but the message 2583 * doesn't tell us anything else! Re-enumerate the 2584 * containers and sort things out. 2585 */ 2586 aac_alloc_sync_fib(sc, &fib, 0); 2587 mi = (struct aac_mntinfo *)&fib->data[0]; 2588 do { 2589 /* 2590 * Ask the controller for its containers one at 2591 * a time. 2592 * XXX What if the controller's list changes 2593 * midway through this enumaration? 2594 * XXX This should be done async. 2595 */ 2596 bzero(mi, sizeof(struct aac_mntinfo)); 2597 mi->Command = VM_NameServe; 2598 mi->MntType = FT_FILESYS; 2599 mi->MntCount = i; 2600 rsize = sizeof(mir); 2601 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 2602 sizeof(struct aac_mntinfo))) { 2603 debug(2, "Error probing container %d\n", 2604 i); 2605 continue; 2606 } 2607 mir = (struct aac_mntinforesp *)&fib->data[0]; 2608 /* 2609 * Check the container against our list. 2610 * co->co_found was already set to 0 in a 2611 * previous run. 2612 */ 2613 if ((mir->Status == ST_OK) && 2614 (mir->MntTable[0].VolType != CT_NONE)) { 2615 found = 0; 2616 TAILQ_FOREACH(co, 2617 &sc->aac_container_tqh, 2618 co_link) { 2619 if (co->co_mntobj.ObjectId == 2620 mir->MntTable[0].ObjectId) { 2621 co->co_found = 1; 2622 found = 1; 2623 break; 2624 } 2625 } 2626 /* 2627 * If the container matched, continue 2628 * in the list. 2629 */ 2630 if (found) { 2631 i++; 2632 continue; 2633 } 2634 2635 /* 2636 * This is a new container. Do all the 2637 * appropriate things to set it up. 2638 */ 2639 aac_add_container(sc, mir, 1); 2640 added = 1; 2641 } 2642 i++; 2643 } while ((i < mir->MntRespCount) && 2644 (i < AAC_MAX_CONTAINERS)); 2645 aac_release_sync_fib(sc); 2646 2647 /* 2648 * Go through our list of containers and see which ones 2649 * were not marked 'found'. Since the controller didn't 2650 * list them they must have been deleted. Do the 2651 * appropriate steps to destroy the device. Also reset 2652 * the co->co_found field. 2653 */ 2654 co = TAILQ_FIRST(&sc->aac_container_tqh); 2655 while (co != NULL) { 2656 if (co->co_found == 0) { 2657 device_delete_child(sc->aac_dev, 2658 co->co_disk); 2659 co_next = TAILQ_NEXT(co, co_link); 2660 AAC_LOCK_ACQUIRE(&sc-> 2661 aac_container_lock); 2662 TAILQ_REMOVE(&sc->aac_container_tqh, co, 2663 co_link); 2664 AAC_LOCK_RELEASE(&sc-> 2665 aac_container_lock); 2666 FREE(co, M_AACBUF); 2667 co = co_next; 2668 } else { 2669 co->co_found = 0; 2670 co = TAILQ_NEXT(co, co_link); 2671 } 2672 } 2673 2674 /* Attach the newly created containers */ 2675 if (added) 2676 bus_generic_attach(sc->aac_dev); 2677 2678 break; 2679 2680 default: 2681 break; 2682 } 2683 2684 default: 2685 break; 2686 } 2687 2688 /* Copy the AIF data to the AIF queue for ioctl retrieval */ 2689 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2690 next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH; 2691 if (next != sc->aac_aifq_tail) { 2692 bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command)); 2693 sc->aac_aifq_head = next; 2694 2695 /* On the off chance that someone is sleeping for an aif... */ 2696 if (sc->aac_state & AAC_STATE_AIF_SLEEPER) 2697 wakeup(sc->aac_aifq); 2698 /* Wakeup any poll()ers */ 2699 selwakeup(&sc->rcv_select); 2700 } 2701 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2702 2703 return; 2704 } 2705 2706 /* 2707 * Return the Revision of the driver to userspace and check to see if the 2708 * userspace app is possibly compatible. This is extremely bogus since 2709 * our driver doesn't follow Adaptec's versioning system. Cheat by just 2710 * returning what the card reported. 2711 */ 2712 static int 2713 aac_rev_check(struct aac_softc *sc, caddr_t udata) 2714 { 2715 struct aac_rev_check rev_check; 2716 struct aac_rev_check_resp rev_check_resp; 2717 int error = 0; 2718 2719 debug_called(2); 2720 2721 /* 2722 * Copyin the revision struct from userspace 2723 */ 2724 if ((error = copyin(udata, (caddr_t)&rev_check, 2725 sizeof(struct aac_rev_check))) != 0) { 2726 return error; 2727 } 2728 2729 debug(2, "Userland revision= %d\n", 2730 rev_check.callingRevision.buildNumber); 2731 2732 /* 2733 * Doctor up the response struct. 2734 */ 2735 rev_check_resp.possiblyCompatible = 1; 2736 rev_check_resp.adapterSWRevision.external.ul = 2737 sc->aac_revision.external.ul; 2738 rev_check_resp.adapterSWRevision.buildNumber = 2739 sc->aac_revision.buildNumber; 2740 2741 return(copyout((caddr_t)&rev_check_resp, udata, 2742 sizeof(struct aac_rev_check_resp))); 2743 } 2744 2745 /* 2746 * Pass the caller the next AIF in their queue 2747 */ 2748 static int 2749 aac_getnext_aif(struct aac_softc *sc, caddr_t arg) 2750 { 2751 struct get_adapter_fib_ioctl agf; 2752 int error; 2753 2754 debug_called(2); 2755 2756 if ((error = copyin(arg, &agf, sizeof(agf))) == 0) { 2757 2758 /* 2759 * Check the magic number that we gave the caller. 2760 */ 2761 if (agf.AdapterFibContext != (int)sc->aifthread) { 2762 error = EFAULT; 2763 } else { 2764 error = aac_return_aif(sc, agf.AifFib); 2765 if ((error == EAGAIN) && (agf.Wait)) { 2766 sc->aac_state |= AAC_STATE_AIF_SLEEPER; 2767 while (error == EAGAIN) { 2768 error = tsleep(sc->aac_aifq, PRIBIO | 2769 PCATCH, "aacaif", 0); 2770 if (error == 0) 2771 error = aac_return_aif(sc, 2772 agf.AifFib); 2773 } 2774 sc->aac_state &= ~AAC_STATE_AIF_SLEEPER; 2775 } 2776 } 2777 } 2778 return(error); 2779 } 2780 2781 /* 2782 * Hand the next AIF off the top of the queue out to userspace. 2783 */ 2784 static int 2785 aac_return_aif(struct aac_softc *sc, caddr_t uptr) 2786 { 2787 int error; 2788 2789 debug_called(2); 2790 2791 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock); 2792 if (sc->aac_aifq_tail == sc->aac_aifq_head) { 2793 error = EAGAIN; 2794 } else { 2795 error = copyout(&sc->aac_aifq[sc->aac_aifq_tail], uptr, 2796 sizeof(struct aac_aif_command)); 2797 if (error) 2798 device_printf(sc->aac_dev, 2799 "aac_return_aif: copyout returned %d\n", error); 2800 if (!error) 2801 sc->aac_aifq_tail = (sc->aac_aifq_tail + 1) % 2802 AAC_AIFQ_LENGTH; 2803 } 2804 AAC_LOCK_RELEASE(&sc->aac_aifq_lock); 2805 return(error); 2806 } 2807 2808 /* 2809 * Give the userland some information about the container. The AAC arch 2810 * expects the driver to be a SCSI passthrough type driver, so it expects 2811 * the containers to have b:t:l numbers. Fake it. 2812 */ 2813 static int 2814 aac_query_disk(struct aac_softc *sc, caddr_t uptr) 2815 { 2816 struct aac_query_disk query_disk; 2817 struct aac_container *co; 2818 struct aac_disk *disk; 2819 int error, id; 2820 2821 debug_called(2); 2822 2823 disk = NULL; 2824 2825 error = copyin(uptr, (caddr_t)&query_disk, 2826 sizeof(struct aac_query_disk)); 2827 if (error) 2828 return (error); 2829 2830 id = query_disk.ContainerNumber; 2831 if (id == -1) 2832 return (EINVAL); 2833 2834 AAC_LOCK_ACQUIRE(&sc->aac_container_lock); 2835 TAILQ_FOREACH(co, &sc->aac_container_tqh, co_link) { 2836 if (co->co_mntobj.ObjectId == id) 2837 break; 2838 } 2839 2840 if (co == NULL) { 2841 query_disk.Valid = 0; 2842 query_disk.Locked = 0; 2843 query_disk.Deleted = 1; /* XXX is this right? */ 2844 } else { 2845 disk = device_get_softc(co->co_disk); 2846 query_disk.Valid = 1; 2847 query_disk.Locked = 2848 (disk->ad_flags & AAC_DISK_OPEN) ? 1 : 0; 2849 query_disk.Deleted = 0; 2850 query_disk.Bus = device_get_unit(sc->aac_dev); 2851 query_disk.Target = disk->unit; 2852 query_disk.Lun = 0; 2853 query_disk.UnMapped = 0; 2854 sprintf(&query_disk.diskDeviceName[0], "%s%d", 2855 disk->ad_disk.d_name, disk->ad_disk.d_unit); 2856 } 2857 AAC_LOCK_RELEASE(&sc->aac_container_lock); 2858 2859 error = copyout((caddr_t)&query_disk, uptr, 2860 sizeof(struct aac_query_disk)); 2861 2862 return (error); 2863 } 2864 2865 static void 2866 aac_get_bus_info(struct aac_softc *sc) 2867 { 2868 struct aac_fib *fib; 2869 struct aac_ctcfg *c_cmd; 2870 struct aac_ctcfg_resp *c_resp; 2871 struct aac_vmioctl *vmi; 2872 struct aac_vmi_businf_resp *vmi_resp; 2873 struct aac_getbusinf businfo; 2874 struct aac_sim *caminf; 2875 device_t child; 2876 int i, found, error; 2877 2878 aac_alloc_sync_fib(sc, &fib, 0); 2879 c_cmd = (struct aac_ctcfg *)&fib->data[0]; 2880 bzero(c_cmd, sizeof(struct aac_ctcfg)); 2881 2882 c_cmd->Command = VM_ContainerConfig; 2883 c_cmd->cmd = CT_GET_SCSI_METHOD; 2884 c_cmd->param = 0; 2885 2886 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2887 sizeof(struct aac_ctcfg)); 2888 if (error) { 2889 device_printf(sc->aac_dev, "Error %d sending " 2890 "VM_ContainerConfig command\n", error); 2891 aac_release_sync_fib(sc); 2892 return; 2893 } 2894 2895 c_resp = (struct aac_ctcfg_resp *)&fib->data[0]; 2896 if (c_resp->Status != ST_OK) { 2897 device_printf(sc->aac_dev, "VM_ContainerConfig returned 0x%x\n", 2898 c_resp->Status); 2899 aac_release_sync_fib(sc); 2900 return; 2901 } 2902 2903 sc->scsi_method_id = c_resp->param; 2904 2905 vmi = (struct aac_vmioctl *)&fib->data[0]; 2906 bzero(vmi, sizeof(struct aac_vmioctl)); 2907 2908 vmi->Command = VM_Ioctl; 2909 vmi->ObjType = FT_DRIVE; 2910 vmi->MethId = sc->scsi_method_id; 2911 vmi->ObjId = 0; 2912 vmi->IoctlCmd = GetBusInfo; 2913 2914 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2915 sizeof(struct aac_vmioctl)); 2916 if (error) { 2917 device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n", 2918 error); 2919 aac_release_sync_fib(sc); 2920 return; 2921 } 2922 2923 vmi_resp = (struct aac_vmi_businf_resp *)&fib->data[0]; 2924 if (vmi_resp->Status != ST_OK) { 2925 device_printf(sc->aac_dev, "VM_Ioctl returned %d\n", 2926 vmi_resp->Status); 2927 aac_release_sync_fib(sc); 2928 return; 2929 } 2930 2931 bcopy(&vmi_resp->BusInf, &businfo, sizeof(struct aac_getbusinf)); 2932 aac_release_sync_fib(sc); 2933 2934 found = 0; 2935 for (i = 0; i < businfo.BusCount; i++) { 2936 if (businfo.BusValid[i] != AAC_BUS_VALID) 2937 continue; 2938 2939 caminf = (struct aac_sim *)malloc( sizeof(struct aac_sim), 2940 M_AACBUF, M_NOWAIT | M_ZERO); 2941 if (caminf == NULL) 2942 continue; 2943 2944 child = device_add_child(sc->aac_dev, "aacp", -1); 2945 if (child == NULL) { 2946 device_printf(sc->aac_dev, "device_add_child failed\n"); 2947 continue; 2948 } 2949 2950 caminf->TargetsPerBus = businfo.TargetsPerBus; 2951 caminf->BusNumber = i; 2952 caminf->InitiatorBusId = businfo.InitiatorBusId[i]; 2953 caminf->aac_sc = sc; 2954 caminf->sim_dev = child; 2955 2956 device_set_ivars(child, caminf); 2957 device_set_desc(child, "SCSI Passthrough Bus"); 2958 TAILQ_INSERT_TAIL(&sc->aac_sim_tqh, caminf, sim_link); 2959 2960 found = 1; 2961 } 2962 2963 if (found) 2964 bus_generic_attach(sc->aac_dev); 2965 2966 return; 2967 } 2968