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.h> 56 #include <sys/bus_dma.h> 57 #include <machine/resource.h> 58 59 #include <dev/aac/aacreg.h> 60 #include <sys/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 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); 75 static void aac_command_thread(struct aac_softc *sc); 76 77 /* Command Buffer Management */ 78 static void aac_map_command_sg(void *arg, bus_dma_segment_t *segs, 79 int nseg, int error); 80 static void aac_map_command_helper(void *arg, bus_dma_segment_t *segs, 81 int nseg, int error); 82 static int aac_alloc_commands(struct aac_softc *sc); 83 static void aac_free_commands(struct aac_softc *sc); 84 static void aac_unmap_command(struct aac_command *cm); 85 86 /* Hardware Interface */ 87 static void aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, 88 int error); 89 static int aac_check_firmware(struct aac_softc *sc); 90 static int aac_init(struct aac_softc *sc); 91 static int aac_sync_command(struct aac_softc *sc, u_int32_t command, 92 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, 93 u_int32_t arg3, u_int32_t *sp); 94 static int aac_enqueue_fib(struct aac_softc *sc, int queue, 95 struct aac_command *cm); 96 static int aac_dequeue_fib(struct aac_softc *sc, int queue, 97 u_int32_t *fib_size, struct aac_fib **fib_addr); 98 static int aac_enqueue_response(struct aac_softc *sc, int queue, 99 struct aac_fib *fib); 100 101 /* Falcon/PPC interface */ 102 static int aac_fa_get_fwstatus(struct aac_softc *sc); 103 static void aac_fa_qnotify(struct aac_softc *sc, int qbit); 104 static int aac_fa_get_istatus(struct aac_softc *sc); 105 static void aac_fa_clear_istatus(struct aac_softc *sc, int mask); 106 static void aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command, 107 u_int32_t arg0, u_int32_t arg1, 108 u_int32_t arg2, u_int32_t arg3); 109 static int aac_fa_get_mailbox(struct aac_softc *sc, int mb); 110 static void aac_fa_set_interrupts(struct aac_softc *sc, int enable); 111 112 struct aac_interface aac_fa_interface = { 113 aac_fa_get_fwstatus, 114 aac_fa_qnotify, 115 aac_fa_get_istatus, 116 aac_fa_clear_istatus, 117 aac_fa_set_mailbox, 118 aac_fa_get_mailbox, 119 aac_fa_set_interrupts 120 }; 121 122 /* StrongARM interface */ 123 static int aac_sa_get_fwstatus(struct aac_softc *sc); 124 static void aac_sa_qnotify(struct aac_softc *sc, int qbit); 125 static int aac_sa_get_istatus(struct aac_softc *sc); 126 static void aac_sa_clear_istatus(struct aac_softc *sc, int mask); 127 static void aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 128 u_int32_t arg0, u_int32_t arg1, 129 u_int32_t arg2, u_int32_t arg3); 130 static int aac_sa_get_mailbox(struct aac_softc *sc, int mb); 131 static void aac_sa_set_interrupts(struct aac_softc *sc, int enable); 132 133 struct aac_interface aac_sa_interface = { 134 aac_sa_get_fwstatus, 135 aac_sa_qnotify, 136 aac_sa_get_istatus, 137 aac_sa_clear_istatus, 138 aac_sa_set_mailbox, 139 aac_sa_get_mailbox, 140 aac_sa_set_interrupts 141 }; 142 143 /* i960Rx interface */ 144 static int aac_rx_get_fwstatus(struct aac_softc *sc); 145 static void aac_rx_qnotify(struct aac_softc *sc, int qbit); 146 static int aac_rx_get_istatus(struct aac_softc *sc); 147 static void aac_rx_clear_istatus(struct aac_softc *sc, int mask); 148 static void aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 149 u_int32_t arg0, u_int32_t arg1, 150 u_int32_t arg2, u_int32_t arg3); 151 static int aac_rx_get_mailbox(struct aac_softc *sc, int mb); 152 static void aac_rx_set_interrupts(struct aac_softc *sc, int enable); 153 154 struct aac_interface aac_rx_interface = { 155 aac_rx_get_fwstatus, 156 aac_rx_qnotify, 157 aac_rx_get_istatus, 158 aac_rx_clear_istatus, 159 aac_rx_set_mailbox, 160 aac_rx_get_mailbox, 161 aac_rx_set_interrupts 162 }; 163 164 /* Rocket/MIPS interface */ 165 static int aac_rkt_get_fwstatus(struct aac_softc *sc); 166 static void aac_rkt_qnotify(struct aac_softc *sc, int qbit); 167 static int aac_rkt_get_istatus(struct aac_softc *sc); 168 static void aac_rkt_clear_istatus(struct aac_softc *sc, int mask); 169 static void aac_rkt_set_mailbox(struct aac_softc *sc, u_int32_t command, 170 u_int32_t arg0, u_int32_t arg1, 171 u_int32_t arg2, u_int32_t arg3); 172 static int aac_rkt_get_mailbox(struct aac_softc *sc, int mb); 173 static void aac_rkt_set_interrupts(struct aac_softc *sc, int enable); 174 175 struct aac_interface aac_rkt_interface = { 176 aac_rkt_get_fwstatus, 177 aac_rkt_qnotify, 178 aac_rkt_get_istatus, 179 aac_rkt_clear_istatus, 180 aac_rkt_set_mailbox, 181 aac_rkt_get_mailbox, 182 aac_rkt_set_interrupts 183 }; 184 185 /* Debugging and Diagnostics */ 186 static void aac_describe_controller(struct aac_softc *sc); 187 static char *aac_describe_code(struct aac_code_lookup *table, 188 u_int32_t code); 189 190 /* Management Interface */ 191 static d_open_t aac_open; 192 static d_close_t aac_close; 193 static d_ioctl_t aac_ioctl; 194 static d_poll_t aac_poll; 195 static int aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib); 196 static void aac_handle_aif(struct aac_softc *sc, 197 struct aac_fib *fib); 198 static int aac_rev_check(struct aac_softc *sc, caddr_t udata); 199 static int aac_getnext_aif(struct aac_softc *sc, caddr_t arg); 200 static int aac_return_aif(struct aac_softc *sc, caddr_t uptr); 201 static int aac_query_disk(struct aac_softc *sc, caddr_t uptr); 202 203 static struct cdevsw aac_cdevsw = { 204 .d_version = D_VERSION, 205 .d_flags = D_NEEDGIANT, 206 .d_open = aac_open, 207 .d_close = aac_close, 208 .d_ioctl = aac_ioctl, 209 .d_poll = aac_poll, 210 .d_name = "aac", 211 }; 212 213 MALLOC_DEFINE(M_AACBUF, "aacbuf", "Buffers for the AAC driver"); 214 215 /* sysctl node */ 216 SYSCTL_NODE(_hw, OID_AUTO, aac, CTLFLAG_RD, 0, "AAC driver parameters"); 217 218 /* 219 * Device Interface 220 */ 221 222 /* 223 * Initialise the controller and softc 224 */ 225 int 226 aac_attach(struct aac_softc *sc) 227 { 228 int error, unit; 229 230 debug_called(1); 231 232 /* 233 * Initialise per-controller queues. 234 */ 235 aac_initq_free(sc); 236 aac_initq_ready(sc); 237 aac_initq_busy(sc); 238 aac_initq_bio(sc); 239 240 /* 241 * Initialise command-completion task. 242 */ 243 TASK_INIT(&sc->aac_task_complete, 0, aac_complete, sc); 244 245 /* disable interrupts before we enable anything */ 246 AAC_MASK_INTERRUPTS(sc); 247 248 /* mark controller as suspended until we get ourselves organised */ 249 sc->aac_state |= AAC_STATE_SUSPEND; 250 251 /* 252 * Check that the firmware on the card is supported. 253 */ 254 if ((error = aac_check_firmware(sc)) != 0) 255 return(error); 256 257 /* 258 * Initialize locks 259 */ 260 mtx_init(&sc->aac_aifq_lock, "AAC AIF lock", NULL, MTX_DEF); 261 mtx_init(&sc->aac_io_lock, "AAC I/O lock", NULL, MTX_DEF); 262 mtx_init(&sc->aac_container_lock, "AAC container lock", NULL, MTX_DEF); 263 TAILQ_INIT(&sc->aac_container_tqh); 264 265 /* Initialize the local AIF queue pointers */ 266 sc->aac_aifq_head = sc->aac_aifq_tail = AAC_AIFQ_LENGTH; 267 268 /* 269 * Initialise the adapter. 270 */ 271 if ((error = aac_init(sc)) != 0) 272 return(error); 273 274 /* 275 * Print a little information about the controller. 276 */ 277 aac_describe_controller(sc); 278 279 /* 280 * Register to probe our containers later. 281 */ 282 sc->aac_ich.ich_func = aac_startup; 283 sc->aac_ich.ich_arg = sc; 284 if (config_intrhook_establish(&sc->aac_ich) != 0) { 285 device_printf(sc->aac_dev, 286 "can't establish configuration hook\n"); 287 return(ENXIO); 288 } 289 290 /* 291 * Make the control device. 292 */ 293 unit = device_get_unit(sc->aac_dev); 294 sc->aac_dev_t = make_dev(&aac_cdevsw, unit, UID_ROOT, GID_OPERATOR, 295 0640, "aac%d", unit); 296 (void)make_dev_alias(sc->aac_dev_t, "afa%d", unit); 297 (void)make_dev_alias(sc->aac_dev_t, "hpn%d", unit); 298 sc->aac_dev_t->si_drv1 = sc; 299 300 /* Create the AIF thread */ 301 if (kthread_create((void(*)(void *))aac_command_thread, sc, 302 &sc->aifthread, 0, 0, "aac%daif", unit)) 303 panic("Could not create AIF thread\n"); 304 305 /* Register the shutdown method to only be called post-dump */ 306 if ((sc->eh = EVENTHANDLER_REGISTER(shutdown_final, aac_shutdown, 307 sc->aac_dev, SHUTDOWN_PRI_DEFAULT)) == NULL) 308 device_printf(sc->aac_dev, 309 "shutdown event registration failed\n"); 310 311 /* Register with CAM for the non-DASD devices */ 312 if ((sc->flags & AAC_FLAGS_ENABLE_CAM) != 0) { 313 TAILQ_INIT(&sc->aac_sim_tqh); 314 aac_get_bus_info(sc); 315 } 316 317 return(0); 318 } 319 320 /* 321 * Probe for containers, create disks. 322 */ 323 static void 324 aac_startup(void *arg) 325 { 326 struct aac_softc *sc; 327 struct aac_fib *fib; 328 struct aac_mntinfo *mi; 329 struct aac_mntinforesp *mir = NULL; 330 int count = 0, i = 0; 331 332 debug_called(1); 333 334 sc = (struct aac_softc *)arg; 335 336 /* disconnect ourselves from the intrhook chain */ 337 config_intrhook_disestablish(&sc->aac_ich); 338 339 aac_alloc_sync_fib(sc, &fib); 340 mi = (struct aac_mntinfo *)&fib->data[0]; 341 342 /* loop over possible containers */ 343 do { 344 /* request information on this container */ 345 bzero(mi, sizeof(struct aac_mntinfo)); 346 mi->Command = VM_NameServe; 347 mi->MntType = FT_FILESYS; 348 mi->MntCount = i; 349 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 350 sizeof(struct aac_mntinfo))) { 351 printf("error probing container %d", i); 352 continue; 353 } 354 355 mir = (struct aac_mntinforesp *)&fib->data[0]; 356 /* XXX Need to check if count changed */ 357 count = mir->MntRespCount; 358 aac_add_container(sc, mir, 0); 359 i++; 360 } while ((i < count) && (i < AAC_MAX_CONTAINERS)); 361 362 aac_release_sync_fib(sc); 363 364 /* poke the bus to actually attach the child devices */ 365 if (bus_generic_attach(sc->aac_dev)) 366 device_printf(sc->aac_dev, "bus_generic_attach failed\n"); 367 368 /* mark the controller up */ 369 sc->aac_state &= ~AAC_STATE_SUSPEND; 370 371 /* enable interrupts now */ 372 AAC_UNMASK_INTERRUPTS(sc); 373 } 374 375 /* 376 * Create a device to respresent a new container 377 */ 378 static void 379 aac_add_container(struct aac_softc *sc, struct aac_mntinforesp *mir, int f) 380 { 381 struct aac_container *co; 382 device_t child; 383 384 /* 385 * Check container volume type for validity. Note that many of 386 * the possible types may never show up. 387 */ 388 if ((mir->Status == ST_OK) && (mir->MntTable[0].VolType != CT_NONE)) { 389 co = (struct aac_container *)malloc(sizeof *co, M_AACBUF, 390 M_NOWAIT | M_ZERO); 391 if (co == NULL) 392 panic("Out of memory?!\n"); 393 debug(1, "id %x name '%.16s' size %u type %d", 394 mir->MntTable[0].ObjectId, 395 mir->MntTable[0].FileSystemName, 396 mir->MntTable[0].Capacity, mir->MntTable[0].VolType); 397 398 if ((child = device_add_child(sc->aac_dev, "aacd", -1)) == NULL) 399 device_printf(sc->aac_dev, "device_add_child failed\n"); 400 else 401 device_set_ivars(child, co); 402 device_set_desc(child, aac_describe_code(aac_container_types, 403 mir->MntTable[0].VolType)); 404 co->co_disk = child; 405 co->co_found = f; 406 bcopy(&mir->MntTable[0], &co->co_mntobj, 407 sizeof(struct aac_mntobj)); 408 mtx_lock(&sc->aac_container_lock); 409 TAILQ_INSERT_TAIL(&sc->aac_container_tqh, co, co_link); 410 mtx_unlock(&sc->aac_container_lock); 411 } 412 } 413 414 /* 415 * Free all of the resources associated with (sc) 416 * 417 * Should not be called if the controller is active. 418 */ 419 void 420 aac_free(struct aac_softc *sc) 421 { 422 423 debug_called(1); 424 425 /* remove the control device */ 426 if (sc->aac_dev_t != NULL) 427 destroy_dev(sc->aac_dev_t); 428 429 /* throw away any FIB buffers, discard the FIB DMA tag */ 430 aac_free_commands(sc); 431 if (sc->aac_fib_dmat) 432 bus_dma_tag_destroy(sc->aac_fib_dmat); 433 434 free(sc->aac_commands, M_AACBUF); 435 436 /* destroy the common area */ 437 if (sc->aac_common) { 438 bus_dmamap_unload(sc->aac_common_dmat, sc->aac_common_dmamap); 439 bus_dmamem_free(sc->aac_common_dmat, sc->aac_common, 440 sc->aac_common_dmamap); 441 } 442 if (sc->aac_common_dmat) 443 bus_dma_tag_destroy(sc->aac_common_dmat); 444 445 /* disconnect the interrupt handler */ 446 if (sc->aac_intr) 447 bus_teardown_intr(sc->aac_dev, sc->aac_irq, sc->aac_intr); 448 if (sc->aac_irq != NULL) 449 bus_release_resource(sc->aac_dev, SYS_RES_IRQ, sc->aac_irq_rid, 450 sc->aac_irq); 451 452 /* destroy data-transfer DMA tag */ 453 if (sc->aac_buffer_dmat) 454 bus_dma_tag_destroy(sc->aac_buffer_dmat); 455 456 /* destroy the parent DMA tag */ 457 if (sc->aac_parent_dmat) 458 bus_dma_tag_destroy(sc->aac_parent_dmat); 459 460 /* release the register window mapping */ 461 if (sc->aac_regs_resource != NULL) 462 bus_release_resource(sc->aac_dev, SYS_RES_MEMORY, 463 sc->aac_regs_rid, sc->aac_regs_resource); 464 } 465 466 /* 467 * Disconnect from the controller completely, in preparation for unload. 468 */ 469 int 470 aac_detach(device_t dev) 471 { 472 struct aac_softc *sc; 473 struct aac_container *co; 474 struct aac_sim *sim; 475 int error; 476 477 debug_called(1); 478 479 sc = device_get_softc(dev); 480 481 if (sc->aac_state & AAC_STATE_OPEN) 482 return(EBUSY); 483 484 /* Remove the child containers */ 485 while ((co = TAILQ_FIRST(&sc->aac_container_tqh)) != NULL) { 486 error = device_delete_child(dev, co->co_disk); 487 if (error) 488 return (error); 489 TAILQ_REMOVE(&sc->aac_container_tqh, co, co_link); 490 free(co, M_AACBUF); 491 } 492 493 /* Remove the CAM SIMs */ 494 while ((sim = TAILQ_FIRST(&sc->aac_sim_tqh)) != NULL) { 495 TAILQ_REMOVE(&sc->aac_sim_tqh, sim, sim_link); 496 error = device_delete_child(dev, sim->sim_dev); 497 if (error) 498 return (error); 499 free(sim, M_AACBUF); 500 } 501 502 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) { 503 sc->aifflags |= AAC_AIFFLAGS_EXIT; 504 wakeup(sc->aifthread); 505 tsleep(sc->aac_dev, PUSER | PCATCH, "aacdch", 30 * hz); 506 } 507 508 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) 509 panic("Cannot shutdown AIF thread\n"); 510 511 if ((error = aac_shutdown(dev))) 512 return(error); 513 514 EVENTHANDLER_DEREGISTER(shutdown_final, sc->eh); 515 516 aac_free(sc); 517 518 mtx_destroy(&sc->aac_aifq_lock); 519 mtx_destroy(&sc->aac_io_lock); 520 mtx_destroy(&sc->aac_container_lock); 521 522 return(0); 523 } 524 525 /* 526 * Bring the controller down to a dormant state and detach all child devices. 527 * 528 * This function is called before detach or system shutdown. 529 * 530 * Note that we can assume that the bioq on the controller is empty, as we won't 531 * allow shutdown if any device is open. 532 */ 533 int 534 aac_shutdown(device_t dev) 535 { 536 struct aac_softc *sc; 537 struct aac_fib *fib; 538 struct aac_close_command *cc; 539 540 debug_called(1); 541 542 sc = device_get_softc(dev); 543 544 sc->aac_state |= AAC_STATE_SUSPEND; 545 546 /* 547 * Send a Container shutdown followed by a HostShutdown FIB to the 548 * controller to convince it that we don't want to talk to it anymore. 549 * We've been closed and all I/O completed already 550 */ 551 device_printf(sc->aac_dev, "shutting down controller..."); 552 553 aac_alloc_sync_fib(sc, &fib); 554 cc = (struct aac_close_command *)&fib->data[0]; 555 556 bzero(cc, sizeof(struct aac_close_command)); 557 cc->Command = VM_CloseAll; 558 cc->ContainerId = 0xffffffff; 559 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 560 sizeof(struct aac_close_command))) 561 printf("FAILED.\n"); 562 else 563 printf("done\n"); 564 #if 0 565 else { 566 fib->data[0] = 0; 567 /* 568 * XXX Issuing this command to the controller makes it shut down 569 * but also keeps it from coming back up without a reset of the 570 * PCI bus. This is not desirable if you are just unloading the 571 * driver module with the intent to reload it later. 572 */ 573 if (aac_sync_fib(sc, FsaHostShutdown, AAC_FIBSTATE_SHUTDOWN, 574 fib, 1)) { 575 printf("FAILED.\n"); 576 } else { 577 printf("done.\n"); 578 } 579 } 580 #endif 581 582 AAC_MASK_INTERRUPTS(sc); 583 aac_release_sync_fib(sc); 584 585 return(0); 586 } 587 588 /* 589 * Bring the controller to a quiescent state, ready for system suspend. 590 */ 591 int 592 aac_suspend(device_t dev) 593 { 594 struct aac_softc *sc; 595 596 debug_called(1); 597 598 sc = device_get_softc(dev); 599 600 sc->aac_state |= AAC_STATE_SUSPEND; 601 602 AAC_MASK_INTERRUPTS(sc); 603 return(0); 604 } 605 606 /* 607 * Bring the controller back to a state ready for operation. 608 */ 609 int 610 aac_resume(device_t dev) 611 { 612 struct aac_softc *sc; 613 614 debug_called(1); 615 616 sc = device_get_softc(dev); 617 618 sc->aac_state &= ~AAC_STATE_SUSPEND; 619 AAC_UNMASK_INTERRUPTS(sc); 620 return(0); 621 } 622 623 /* 624 * Take an interrupt. 625 */ 626 void 627 aac_intr(void *arg) 628 { 629 struct aac_softc *sc; 630 u_int16_t reason; 631 632 debug_called(2); 633 634 sc = (struct aac_softc *)arg; 635 636 /* 637 * Read the status register directly. This is faster than taking the 638 * driver lock and reading the queues directly. It also saves having 639 * to turn parts of the driver lock into a spin mutex, which would be 640 * ugly. 641 */ 642 reason = AAC_GET_ISTATUS(sc); 643 AAC_CLEAR_ISTATUS(sc, reason); 644 645 /* handle completion processing */ 646 if (reason & AAC_DB_RESPONSE_READY) 647 taskqueue_enqueue_fast(taskqueue_fast, &sc->aac_task_complete); 648 649 /* controller wants to talk to us */ 650 if (reason & (AAC_DB_PRINTF | AAC_DB_COMMAND_READY)) { 651 /* 652 * XXX Make sure that we don't get fooled by strange messages 653 * that start with a NULL. 654 */ 655 if ((reason & AAC_DB_PRINTF) && 656 (sc->aac_common->ac_printf[0] == 0)) 657 sc->aac_common->ac_printf[0] = 32; 658 659 /* 660 * This might miss doing the actual wakeup. However, the 661 * msleep that this is waking up has a timeout, so it will 662 * wake up eventually. AIFs and printfs are low enough 663 * priority that they can handle hanging out for a few seconds 664 * if needed. 665 */ 666 wakeup(sc->aifthread); 667 } 668 } 669 670 /* 671 * Command Processing 672 */ 673 674 /* 675 * Start as much queued I/O as possible on the controller 676 */ 677 void 678 aac_startio(struct aac_softc *sc) 679 { 680 struct aac_command *cm; 681 int error; 682 683 debug_called(2); 684 685 for (;;) { 686 /* 687 * This flag might be set if the card is out of resources. 688 * Checking it here prevents an infinite loop of deferrals. 689 */ 690 if (sc->flags & AAC_QUEUE_FRZN) 691 break; 692 693 /* 694 * Try to get a command that's been put off for lack of 695 * resources 696 */ 697 cm = aac_dequeue_ready(sc); 698 699 /* 700 * Try to build a command off the bio queue (ignore error 701 * return) 702 */ 703 if (cm == NULL) 704 aac_bio_command(sc, &cm); 705 706 /* nothing to do? */ 707 if (cm == NULL) 708 break; 709 710 /* don't map more than once */ 711 if (cm->cm_flags & AAC_CMD_MAPPED) 712 panic("aac: command %p already mapped", cm); 713 714 /* 715 * Set up the command to go to the controller. If there are no 716 * data buffers associated with the command then it can bypass 717 * busdma. 718 */ 719 if (cm->cm_datalen != 0) { 720 error = bus_dmamap_load(sc->aac_buffer_dmat, 721 cm->cm_datamap, cm->cm_data, 722 cm->cm_datalen, 723 aac_map_command_sg, cm, 0); 724 if (error == EINPROGRESS) { 725 debug(1, "freezing queue\n"); 726 sc->flags |= AAC_QUEUE_FRZN; 727 error = 0; 728 } else if (error != 0) 729 panic("aac_startio: unexpected error %d from " 730 "busdma\n", error); 731 } else 732 aac_map_command_sg(cm, NULL, 0, 0); 733 } 734 } 735 736 /* 737 * Handle notification of one or more FIBs coming from the controller. 738 */ 739 static void 740 aac_command_thread(struct aac_softc *sc) 741 { 742 struct aac_fib *fib; 743 u_int32_t fib_size; 744 int size, retval; 745 746 debug_called(2); 747 748 mtx_lock(&sc->aac_io_lock); 749 sc->aifflags = AAC_AIFFLAGS_RUNNING; 750 751 while ((sc->aifflags & AAC_AIFFLAGS_EXIT) == 0) { 752 753 retval = 0; 754 if ((sc->aifflags & AAC_AIFFLAGS_PENDING) == 0) 755 retval = msleep(sc->aifthread, &sc->aac_io_lock, PRIBIO, 756 "aifthd", AAC_PERIODIC_INTERVAL * hz); 757 758 /* 759 * First see if any FIBs need to be allocated. This needs 760 * to be called without the driver lock because contigmalloc 761 * will grab Giant, and would result in an LOR. 762 */ 763 if ((sc->aifflags & AAC_AIFFLAGS_ALLOCFIBS) != 0) { 764 mtx_unlock(&sc->aac_io_lock); 765 aac_alloc_commands(sc); 766 mtx_lock(&sc->aac_io_lock); 767 sc->aifflags &= ~AAC_AIFFLAGS_ALLOCFIBS; 768 aac_startio(sc); 769 } 770 771 /* 772 * While we're here, check to see if any commands are stuck. 773 * This is pretty low-priority, so it's ok if it doesn't 774 * always fire. 775 */ 776 if (retval == EWOULDBLOCK) 777 aac_timeout(sc); 778 779 /* Check the hardware printf message buffer */ 780 if (sc->aac_common->ac_printf[0] != 0) 781 aac_print_printf(sc); 782 783 /* Also check to see if the adapter has a command for us. */ 784 while (aac_dequeue_fib(sc, AAC_HOST_NORM_CMD_QUEUE, 785 &fib_size, &fib) == 0) { 786 787 AAC_PRINT_FIB(sc, fib); 788 789 switch (fib->Header.Command) { 790 case AifRequest: 791 aac_handle_aif(sc, fib); 792 break; 793 default: 794 device_printf(sc->aac_dev, "unknown command " 795 "from controller\n"); 796 break; 797 } 798 799 if ((fib->Header.XferState == 0) || 800 (fib->Header.StructType != AAC_FIBTYPE_TFIB)) 801 break; 802 803 /* Return the AIF to the controller. */ 804 if (fib->Header.XferState & AAC_FIBSTATE_FROMADAP) { 805 fib->Header.XferState |= AAC_FIBSTATE_DONEHOST; 806 *(AAC_FSAStatus*)fib->data = ST_OK; 807 808 /* XXX Compute the Size field? */ 809 size = fib->Header.Size; 810 if (size > sizeof(struct aac_fib)) { 811 size = sizeof(struct aac_fib); 812 fib->Header.Size = size; 813 } 814 /* 815 * Since we did not generate this command, it 816 * cannot go through the normal 817 * enqueue->startio chain. 818 */ 819 aac_enqueue_response(sc, 820 AAC_ADAP_NORM_RESP_QUEUE, 821 fib); 822 } 823 } 824 } 825 sc->aifflags &= ~AAC_AIFFLAGS_RUNNING; 826 mtx_unlock(&sc->aac_io_lock); 827 wakeup(sc->aac_dev); 828 829 kthread_exit(0); 830 } 831 832 /* 833 * Process completed commands. 834 */ 835 static void 836 aac_complete(void *context, int pending) 837 { 838 struct aac_softc *sc; 839 struct aac_command *cm; 840 struct aac_fib *fib; 841 u_int32_t fib_size; 842 843 debug_called(2); 844 845 sc = (struct aac_softc *)context; 846 847 mtx_lock(&sc->aac_io_lock); 848 849 /* pull completed commands off the queue */ 850 for (;;) { 851 /* look for completed FIBs on our queue */ 852 if (aac_dequeue_fib(sc, AAC_HOST_NORM_RESP_QUEUE, &fib_size, 853 &fib)) 854 break; /* nothing to do */ 855 856 /* get the command, unmap and hand off for processing */ 857 cm = sc->aac_commands + fib->Header.SenderData; 858 if (cm == NULL) { 859 AAC_PRINT_FIB(sc, fib); 860 break; 861 } 862 863 aac_remove_busy(cm); 864 aac_unmap_command(cm); 865 cm->cm_flags |= AAC_CMD_COMPLETED; 866 867 /* is there a completion handler? */ 868 if (cm->cm_complete != NULL) { 869 cm->cm_complete(cm); 870 } else { 871 /* assume that someone is sleeping on this command */ 872 wakeup(cm); 873 } 874 } 875 876 /* see if we can start some more I/O */ 877 sc->flags &= ~AAC_QUEUE_FRZN; 878 aac_startio(sc); 879 880 mtx_unlock(&sc->aac_io_lock); 881 } 882 883 /* 884 * Handle a bio submitted from a disk device. 885 */ 886 void 887 aac_submit_bio(struct bio *bp) 888 { 889 struct aac_disk *ad; 890 struct aac_softc *sc; 891 892 debug_called(2); 893 894 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 895 sc = ad->ad_controller; 896 897 /* queue the BIO and try to get some work done */ 898 aac_enqueue_bio(sc, bp); 899 aac_startio(sc); 900 } 901 902 /* 903 * Get a bio and build a command to go with it. 904 */ 905 static int 906 aac_bio_command(struct aac_softc *sc, struct aac_command **cmp) 907 { 908 struct aac_command *cm; 909 struct aac_fib *fib; 910 struct aac_disk *ad; 911 struct bio *bp; 912 913 debug_called(2); 914 915 /* get the resources we will need */ 916 cm = NULL; 917 bp = NULL; 918 if (aac_alloc_command(sc, &cm)) /* get a command */ 919 goto fail; 920 if ((bp = aac_dequeue_bio(sc)) == NULL) 921 goto fail; 922 923 /* fill out the command */ 924 cm->cm_data = (void *)bp->bio_data; 925 cm->cm_datalen = bp->bio_bcount; 926 cm->cm_complete = aac_bio_complete; 927 cm->cm_private = bp; 928 cm->cm_timestamp = time_uptime; 929 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 930 931 /* build the FIB */ 932 fib = cm->cm_fib; 933 fib->Header.Size = sizeof(struct aac_fib_header); 934 fib->Header.XferState = 935 AAC_FIBSTATE_HOSTOWNED | 936 AAC_FIBSTATE_INITIALISED | 937 AAC_FIBSTATE_EMPTY | 938 AAC_FIBSTATE_FROMHOST | 939 AAC_FIBSTATE_REXPECTED | 940 AAC_FIBSTATE_NORM | 941 AAC_FIBSTATE_ASYNC | 942 AAC_FIBSTATE_FAST_RESPONSE; 943 944 /* build the read/write request */ 945 ad = (struct aac_disk *)bp->bio_disk->d_drv1; 946 947 if ((sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 948 fib->Header.Command = ContainerCommand; 949 if (bp->bio_cmd == BIO_READ) { 950 struct aac_blockread *br; 951 br = (struct aac_blockread *)&fib->data[0]; 952 br->Command = VM_CtBlockRead; 953 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 954 br->BlockNumber = bp->bio_pblkno; 955 br->ByteCount = bp->bio_bcount; 956 fib->Header.Size += sizeof(struct aac_blockread); 957 cm->cm_sgtable = &br->SgMap; 958 cm->cm_flags |= AAC_CMD_DATAIN; 959 } else { 960 struct aac_blockwrite *bw; 961 bw = (struct aac_blockwrite *)&fib->data[0]; 962 bw->Command = VM_CtBlockWrite; 963 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 964 bw->BlockNumber = bp->bio_pblkno; 965 bw->ByteCount = bp->bio_bcount; 966 bw->Stable = CUNSTABLE; 967 fib->Header.Size += sizeof(struct aac_blockwrite); 968 cm->cm_flags |= AAC_CMD_DATAOUT; 969 cm->cm_sgtable = &bw->SgMap; 970 } 971 } else { 972 fib->Header.Command = ContainerCommand64; 973 if (bp->bio_cmd == BIO_READ) { 974 struct aac_blockread64 *br; 975 br = (struct aac_blockread64 *)&fib->data[0]; 976 br->Command = VM_CtHostRead64; 977 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 978 br->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 979 br->BlockNumber = bp->bio_pblkno; 980 br->Pad = 0; 981 br->Flags = 0; 982 fib->Header.Size += sizeof(struct aac_blockread64); 983 cm->cm_flags |= AAC_CMD_DATAOUT; 984 cm->cm_sgtable = (struct aac_sg_table *)&br->SgMap64; 985 } else { 986 struct aac_blockwrite64 *bw; 987 bw = (struct aac_blockwrite64 *)&fib->data[0]; 988 bw->Command = VM_CtHostWrite64; 989 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 990 bw->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE; 991 bw->BlockNumber = bp->bio_pblkno; 992 bw->Pad = 0; 993 bw->Flags = 0; 994 fib->Header.Size += sizeof(struct aac_blockwrite64); 995 cm->cm_flags |= AAC_CMD_DATAIN; 996 cm->cm_sgtable = (struct aac_sg_table *)&bw->SgMap64; 997 } 998 } 999 1000 *cmp = cm; 1001 return(0); 1002 1003 fail: 1004 if (cm != NULL) 1005 aac_release_command(cm); 1006 return(ENOMEM); 1007 } 1008 1009 /* 1010 * Handle a bio-instigated command that has been completed. 1011 */ 1012 static void 1013 aac_bio_complete(struct aac_command *cm) 1014 { 1015 struct aac_blockread_response *brr; 1016 struct aac_blockwrite_response *bwr; 1017 struct bio *bp; 1018 AAC_FSAStatus status; 1019 1020 /* fetch relevant status and then release the command */ 1021 bp = (struct bio *)cm->cm_private; 1022 if (bp->bio_cmd == BIO_READ) { 1023 brr = (struct aac_blockread_response *)&cm->cm_fib->data[0]; 1024 status = brr->Status; 1025 } else { 1026 bwr = (struct aac_blockwrite_response *)&cm->cm_fib->data[0]; 1027 status = bwr->Status; 1028 } 1029 aac_release_command(cm); 1030 1031 /* fix up the bio based on status */ 1032 if (status == ST_OK) { 1033 bp->bio_resid = 0; 1034 } else { 1035 bp->bio_error = EIO; 1036 bp->bio_flags |= BIO_ERROR; 1037 /* pass an error string out to the disk layer */ 1038 bp->bio_driver1 = aac_describe_code(aac_command_status_table, 1039 status); 1040 } 1041 aac_biodone(bp); 1042 } 1043 1044 /* 1045 * Submit a command to the controller, return when it completes. 1046 * XXX This is very dangerous! If the card has gone out to lunch, we could 1047 * be stuck here forever. At the same time, signals are not caught 1048 * because there is a risk that a signal could wakeup the sleep before 1049 * the card has a chance to complete the command. Since there is no way 1050 * to cancel a command that is in progress, we can't protect against the 1051 * card completing a command late and spamming the command and data 1052 * memory. So, we are held hostage until the command completes. 1053 */ 1054 static int 1055 aac_wait_command(struct aac_command *cm) 1056 { 1057 struct aac_softc *sc; 1058 int error; 1059 1060 debug_called(2); 1061 1062 sc = cm->cm_sc; 1063 1064 /* Put the command on the ready queue and get things going */ 1065 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; 1066 aac_enqueue_ready(cm); 1067 aac_startio(sc); 1068 error = msleep(cm, &sc->aac_io_lock, PRIBIO, "aacwait", 0); 1069 return(error); 1070 } 1071 1072 /* 1073 *Command Buffer Management 1074 */ 1075 1076 /* 1077 * Allocate a command. 1078 */ 1079 int 1080 aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp) 1081 { 1082 struct aac_command *cm; 1083 1084 debug_called(3); 1085 1086 if ((cm = aac_dequeue_free(sc)) == NULL) { 1087 if (sc->total_fibs < sc->aac_max_fibs) { 1088 sc->aifflags |= AAC_AIFFLAGS_ALLOCFIBS; 1089 wakeup(sc->aifthread); 1090 } 1091 return (EBUSY); 1092 } 1093 1094 *cmp = cm; 1095 return(0); 1096 } 1097 1098 /* 1099 * Release a command back to the freelist. 1100 */ 1101 void 1102 aac_release_command(struct aac_command *cm) 1103 { 1104 debug_called(3); 1105 1106 /* (re)initialise the command/FIB */ 1107 cm->cm_sgtable = NULL; 1108 cm->cm_flags = 0; 1109 cm->cm_complete = NULL; 1110 cm->cm_private = NULL; 1111 cm->cm_fib->Header.XferState = AAC_FIBSTATE_EMPTY; 1112 cm->cm_fib->Header.StructType = AAC_FIBTYPE_TFIB; 1113 cm->cm_fib->Header.Flags = 0; 1114 cm->cm_fib->Header.SenderSize = sizeof(struct aac_fib); 1115 1116 /* 1117 * These are duplicated in aac_start to cover the case where an 1118 * intermediate stage may have destroyed them. They're left 1119 * initialised here for debugging purposes only. 1120 */ 1121 cm->cm_fib->Header.ReceiverFibAddress = (u_int32_t)cm->cm_fibphys; 1122 cm->cm_fib->Header.SenderData = 0; 1123 1124 aac_enqueue_free(cm); 1125 } 1126 1127 /* 1128 * Map helper for command/FIB allocation. 1129 */ 1130 static void 1131 aac_map_command_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1132 { 1133 uint32_t *fibphys; 1134 1135 fibphys = (uint32_t *)arg; 1136 1137 debug_called(3); 1138 1139 *fibphys = segs[0].ds_addr; 1140 } 1141 1142 /* 1143 * Allocate and initialise commands/FIBs for this adapter. 1144 */ 1145 static int 1146 aac_alloc_commands(struct aac_softc *sc) 1147 { 1148 struct aac_command *cm; 1149 struct aac_fibmap *fm; 1150 uint32_t fibphys; 1151 int i, error; 1152 1153 debug_called(2); 1154 1155 if (sc->total_fibs + AAC_FIB_COUNT > sc->aac_max_fibs) 1156 return (ENOMEM); 1157 1158 fm = malloc(sizeof(struct aac_fibmap), M_AACBUF, M_NOWAIT|M_ZERO); 1159 if (fm == NULL) 1160 return (ENOMEM); 1161 1162 /* allocate the FIBs in DMAable memory and load them */ 1163 if (bus_dmamem_alloc(sc->aac_fib_dmat, (void **)&fm->aac_fibs, 1164 BUS_DMA_NOWAIT, &fm->aac_fibmap)) { 1165 device_printf(sc->aac_dev, 1166 "Not enough contiguous memory available.\n"); 1167 free(fm, M_AACBUF); 1168 return (ENOMEM); 1169 } 1170 1171 /* Ignore errors since this doesn't bounce */ 1172 (void)bus_dmamap_load(sc->aac_fib_dmat, fm->aac_fibmap, fm->aac_fibs, 1173 AAC_FIB_COUNT * sizeof(struct aac_fib), 1174 aac_map_command_helper, &fibphys, 0); 1175 1176 /* initialise constant fields in the command structure */ 1177 mtx_lock(&sc->aac_io_lock); 1178 bzero(fm->aac_fibs, AAC_FIB_COUNT * sizeof(struct aac_fib)); 1179 for (i = 0; i < AAC_FIB_COUNT; i++) { 1180 cm = sc->aac_commands + sc->total_fibs; 1181 fm->aac_commands = cm; 1182 cm->cm_sc = sc; 1183 cm->cm_fib = fm->aac_fibs + i; 1184 cm->cm_fibphys = fibphys + (i * sizeof(struct aac_fib)); 1185 cm->cm_index = sc->total_fibs; 1186 1187 if ((error = bus_dmamap_create(sc->aac_buffer_dmat, 0, 1188 &cm->cm_datamap)) == 0) 1189 aac_release_command(cm); 1190 else 1191 break; 1192 sc->total_fibs++; 1193 } 1194 1195 if (i > 0) { 1196 TAILQ_INSERT_TAIL(&sc->aac_fibmap_tqh, fm, fm_link); 1197 debug(1, "total_fibs= %d\n", sc->total_fibs); 1198 mtx_unlock(&sc->aac_io_lock); 1199 return (0); 1200 } 1201 1202 mtx_unlock(&sc->aac_io_lock); 1203 bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap); 1204 bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap); 1205 free(fm, M_AACBUF); 1206 return (ENOMEM); 1207 } 1208 1209 /* 1210 * Free FIBs owned by this adapter. 1211 */ 1212 static void 1213 aac_free_commands(struct aac_softc *sc) 1214 { 1215 struct aac_fibmap *fm; 1216 struct aac_command *cm; 1217 int i; 1218 1219 debug_called(1); 1220 1221 while ((fm = TAILQ_FIRST(&sc->aac_fibmap_tqh)) != NULL) { 1222 1223 TAILQ_REMOVE(&sc->aac_fibmap_tqh, fm, fm_link); 1224 /* 1225 * We check against total_fibs to handle partially 1226 * allocated blocks. 1227 */ 1228 for (i = 0; i < AAC_FIB_COUNT && sc->total_fibs--; i++) { 1229 cm = fm->aac_commands + i; 1230 bus_dmamap_destroy(sc->aac_buffer_dmat, cm->cm_datamap); 1231 } 1232 bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap); 1233 bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap); 1234 free(fm, M_AACBUF); 1235 } 1236 } 1237 1238 /* 1239 * Command-mapping helper function - populate this command's s/g table. 1240 */ 1241 static void 1242 aac_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1243 { 1244 struct aac_softc *sc; 1245 struct aac_command *cm; 1246 struct aac_fib *fib; 1247 int i; 1248 1249 debug_called(3); 1250 1251 cm = (struct aac_command *)arg; 1252 sc = cm->cm_sc; 1253 fib = cm->cm_fib; 1254 1255 /* copy into the FIB */ 1256 if (cm->cm_sgtable != NULL) { 1257 if ((cm->cm_sc->flags & AAC_FLAGS_SG_64BIT) == 0) { 1258 struct aac_sg_table *sg; 1259 sg = cm->cm_sgtable; 1260 sg->SgCount = nseg; 1261 for (i = 0; i < nseg; i++) { 1262 sg->SgEntry[i].SgAddress = segs[i].ds_addr; 1263 sg->SgEntry[i].SgByteCount = segs[i].ds_len; 1264 } 1265 /* update the FIB size for the s/g count */ 1266 fib->Header.Size += nseg * sizeof(struct aac_sg_entry); 1267 } else { 1268 struct aac_sg_table64 *sg; 1269 sg = (struct aac_sg_table64 *)cm->cm_sgtable; 1270 sg->SgCount = nseg; 1271 for (i = 0; i < nseg; i++) { 1272 sg->SgEntry64[i].SgAddress = segs[i].ds_addr; 1273 sg->SgEntry64[i].SgByteCount = segs[i].ds_len; 1274 } 1275 /* update the FIB size for the s/g count */ 1276 fib->Header.Size += nseg*sizeof(struct aac_sg_entry64); 1277 } 1278 } 1279 1280 /* Fix up the address values in the FIB. Use the command array index 1281 * instead of a pointer since these fields are only 32 bits. Shift 1282 * the SenderFibAddress over to make room for the fast response bit. 1283 */ 1284 cm->cm_fib->Header.SenderFibAddress = (cm->cm_index << 1); 1285 cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys; 1286 1287 /* save a pointer to the command for speedy reverse-lookup */ 1288 cm->cm_fib->Header.SenderData = cm->cm_index; 1289 1290 if (cm->cm_flags & AAC_CMD_DATAIN) 1291 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1292 BUS_DMASYNC_PREREAD); 1293 if (cm->cm_flags & AAC_CMD_DATAOUT) 1294 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1295 BUS_DMASYNC_PREWRITE); 1296 cm->cm_flags |= AAC_CMD_MAPPED; 1297 1298 /* Put the FIB on the outbound queue */ 1299 if (aac_enqueue_fib(sc, cm->cm_queue, cm) == EBUSY) { 1300 aac_unmap_command(cm); 1301 sc->flags |= AAC_QUEUE_FRZN; 1302 aac_requeue_ready(cm); 1303 } 1304 1305 return; 1306 } 1307 1308 /* 1309 * Unmap a command from controller-visible space. 1310 */ 1311 static void 1312 aac_unmap_command(struct aac_command *cm) 1313 { 1314 struct aac_softc *sc; 1315 1316 debug_called(2); 1317 1318 sc = cm->cm_sc; 1319 1320 if (!(cm->cm_flags & AAC_CMD_MAPPED)) 1321 return; 1322 1323 if (cm->cm_datalen != 0) { 1324 if (cm->cm_flags & AAC_CMD_DATAIN) 1325 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1326 BUS_DMASYNC_POSTREAD); 1327 if (cm->cm_flags & AAC_CMD_DATAOUT) 1328 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1329 BUS_DMASYNC_POSTWRITE); 1330 1331 bus_dmamap_unload(sc->aac_buffer_dmat, cm->cm_datamap); 1332 } 1333 cm->cm_flags &= ~AAC_CMD_MAPPED; 1334 } 1335 1336 /* 1337 * Hardware Interface 1338 */ 1339 1340 /* 1341 * Initialise the adapter. 1342 */ 1343 static void 1344 aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1345 { 1346 struct aac_softc *sc; 1347 1348 debug_called(1); 1349 1350 sc = (struct aac_softc *)arg; 1351 1352 sc->aac_common_busaddr = segs[0].ds_addr; 1353 } 1354 1355 static int 1356 aac_check_firmware(struct aac_softc *sc) 1357 { 1358 u_int32_t major, minor, options; 1359 1360 debug_called(1); 1361 1362 /* 1363 * Retrieve the firmware version numbers. Dell PERC2/QC cards with 1364 * firmware version 1.x are not compatible with this driver. 1365 */ 1366 if (sc->flags & AAC_FLAGS_PERC2QC) { 1367 if (aac_sync_command(sc, AAC_MONKER_GETKERNVER, 0, 0, 0, 0, 1368 NULL)) { 1369 device_printf(sc->aac_dev, 1370 "Error reading firmware version\n"); 1371 return (EIO); 1372 } 1373 1374 /* These numbers are stored as ASCII! */ 1375 major = (AAC_GET_MAILBOX(sc, 1) & 0xff) - 0x30; 1376 minor = (AAC_GET_MAILBOX(sc, 2) & 0xff) - 0x30; 1377 if (major == 1) { 1378 device_printf(sc->aac_dev, 1379 "Firmware version %d.%d is not supported.\n", 1380 major, minor); 1381 return (EINVAL); 1382 } 1383 } 1384 1385 /* 1386 * Retrieve the capabilities/supported options word so we know what 1387 * work-arounds to enable. 1388 */ 1389 if (aac_sync_command(sc, AAC_MONKER_GETINFO, 0, 0, 0, 0, NULL)) { 1390 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 1391 return (EIO); 1392 } 1393 options = AAC_GET_MAILBOX(sc, 1); 1394 sc->supported_options = options; 1395 1396 if ((options & AAC_SUPPORTED_4GB_WINDOW) != 0 && 1397 (sc->flags & AAC_FLAGS_NO4GB) == 0) 1398 sc->flags |= AAC_FLAGS_4GB_WINDOW; 1399 if (options & AAC_SUPPORTED_NONDASD) 1400 sc->flags |= AAC_FLAGS_ENABLE_CAM; 1401 if ((options & AAC_SUPPORTED_SGMAP_HOST64) != 0 1402 && (sizeof(bus_addr_t) > 4)) { 1403 device_printf(sc->aac_dev, "Enabling 64-bit address support\n"); 1404 sc->flags |= AAC_FLAGS_SG_64BIT; 1405 } 1406 1407 /* Check for broken hardware that does a lower number of commands */ 1408 if ((sc->flags & AAC_FLAGS_256FIBS) == 0) 1409 sc->aac_max_fibs = AAC_MAX_FIBS; 1410 else 1411 sc->aac_max_fibs = 256; 1412 1413 return (0); 1414 } 1415 1416 static int 1417 aac_init(struct aac_softc *sc) 1418 { 1419 struct aac_adapter_init *ip; 1420 time_t then; 1421 u_int32_t code, qoffset; 1422 int error; 1423 1424 debug_called(1); 1425 1426 /* 1427 * First wait for the adapter to come ready. 1428 */ 1429 then = time_uptime; 1430 do { 1431 code = AAC_GET_FWSTATUS(sc); 1432 if (code & AAC_SELF_TEST_FAILED) { 1433 device_printf(sc->aac_dev, "FATAL: selftest failed\n"); 1434 return(ENXIO); 1435 } 1436 if (code & AAC_KERNEL_PANIC) { 1437 device_printf(sc->aac_dev, 1438 "FATAL: controller kernel panic\n"); 1439 return(ENXIO); 1440 } 1441 if (time_uptime > (then + AAC_BOOT_TIMEOUT)) { 1442 device_printf(sc->aac_dev, 1443 "FATAL: controller not coming ready, " 1444 "status %x\n", code); 1445 return(ENXIO); 1446 } 1447 } while (!(code & AAC_UP_AND_RUNNING)); 1448 1449 error = ENOMEM; 1450 /* 1451 * Create DMA tag for mapping buffers into controller-addressable space. 1452 */ 1453 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1454 1, 0, /* algnmnt, boundary */ 1455 (sc->flags & AAC_FLAGS_SG_64BIT) ? 1456 BUS_SPACE_MAXADDR : 1457 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 1458 BUS_SPACE_MAXADDR, /* highaddr */ 1459 NULL, NULL, /* filter, filterarg */ 1460 MAXBSIZE, /* maxsize */ 1461 AAC_MAXSGENTRIES, /* nsegments */ 1462 MAXBSIZE, /* maxsegsize */ 1463 BUS_DMA_ALLOCNOW, /* flags */ 1464 busdma_lock_mutex, /* lockfunc */ 1465 &sc->aac_io_lock, /* lockfuncarg */ 1466 &sc->aac_buffer_dmat)) { 1467 device_printf(sc->aac_dev, "can't allocate buffer DMA tag\n"); 1468 goto out; 1469 } 1470 1471 /* 1472 * Create DMA tag for mapping FIBs into controller-addressable space.. 1473 */ 1474 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1475 1, 0, /* algnmnt, boundary */ 1476 (sc->flags & AAC_FLAGS_4GB_WINDOW) ? 1477 BUS_SPACE_MAXADDR_32BIT : 1478 0x7fffffff, /* lowaddr */ 1479 BUS_SPACE_MAXADDR, /* highaddr */ 1480 NULL, NULL, /* filter, filterarg */ 1481 AAC_FIB_COUNT * 1482 sizeof(struct aac_fib), /* maxsize */ 1483 1, /* nsegments */ 1484 AAC_FIB_COUNT * 1485 sizeof(struct aac_fib), /* maxsegsize */ 1486 0, /* flags */ 1487 NULL, NULL, /* No locking needed */ 1488 &sc->aac_fib_dmat)) { 1489 device_printf(sc->aac_dev, "can't allocate FIB DMA tag\n");; 1490 goto out; 1491 } 1492 1493 /* 1494 * Create DMA tag for the common structure and allocate it. 1495 */ 1496 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1497 1, 0, /* algnmnt, boundary */ 1498 (sc->flags & AAC_FLAGS_4GB_WINDOW) ? 1499 BUS_SPACE_MAXADDR_32BIT : 1500 0x7fffffff, /* lowaddr */ 1501 BUS_SPACE_MAXADDR, /* highaddr */ 1502 NULL, NULL, /* filter, filterarg */ 1503 8192 + sizeof(struct aac_common), /* maxsize */ 1504 1, /* nsegments */ 1505 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 1506 0, /* flags */ 1507 NULL, NULL, /* No locking needed */ 1508 &sc->aac_common_dmat)) { 1509 device_printf(sc->aac_dev, 1510 "can't allocate common structure DMA tag\n"); 1511 goto out; 1512 } 1513 if (bus_dmamem_alloc(sc->aac_common_dmat, (void **)&sc->aac_common, 1514 BUS_DMA_NOWAIT, &sc->aac_common_dmamap)) { 1515 device_printf(sc->aac_dev, "can't allocate common structure\n"); 1516 goto out; 1517 } 1518 1519 /* 1520 * Work around a bug in the 2120 and 2200 that cannot DMA commands 1521 * below address 8192 in physical memory. 1522 * XXX If the padding is not needed, can it be put to use instead 1523 * of ignored? 1524 */ 1525 (void)bus_dmamap_load(sc->aac_common_dmat, sc->aac_common_dmamap, 1526 sc->aac_common, 8192 + sizeof(*sc->aac_common), 1527 aac_common_map, sc, 0); 1528 1529 if (sc->aac_common_busaddr < 8192) { 1530 sc->aac_common = (struct aac_common *) 1531 ((uint8_t *)sc->aac_common + 8192); 1532 sc->aac_common_busaddr += 8192; 1533 } 1534 bzero(sc->aac_common, sizeof(*sc->aac_common)); 1535 1536 /* Allocate some FIBs and associated command structs */ 1537 TAILQ_INIT(&sc->aac_fibmap_tqh); 1538 sc->aac_commands = malloc(AAC_MAX_FIBS * sizeof(struct aac_command), 1539 M_AACBUF, M_WAITOK|M_ZERO); 1540 while (sc->total_fibs < AAC_PREALLOCATE_FIBS) { 1541 if (aac_alloc_commands(sc) != 0) 1542 break; 1543 } 1544 if (sc->total_fibs == 0) 1545 goto out; 1546 1547 /* 1548 * Fill in the init structure. This tells the adapter about the 1549 * physical location of various important shared data structures. 1550 */ 1551 ip = &sc->aac_common->ac_init; 1552 ip->InitStructRevision = AAC_INIT_STRUCT_REVISION; 1553 ip->MiniPortRevision = AAC_INIT_STRUCT_MINIPORT_REVISION; 1554 1555 ip->AdapterFibsPhysicalAddress = sc->aac_common_busaddr + 1556 offsetof(struct aac_common, ac_fibs); 1557 ip->AdapterFibsVirtualAddress = 0; 1558 ip->AdapterFibsSize = AAC_ADAPTER_FIBS * sizeof(struct aac_fib); 1559 ip->AdapterFibAlign = sizeof(struct aac_fib); 1560 1561 ip->PrintfBufferAddress = sc->aac_common_busaddr + 1562 offsetof(struct aac_common, ac_printf); 1563 ip->PrintfBufferSize = AAC_PRINTF_BUFSIZE; 1564 1565 /* 1566 * The adapter assumes that pages are 4K in size, except on some 1567 * broken firmware versions that do the page->byte conversion twice, 1568 * therefore 'assuming' that this value is in 16MB units (2^24). 1569 * Round up since the granularity is so high. 1570 */ 1571 ip->HostPhysMemPages = ctob(physmem) / AAC_PAGE_SIZE; 1572 if (sc->flags & AAC_FLAGS_BROKEN_MEMMAP) { 1573 ip->HostPhysMemPages = 1574 (ip->HostPhysMemPages + AAC_PAGE_SIZE) / AAC_PAGE_SIZE; 1575 } 1576 ip->HostElapsedSeconds = time_uptime; /* reset later if invalid */ 1577 1578 /* 1579 * Initialise FIB queues. Note that it appears that the layout of the 1580 * indexes and the segmentation of the entries may be mandated by the 1581 * adapter, which is only told about the base of the queue index fields. 1582 * 1583 * The initial values of the indices are assumed to inform the adapter 1584 * of the sizes of the respective queues, and theoretically it could 1585 * work out the entire layout of the queue structures from this. We 1586 * take the easy route and just lay this area out like everyone else 1587 * does. 1588 * 1589 * The Linux driver uses a much more complex scheme whereby several 1590 * header records are kept for each queue. We use a couple of generic 1591 * list manipulation functions which 'know' the size of each list by 1592 * virtue of a table. 1593 */ 1594 qoffset = offsetof(struct aac_common, ac_qbuf) + AAC_QUEUE_ALIGN; 1595 qoffset &= ~(AAC_QUEUE_ALIGN - 1); 1596 sc->aac_queues = 1597 (struct aac_queue_table *)((uintptr_t)sc->aac_common + qoffset); 1598 ip->CommHeaderAddress = sc->aac_common_busaddr + qoffset; 1599 1600 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1601 AAC_HOST_NORM_CMD_ENTRIES; 1602 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1603 AAC_HOST_NORM_CMD_ENTRIES; 1604 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1605 AAC_HOST_HIGH_CMD_ENTRIES; 1606 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1607 AAC_HOST_HIGH_CMD_ENTRIES; 1608 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1609 AAC_ADAP_NORM_CMD_ENTRIES; 1610 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1611 AAC_ADAP_NORM_CMD_ENTRIES; 1612 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1613 AAC_ADAP_HIGH_CMD_ENTRIES; 1614 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1615 AAC_ADAP_HIGH_CMD_ENTRIES; 1616 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1617 AAC_HOST_NORM_RESP_ENTRIES; 1618 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1619 AAC_HOST_NORM_RESP_ENTRIES; 1620 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1621 AAC_HOST_HIGH_RESP_ENTRIES; 1622 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1623 AAC_HOST_HIGH_RESP_ENTRIES; 1624 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1625 AAC_ADAP_NORM_RESP_ENTRIES; 1626 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1627 AAC_ADAP_NORM_RESP_ENTRIES; 1628 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]= 1629 AAC_ADAP_HIGH_RESP_ENTRIES; 1630 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]= 1631 AAC_ADAP_HIGH_RESP_ENTRIES; 1632 sc->aac_qentries[AAC_HOST_NORM_CMD_QUEUE] = 1633 &sc->aac_queues->qt_HostNormCmdQueue[0]; 1634 sc->aac_qentries[AAC_HOST_HIGH_CMD_QUEUE] = 1635 &sc->aac_queues->qt_HostHighCmdQueue[0]; 1636 sc->aac_qentries[AAC_ADAP_NORM_CMD_QUEUE] = 1637 &sc->aac_queues->qt_AdapNormCmdQueue[0]; 1638 sc->aac_qentries[AAC_ADAP_HIGH_CMD_QUEUE] = 1639 &sc->aac_queues->qt_AdapHighCmdQueue[0]; 1640 sc->aac_qentries[AAC_HOST_NORM_RESP_QUEUE] = 1641 &sc->aac_queues->qt_HostNormRespQueue[0]; 1642 sc->aac_qentries[AAC_HOST_HIGH_RESP_QUEUE] = 1643 &sc->aac_queues->qt_HostHighRespQueue[0]; 1644 sc->aac_qentries[AAC_ADAP_NORM_RESP_QUEUE] = 1645 &sc->aac_queues->qt_AdapNormRespQueue[0]; 1646 sc->aac_qentries[AAC_ADAP_HIGH_RESP_QUEUE] = 1647 &sc->aac_queues->qt_AdapHighRespQueue[0]; 1648 1649 /* 1650 * Do controller-type-specific initialisation 1651 */ 1652 switch (sc->aac_hwif) { 1653 case AAC_HWIF_I960RX: 1654 AAC_SETREG4(sc, AAC_RX_ODBR, ~0); 1655 break; 1656 case AAC_HWIF_RKT: 1657 AAC_SETREG4(sc, AAC_RKT_ODBR, ~0); 1658 break; 1659 default: 1660 break; 1661 } 1662 1663 /* 1664 * Give the init structure to the controller. 1665 */ 1666 if (aac_sync_command(sc, AAC_MONKER_INITSTRUCT, 1667 sc->aac_common_busaddr + 1668 offsetof(struct aac_common, ac_init), 0, 0, 0, 1669 NULL)) { 1670 device_printf(sc->aac_dev, 1671 "error establishing init structure\n"); 1672 error = EIO; 1673 goto out; 1674 } 1675 1676 error = 0; 1677 out: 1678 return(error); 1679 } 1680 1681 /* 1682 * Send a synchronous command to the controller and wait for a result. 1683 */ 1684 static int 1685 aac_sync_command(struct aac_softc *sc, u_int32_t command, 1686 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3, 1687 u_int32_t *sp) 1688 { 1689 time_t then; 1690 u_int32_t status; 1691 1692 debug_called(3); 1693 1694 /* populate the mailbox */ 1695 AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3); 1696 1697 /* ensure the sync command doorbell flag is cleared */ 1698 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1699 1700 /* then set it to signal the adapter */ 1701 AAC_QNOTIFY(sc, AAC_DB_SYNC_COMMAND); 1702 1703 /* spin waiting for the command to complete */ 1704 then = time_uptime; 1705 do { 1706 if (time_uptime > (then + AAC_IMMEDIATE_TIMEOUT)) { 1707 debug(1, "timed out"); 1708 return(EIO); 1709 } 1710 } while (!(AAC_GET_ISTATUS(sc) & AAC_DB_SYNC_COMMAND)); 1711 1712 /* clear the completion flag */ 1713 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1714 1715 /* get the command status */ 1716 status = AAC_GET_MAILBOX(sc, 0); 1717 if (sp != NULL) 1718 *sp = status; 1719 return(0); 1720 } 1721 1722 int 1723 aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate, 1724 struct aac_fib *fib, u_int16_t datasize) 1725 { 1726 debug_called(3); 1727 1728 if (datasize > AAC_FIB_DATASIZE) 1729 return(EINVAL); 1730 1731 /* 1732 * Set up the sync FIB 1733 */ 1734 fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED | 1735 AAC_FIBSTATE_INITIALISED | 1736 AAC_FIBSTATE_EMPTY; 1737 fib->Header.XferState |= xferstate; 1738 fib->Header.Command = command; 1739 fib->Header.StructType = AAC_FIBTYPE_TFIB; 1740 fib->Header.Size = sizeof(struct aac_fib) + datasize; 1741 fib->Header.SenderSize = sizeof(struct aac_fib); 1742 fib->Header.SenderFibAddress = 0; /* Not needed */ 1743 fib->Header.ReceiverFibAddress = sc->aac_common_busaddr + 1744 offsetof(struct aac_common, 1745 ac_sync_fib); 1746 1747 /* 1748 * Give the FIB to the controller, wait for a response. 1749 */ 1750 if (aac_sync_command(sc, AAC_MONKER_SYNCFIB, 1751 fib->Header.ReceiverFibAddress, 0, 0, 0, NULL)) { 1752 debug(2, "IO error"); 1753 return(EIO); 1754 } 1755 1756 return (0); 1757 } 1758 1759 /* 1760 * Adapter-space FIB queue manipulation 1761 * 1762 * Note that the queue implementation here is a little funky; neither the PI or 1763 * CI will ever be zero. This behaviour is a controller feature. 1764 */ 1765 static struct { 1766 int size; 1767 int notify; 1768 } aac_qinfo[] = { 1769 {AAC_HOST_NORM_CMD_ENTRIES, AAC_DB_COMMAND_NOT_FULL}, 1770 {AAC_HOST_HIGH_CMD_ENTRIES, 0}, 1771 {AAC_ADAP_NORM_CMD_ENTRIES, AAC_DB_COMMAND_READY}, 1772 {AAC_ADAP_HIGH_CMD_ENTRIES, 0}, 1773 {AAC_HOST_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_NOT_FULL}, 1774 {AAC_HOST_HIGH_RESP_ENTRIES, 0}, 1775 {AAC_ADAP_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_READY}, 1776 {AAC_ADAP_HIGH_RESP_ENTRIES, 0} 1777 }; 1778 1779 /* 1780 * Atomically insert an entry into the nominated queue, returns 0 on success or 1781 * EBUSY if the queue is full. 1782 * 1783 * Note: it would be more efficient to defer notifying the controller in 1784 * the case where we may be inserting several entries in rapid succession, 1785 * but implementing this usefully may be difficult (it would involve a 1786 * separate queue/notify interface). 1787 */ 1788 static int 1789 aac_enqueue_fib(struct aac_softc *sc, int queue, struct aac_command *cm) 1790 { 1791 u_int32_t pi, ci; 1792 int error; 1793 u_int32_t fib_size; 1794 u_int32_t fib_addr; 1795 1796 debug_called(3); 1797 1798 fib_size = cm->cm_fib->Header.Size; 1799 fib_addr = cm->cm_fib->Header.ReceiverFibAddress; 1800 1801 /* get the producer/consumer indices */ 1802 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1803 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1804 1805 /* wrap the queue? */ 1806 if (pi >= aac_qinfo[queue].size) 1807 pi = 0; 1808 1809 /* check for queue full */ 1810 if ((pi + 1) == ci) { 1811 error = EBUSY; 1812 goto out; 1813 } 1814 1815 /* 1816 * To avoid a race with its completion interrupt, place this command on 1817 * the busy queue prior to advertising it to the controller. 1818 */ 1819 aac_enqueue_busy(cm); 1820 1821 /* populate queue entry */ 1822 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1823 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1824 1825 /* update producer index */ 1826 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1827 1828 /* notify the adapter if we know how */ 1829 if (aac_qinfo[queue].notify != 0) 1830 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1831 1832 error = 0; 1833 1834 out: 1835 return(error); 1836 } 1837 1838 /* 1839 * Atomically remove one entry from the nominated queue, returns 0 on 1840 * success or ENOENT if the queue is empty. 1841 */ 1842 static int 1843 aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size, 1844 struct aac_fib **fib_addr) 1845 { 1846 u_int32_t pi, ci; 1847 u_int32_t fib_index; 1848 int error; 1849 int notify; 1850 1851 debug_called(3); 1852 1853 /* get the producer/consumer indices */ 1854 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1855 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1856 1857 /* check for queue empty */ 1858 if (ci == pi) { 1859 error = ENOENT; 1860 goto out; 1861 } 1862 1863 /* wrap the pi so the following test works */ 1864 if (pi >= aac_qinfo[queue].size) 1865 pi = 0; 1866 1867 notify = 0; 1868 if (ci == pi + 1) 1869 notify++; 1870 1871 /* wrap the queue? */ 1872 if (ci >= aac_qinfo[queue].size) 1873 ci = 0; 1874 1875 /* fetch the entry */ 1876 *fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size; 1877 1878 switch (queue) { 1879 case AAC_HOST_NORM_CMD_QUEUE: 1880 case AAC_HOST_HIGH_CMD_QUEUE: 1881 /* 1882 * The aq_fib_addr is only 32 bits wide so it can't be counted 1883 * on to hold an address. For AIF's, the adapter assumes 1884 * that it's giving us an address into the array of AIF fibs. 1885 * Therefore, we have to convert it to an index. 1886 */ 1887 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr / 1888 sizeof(struct aac_fib); 1889 *fib_addr = &sc->aac_common->ac_fibs[fib_index]; 1890 break; 1891 1892 case AAC_HOST_NORM_RESP_QUEUE: 1893 case AAC_HOST_HIGH_RESP_QUEUE: 1894 { 1895 struct aac_command *cm; 1896 1897 /* 1898 * As above, an index is used instead of an actual address. 1899 * Gotta shift the index to account for the fast response 1900 * bit. No other correction is needed since this value was 1901 * originally provided by the driver via the SenderFibAddress 1902 * field. 1903 */ 1904 fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr; 1905 cm = sc->aac_commands + (fib_index >> 1); 1906 *fib_addr = cm->cm_fib; 1907 1908 /* 1909 * Is this a fast response? If it is, update the fib fields in 1910 * local memory since the whole fib isn't DMA'd back up. 1911 */ 1912 if (fib_index & 0x01) { 1913 (*fib_addr)->Header.XferState |= AAC_FIBSTATE_DONEADAP; 1914 *((u_int32_t*)((*fib_addr)->data)) = AAC_ERROR_NORMAL; 1915 } 1916 break; 1917 } 1918 default: 1919 panic("Invalid queue in aac_dequeue_fib()"); 1920 break; 1921 } 1922 1923 /* update consumer index */ 1924 sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1; 1925 1926 /* if we have made the queue un-full, notify the adapter */ 1927 if (notify && (aac_qinfo[queue].notify != 0)) 1928 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1929 error = 0; 1930 1931 out: 1932 return(error); 1933 } 1934 1935 /* 1936 * Put our response to an Adapter Initialed Fib on the response queue 1937 */ 1938 static int 1939 aac_enqueue_response(struct aac_softc *sc, int queue, struct aac_fib *fib) 1940 { 1941 u_int32_t pi, ci; 1942 int error; 1943 u_int32_t fib_size; 1944 u_int32_t fib_addr; 1945 1946 debug_called(1); 1947 1948 /* Tell the adapter where the FIB is */ 1949 fib_size = fib->Header.Size; 1950 fib_addr = fib->Header.SenderFibAddress; 1951 fib->Header.ReceiverFibAddress = fib_addr; 1952 1953 /* get the producer/consumer indices */ 1954 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1955 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1956 1957 /* wrap the queue? */ 1958 if (pi >= aac_qinfo[queue].size) 1959 pi = 0; 1960 1961 /* check for queue full */ 1962 if ((pi + 1) == ci) { 1963 error = EBUSY; 1964 goto out; 1965 } 1966 1967 /* populate queue entry */ 1968 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1969 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1970 1971 /* update producer index */ 1972 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1973 1974 /* notify the adapter if we know how */ 1975 if (aac_qinfo[queue].notify != 0) 1976 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1977 1978 error = 0; 1979 1980 out: 1981 return(error); 1982 } 1983 1984 /* 1985 * Check for commands that have been outstanding for a suspiciously long time, 1986 * and complain about them. 1987 */ 1988 static void 1989 aac_timeout(struct aac_softc *sc) 1990 { 1991 struct aac_command *cm; 1992 time_t deadline; 1993 int timedout, code; 1994 1995 /* 1996 * Traverse the busy command list, bitch about late commands once 1997 * only. 1998 */ 1999 timedout = 0; 2000 deadline = time_uptime - AAC_CMD_TIMEOUT; 2001 TAILQ_FOREACH(cm, &sc->aac_busy, cm_link) { 2002 if ((cm->cm_timestamp < deadline) 2003 /* && !(cm->cm_flags & AAC_CMD_TIMEDOUT) */) { 2004 cm->cm_flags |= AAC_CMD_TIMEDOUT; 2005 device_printf(sc->aac_dev, 2006 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", 2007 cm, (int)(time_uptime-cm->cm_timestamp)); 2008 AAC_PRINT_FIB(sc, cm->cm_fib); 2009 timedout++; 2010 } 2011 } 2012 2013 if (timedout) { 2014 code = AAC_GET_FWSTATUS(sc); 2015 if (code != AAC_UP_AND_RUNNING) { 2016 device_printf(sc->aac_dev, "WARNING! Controller is no " 2017 "longer running! code= 0x%x\n", code); 2018 } 2019 } 2020 return; 2021 } 2022 2023 /* 2024 * Interface Function Vectors 2025 */ 2026 2027 /* 2028 * Read the current firmware status word. 2029 */ 2030 static int 2031 aac_sa_get_fwstatus(struct aac_softc *sc) 2032 { 2033 debug_called(3); 2034 2035 return(AAC_GETREG4(sc, AAC_SA_FWSTATUS)); 2036 } 2037 2038 static int 2039 aac_rx_get_fwstatus(struct aac_softc *sc) 2040 { 2041 debug_called(3); 2042 2043 return(AAC_GETREG4(sc, AAC_RX_FWSTATUS)); 2044 } 2045 2046 static int 2047 aac_fa_get_fwstatus(struct aac_softc *sc) 2048 { 2049 int val; 2050 2051 debug_called(3); 2052 2053 val = AAC_GETREG4(sc, AAC_FA_FWSTATUS); 2054 return (val); 2055 } 2056 2057 static int 2058 aac_rkt_get_fwstatus(struct aac_softc *sc) 2059 { 2060 debug_called(3); 2061 2062 return(AAC_GETREG4(sc, AAC_RKT_FWSTATUS)); 2063 } 2064 2065 /* 2066 * Notify the controller of a change in a given queue 2067 */ 2068 2069 static void 2070 aac_sa_qnotify(struct aac_softc *sc, int qbit) 2071 { 2072 debug_called(3); 2073 2074 AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit); 2075 } 2076 2077 static void 2078 aac_rx_qnotify(struct aac_softc *sc, int qbit) 2079 { 2080 debug_called(3); 2081 2082 AAC_SETREG4(sc, AAC_RX_IDBR, qbit); 2083 } 2084 2085 static void 2086 aac_fa_qnotify(struct aac_softc *sc, int qbit) 2087 { 2088 debug_called(3); 2089 2090 AAC_SETREG2(sc, AAC_FA_DOORBELL1, qbit); 2091 AAC_FA_HACK(sc); 2092 } 2093 2094 static void 2095 aac_rkt_qnotify(struct aac_softc *sc, int qbit) 2096 { 2097 debug_called(3); 2098 2099 AAC_SETREG4(sc, AAC_RKT_IDBR, qbit); 2100 } 2101 2102 /* 2103 * Get the interrupt reason bits 2104 */ 2105 static int 2106 aac_sa_get_istatus(struct aac_softc *sc) 2107 { 2108 debug_called(3); 2109 2110 return(AAC_GETREG2(sc, AAC_SA_DOORBELL0)); 2111 } 2112 2113 static int 2114 aac_rx_get_istatus(struct aac_softc *sc) 2115 { 2116 debug_called(3); 2117 2118 return(AAC_GETREG4(sc, AAC_RX_ODBR)); 2119 } 2120 2121 static int 2122 aac_fa_get_istatus(struct aac_softc *sc) 2123 { 2124 int val; 2125 2126 debug_called(3); 2127 2128 val = AAC_GETREG2(sc, AAC_FA_DOORBELL0); 2129 return (val); 2130 } 2131 2132 static int 2133 aac_rkt_get_istatus(struct aac_softc *sc) 2134 { 2135 debug_called(3); 2136 2137 return(AAC_GETREG4(sc, AAC_RKT_ODBR)); 2138 } 2139 2140 /* 2141 * Clear some interrupt reason bits 2142 */ 2143 static void 2144 aac_sa_clear_istatus(struct aac_softc *sc, int mask) 2145 { 2146 debug_called(3); 2147 2148 AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask); 2149 } 2150 2151 static void 2152 aac_rx_clear_istatus(struct aac_softc *sc, int mask) 2153 { 2154 debug_called(3); 2155 2156 AAC_SETREG4(sc, AAC_RX_ODBR, mask); 2157 } 2158 2159 static void 2160 aac_fa_clear_istatus(struct aac_softc *sc, int mask) 2161 { 2162 debug_called(3); 2163 2164 AAC_SETREG2(sc, AAC_FA_DOORBELL0_CLEAR, mask); 2165 AAC_FA_HACK(sc); 2166 } 2167 2168 static void 2169 aac_rkt_clear_istatus(struct aac_softc *sc, int mask) 2170 { 2171 debug_called(3); 2172 2173 AAC_SETREG4(sc, AAC_RKT_ODBR, mask); 2174 } 2175 2176 /* 2177 * Populate the mailbox and set the command word 2178 */ 2179 static void 2180 aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2181 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2182 { 2183 debug_called(4); 2184 2185 AAC_SETREG4(sc, AAC_SA_MAILBOX, command); 2186 AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0); 2187 AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1); 2188 AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2); 2189 AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3); 2190 } 2191 2192 static void 2193 aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 2194 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2195 { 2196 debug_called(4); 2197 2198 AAC_SETREG4(sc, AAC_RX_MAILBOX, command); 2199 AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0); 2200 AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1); 2201 AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2); 2202 AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3); 2203 } 2204 2205 static void 2206 aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command, 2207 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2208 { 2209 debug_called(4); 2210 2211 AAC_SETREG4(sc, AAC_FA_MAILBOX, command); 2212 AAC_FA_HACK(sc); 2213 AAC_SETREG4(sc, AAC_FA_MAILBOX + 4, arg0); 2214 AAC_FA_HACK(sc); 2215 AAC_SETREG4(sc, AAC_FA_MAILBOX + 8, arg1); 2216 AAC_FA_HACK(sc); 2217 AAC_SETREG4(sc, AAC_FA_MAILBOX + 12, arg2); 2218 AAC_FA_HACK(sc); 2219 AAC_SETREG4(sc, AAC_FA_MAILBOX + 16, arg3); 2220 AAC_FA_HACK(sc); 2221 } 2222 2223 static void 2224 aac_rkt_set_mailbox(struct aac_softc *sc, u_int32_t command, u_int32_t arg0, 2225 u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 2226 { 2227 debug_called(4); 2228 2229 AAC_SETREG4(sc, AAC_RKT_MAILBOX, command); 2230 AAC_SETREG4(sc, AAC_RKT_MAILBOX + 4, arg0); 2231 AAC_SETREG4(sc, AAC_RKT_MAILBOX + 8, arg1); 2232 AAC_SETREG4(sc, AAC_RKT_MAILBOX + 12, arg2); 2233 AAC_SETREG4(sc, AAC_RKT_MAILBOX + 16, arg3); 2234 } 2235 2236 /* 2237 * Fetch the immediate command status word 2238 */ 2239 static int 2240 aac_sa_get_mailbox(struct aac_softc *sc, int mb) 2241 { 2242 debug_called(4); 2243 2244 return(AAC_GETREG4(sc, AAC_SA_MAILBOX + (mb * 4))); 2245 } 2246 2247 static int 2248 aac_rx_get_mailbox(struct aac_softc *sc, int mb) 2249 { 2250 debug_called(4); 2251 2252 return(AAC_GETREG4(sc, AAC_RX_MAILBOX + (mb * 4))); 2253 } 2254 2255 static int 2256 aac_fa_get_mailbox(struct aac_softc *sc, int mb) 2257 { 2258 int val; 2259 2260 debug_called(4); 2261 2262 val = AAC_GETREG4(sc, AAC_FA_MAILBOX + (mb * 4)); 2263 return (val); 2264 } 2265 2266 static int 2267 aac_rkt_get_mailbox(struct aac_softc *sc, int mb) 2268 { 2269 debug_called(4); 2270 2271 return(AAC_GETREG4(sc, AAC_RKT_MAILBOX + (mb * 4))); 2272 } 2273 2274 /* 2275 * Set/clear interrupt masks 2276 */ 2277 static void 2278 aac_sa_set_interrupts(struct aac_softc *sc, int enable) 2279 { 2280 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2281 2282 if (enable) { 2283 AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2284 } else { 2285 AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0); 2286 } 2287 } 2288 2289 static void 2290 aac_rx_set_interrupts(struct aac_softc *sc, int enable) 2291 { 2292 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2293 2294 if (enable) { 2295 AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS); 2296 } else { 2297 AAC_SETREG4(sc, AAC_RX_OIMR, ~0); 2298 } 2299 } 2300 2301 static void 2302 aac_fa_set_interrupts(struct aac_softc *sc, int enable) 2303 { 2304 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2305 2306 if (enable) { 2307 AAC_SETREG2((sc), AAC_FA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 2308 AAC_FA_HACK(sc); 2309 } else { 2310 AAC_SETREG2((sc), AAC_FA_MASK0, ~0); 2311 AAC_FA_HACK(sc); 2312 } 2313 } 2314 2315 static void 2316 aac_rkt_set_interrupts(struct aac_softc *sc, int enable) 2317 { 2318 debug(2, "%sable interrupts", enable ? "en" : "dis"); 2319 2320 if (enable) { 2321 AAC_SETREG4(sc, AAC_RKT_OIMR, ~AAC_DB_INTERRUPTS); 2322 } else { 2323 AAC_SETREG4(sc, AAC_RKT_OIMR, ~0); 2324 } 2325 } 2326 2327 /* 2328 * Debugging and Diagnostics 2329 */ 2330 2331 /* 2332 * Print some information about the controller. 2333 */ 2334 static void 2335 aac_describe_controller(struct aac_softc *sc) 2336 { 2337 struct aac_fib *fib; 2338 struct aac_adapter_info *info; 2339 2340 debug_called(2); 2341 2342 aac_alloc_sync_fib(sc, &fib); 2343 2344 fib->data[0] = 0; 2345 if (aac_sync_fib(sc, RequestAdapterInfo, 0, fib, 1)) { 2346 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 2347 aac_release_sync_fib(sc); 2348 return; 2349 } 2350 2351 /* save the kernel revision structure for later use */ 2352 info = (struct aac_adapter_info *)&fib->data[0]; 2353 sc->aac_revision = info->KernelRevision; 2354 2355 if (bootverbose) { 2356 device_printf(sc->aac_dev, "%s %dMHz, %dMB memory " 2357 "(%dMB cache, %dMB execution), %s\n", 2358 aac_describe_code(aac_cpu_variant, info->CpuVariant), 2359 info->ClockSpeed, info->TotalMem / (1024 * 1024), 2360 info->BufferMem / (1024 * 1024), 2361 info->ExecutionMem / (1024 * 1024), 2362 aac_describe_code(aac_battery_platform, 2363 info->batteryPlatform)); 2364 2365 device_printf(sc->aac_dev, 2366 "Kernel %d.%d-%d, Build %d, S/N %6X\n", 2367 info->KernelRevision.external.comp.major, 2368 info->KernelRevision.external.comp.minor, 2369 info->KernelRevision.external.comp.dash, 2370 info->KernelRevision.buildNumber, 2371 (u_int32_t)(info->SerialNumber & 0xffffff)); 2372 2373 device_printf(sc->aac_dev, "Supported Options=%b\n", 2374 sc->supported_options, 2375 "\20" 2376 "\1SNAPSHOT" 2377 "\2CLUSTERS" 2378 "\3WCACHE" 2379 "\4DATA64" 2380 "\5HOSTTIME" 2381 "\6RAID50" 2382 "\7WINDOW4GB" 2383 "\10SCSIUPGD" 2384 "\11SOFTERR" 2385 "\12NORECOND" 2386 "\13SGMAP64" 2387 "\14ALARM" 2388 "\15NONDASD"); 2389 } 2390 aac_release_sync_fib(sc); 2391 } 2392 2393 /* 2394 * Look up a text description of a numeric error code and return a pointer to 2395 * same. 2396 */ 2397 static char * 2398 aac_describe_code(struct aac_code_lookup *table, u_int32_t code) 2399 { 2400 int i; 2401 2402 for (i = 0; table[i].string != NULL; i++) 2403 if (table[i].code == code) 2404 return(table[i].string); 2405 return(table[i + 1].string); 2406 } 2407 2408 /* 2409 * Management Interface 2410 */ 2411 2412 static int 2413 aac_open(struct cdev *dev, int flags, int fmt, d_thread_t *td) 2414 { 2415 struct aac_softc *sc; 2416 2417 debug_called(2); 2418 2419 sc = dev->si_drv1; 2420 2421 /* Check to make sure the device isn't already open */ 2422 if (sc->aac_state & AAC_STATE_OPEN) { 2423 return EBUSY; 2424 } 2425 sc->aac_state |= AAC_STATE_OPEN; 2426 2427 return 0; 2428 } 2429 2430 static int 2431 aac_close(struct cdev *dev, int flags, int fmt, d_thread_t *td) 2432 { 2433 struct aac_softc *sc; 2434 2435 debug_called(2); 2436 2437 sc = dev->si_drv1; 2438 2439 /* Mark this unit as no longer open */ 2440 sc->aac_state &= ~AAC_STATE_OPEN; 2441 2442 return 0; 2443 } 2444 2445 static int 2446 aac_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, d_thread_t *td) 2447 { 2448 union aac_statrequest *as; 2449 struct aac_softc *sc; 2450 int error = 0; 2451 uint32_t cookie; 2452 2453 debug_called(2); 2454 2455 as = (union aac_statrequest *)arg; 2456 sc = dev->si_drv1; 2457 2458 switch (cmd) { 2459 case AACIO_STATS: 2460 switch (as->as_item) { 2461 case AACQ_FREE: 2462 case AACQ_BIO: 2463 case AACQ_READY: 2464 case AACQ_BUSY: 2465 bcopy(&sc->aac_qstat[as->as_item], &as->as_qstat, 2466 sizeof(struct aac_qstat)); 2467 break; 2468 default: 2469 error = ENOENT; 2470 break; 2471 } 2472 break; 2473 2474 case FSACTL_SENDFIB: 2475 arg = *(caddr_t*)arg; 2476 case FSACTL_LNX_SENDFIB: 2477 debug(1, "FSACTL_SENDFIB"); 2478 error = aac_ioctl_sendfib(sc, arg); 2479 break; 2480 case FSACTL_AIF_THREAD: 2481 case FSACTL_LNX_AIF_THREAD: 2482 debug(1, "FSACTL_AIF_THREAD"); 2483 error = EINVAL; 2484 break; 2485 case FSACTL_OPEN_GET_ADAPTER_FIB: 2486 arg = *(caddr_t*)arg; 2487 case FSACTL_LNX_OPEN_GET_ADAPTER_FIB: 2488 debug(1, "FSACTL_OPEN_GET_ADAPTER_FIB"); 2489 /* 2490 * Pass the caller out an AdapterFibContext. 2491 * 2492 * Note that because we only support one opener, we 2493 * basically ignore this. Set the caller's context to a magic 2494 * number just in case. 2495 * 2496 * The Linux code hands the driver a pointer into kernel space, 2497 * and then trusts it when the caller hands it back. Aiee! 2498 * Here, we give it the proc pointer of the per-adapter aif 2499 * thread. It's only used as a sanity check in other calls. 2500 */ 2501 cookie = (uint32_t)(uintptr_t)sc->aifthread; 2502 error = copyout(&cookie, arg, sizeof(cookie)); 2503 break; 2504 case FSACTL_GET_NEXT_ADAPTER_FIB: 2505 arg = *(caddr_t*)arg; 2506 case FSACTL_LNX_GET_NEXT_ADAPTER_FIB: 2507 debug(1, "FSACTL_GET_NEXT_ADAPTER_FIB"); 2508 error = aac_getnext_aif(sc, arg); 2509 break; 2510 case FSACTL_CLOSE_GET_ADAPTER_FIB: 2511 case FSACTL_LNX_CLOSE_GET_ADAPTER_FIB: 2512 debug(1, "FSACTL_CLOSE_GET_ADAPTER_FIB"); 2513 /* don't do anything here */ 2514 break; 2515 case FSACTL_MINIPORT_REV_CHECK: 2516 arg = *(caddr_t*)arg; 2517 case FSACTL_LNX_MINIPORT_REV_CHECK: 2518 debug(1, "FSACTL_MINIPORT_REV_CHECK"); 2519 error = aac_rev_check(sc, arg); 2520 break; 2521 case FSACTL_QUERY_DISK: 2522 arg = *(caddr_t*)arg; 2523 case FSACTL_LNX_QUERY_DISK: 2524 debug(1, "FSACTL_QUERY_DISK"); 2525 error = aac_query_disk(sc, arg); 2526 break; 2527 case FSACTL_DELETE_DISK: 2528 case FSACTL_LNX_DELETE_DISK: 2529 /* 2530 * We don't trust the underland to tell us when to delete a 2531 * container, rather we rely on an AIF coming from the 2532 * controller 2533 */ 2534 error = 0; 2535 break; 2536 default: 2537 debug(1, "unsupported cmd 0x%lx\n", cmd); 2538 error = EINVAL; 2539 break; 2540 } 2541 return(error); 2542 } 2543 2544 static int 2545 aac_poll(struct cdev *dev, int poll_events, d_thread_t *td) 2546 { 2547 struct aac_softc *sc; 2548 int revents; 2549 2550 sc = dev->si_drv1; 2551 revents = 0; 2552 2553 mtx_lock(&sc->aac_aifq_lock); 2554 if ((poll_events & (POLLRDNORM | POLLIN)) != 0) { 2555 if (sc->aac_aifq_tail != sc->aac_aifq_head) 2556 revents |= poll_events & (POLLIN | POLLRDNORM); 2557 } 2558 mtx_unlock(&sc->aac_aifq_lock); 2559 2560 if (revents == 0) { 2561 if (poll_events & (POLLIN | POLLRDNORM)) 2562 selrecord(td, &sc->rcv_select); 2563 } 2564 2565 return (revents); 2566 } 2567 2568 /* 2569 * Send a FIB supplied from userspace 2570 */ 2571 static int 2572 aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib) 2573 { 2574 struct aac_command *cm; 2575 int size, error; 2576 2577 debug_called(2); 2578 2579 cm = NULL; 2580 2581 /* 2582 * Get a command 2583 */ 2584 mtx_lock(&sc->aac_io_lock); 2585 if (aac_alloc_command(sc, &cm)) { 2586 error = EBUSY; 2587 goto out; 2588 } 2589 2590 /* 2591 * Fetch the FIB header, then re-copy to get data as well. 2592 */ 2593 if ((error = copyin(ufib, cm->cm_fib, 2594 sizeof(struct aac_fib_header))) != 0) 2595 goto out; 2596 size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header); 2597 if (size > sizeof(struct aac_fib)) { 2598 device_printf(sc->aac_dev, "incoming FIB oversized (%d > %zd)\n", 2599 size, sizeof(struct aac_fib)); 2600 size = sizeof(struct aac_fib); 2601 } 2602 if ((error = copyin(ufib, cm->cm_fib, size)) != 0) 2603 goto out; 2604 cm->cm_fib->Header.Size = size; 2605 cm->cm_timestamp = time_uptime; 2606 2607 /* 2608 * Pass the FIB to the controller, wait for it to complete. 2609 */ 2610 if ((error = aac_wait_command(cm)) != 0) { 2611 device_printf(sc->aac_dev, 2612 "aac_wait_command return %d\n", error); 2613 goto out; 2614 } 2615 2616 /* 2617 * Copy the FIB and data back out to the caller. 2618 */ 2619 size = cm->cm_fib->Header.Size; 2620 if (size > sizeof(struct aac_fib)) { 2621 device_printf(sc->aac_dev, "outbound FIB oversized (%d > %zd)\n", 2622 size, sizeof(struct aac_fib)); 2623 size = sizeof(struct aac_fib); 2624 } 2625 error = copyout(cm->cm_fib, ufib, size); 2626 2627 out: 2628 if (cm != NULL) { 2629 aac_release_command(cm); 2630 } 2631 2632 mtx_unlock(&sc->aac_io_lock); 2633 return(error); 2634 } 2635 2636 /* 2637 * Handle an AIF sent to us by the controller; queue it for later reference. 2638 * If the queue fills up, then drop the older entries. 2639 */ 2640 static void 2641 aac_handle_aif(struct aac_softc *sc, struct aac_fib *fib) 2642 { 2643 struct aac_aif_command *aif; 2644 struct aac_container *co, *co_next; 2645 struct aac_mntinfo *mi; 2646 struct aac_mntinforesp *mir = NULL; 2647 u_int16_t rsize; 2648 int next, found; 2649 int count = 0, added = 0, i = 0; 2650 2651 debug_called(2); 2652 2653 aif = (struct aac_aif_command*)&fib->data[0]; 2654 aac_print_aif(sc, aif); 2655 2656 /* Is it an event that we should care about? */ 2657 switch (aif->command) { 2658 case AifCmdEventNotify: 2659 switch (aif->data.EN.type) { 2660 case AifEnAddContainer: 2661 case AifEnDeleteContainer: 2662 /* 2663 * A container was added or deleted, but the message 2664 * doesn't tell us anything else! Re-enumerate the 2665 * containers and sort things out. 2666 */ 2667 aac_alloc_sync_fib(sc, &fib); 2668 mi = (struct aac_mntinfo *)&fib->data[0]; 2669 do { 2670 /* 2671 * Ask the controller for its containers one at 2672 * a time. 2673 * XXX What if the controller's list changes 2674 * midway through this enumaration? 2675 * XXX This should be done async. 2676 */ 2677 bzero(mi, sizeof(struct aac_mntinfo)); 2678 mi->Command = VM_NameServe; 2679 mi->MntType = FT_FILESYS; 2680 mi->MntCount = i; 2681 rsize = sizeof(mir); 2682 if (aac_sync_fib(sc, ContainerCommand, 0, fib, 2683 sizeof(struct aac_mntinfo))) { 2684 printf("Error probing container %d\n", 2685 i); 2686 continue; 2687 } 2688 mir = (struct aac_mntinforesp *)&fib->data[0]; 2689 /* XXX Need to check if count changed */ 2690 count = mir->MntRespCount; 2691 /* 2692 * Check the container against our list. 2693 * co->co_found was already set to 0 in a 2694 * previous run. 2695 */ 2696 if ((mir->Status == ST_OK) && 2697 (mir->MntTable[0].VolType != CT_NONE)) { 2698 found = 0; 2699 TAILQ_FOREACH(co, 2700 &sc->aac_container_tqh, 2701 co_link) { 2702 if (co->co_mntobj.ObjectId == 2703 mir->MntTable[0].ObjectId) { 2704 co->co_found = 1; 2705 found = 1; 2706 break; 2707 } 2708 } 2709 /* 2710 * If the container matched, continue 2711 * in the list. 2712 */ 2713 if (found) { 2714 i++; 2715 continue; 2716 } 2717 2718 /* 2719 * This is a new container. Do all the 2720 * appropriate things to set it up. 2721 */ 2722 aac_add_container(sc, mir, 1); 2723 added = 1; 2724 } 2725 i++; 2726 } while ((i < count) && (i < AAC_MAX_CONTAINERS)); 2727 aac_release_sync_fib(sc); 2728 2729 /* 2730 * Go through our list of containers and see which ones 2731 * were not marked 'found'. Since the controller didn't 2732 * list them they must have been deleted. Do the 2733 * appropriate steps to destroy the device. Also reset 2734 * the co->co_found field. 2735 */ 2736 co = TAILQ_FIRST(&sc->aac_container_tqh); 2737 while (co != NULL) { 2738 if (co->co_found == 0) { 2739 device_delete_child(sc->aac_dev, 2740 co->co_disk); 2741 co_next = TAILQ_NEXT(co, co_link); 2742 mtx_lock(&sc->aac_container_lock); 2743 TAILQ_REMOVE(&sc->aac_container_tqh, co, 2744 co_link); 2745 mtx_unlock(&sc->aac_container_lock); 2746 free(co, M_AACBUF); 2747 co = co_next; 2748 } else { 2749 co->co_found = 0; 2750 co = TAILQ_NEXT(co, co_link); 2751 } 2752 } 2753 2754 /* Attach the newly created containers */ 2755 if (added) 2756 bus_generic_attach(sc->aac_dev); 2757 2758 break; 2759 2760 default: 2761 break; 2762 } 2763 2764 default: 2765 break; 2766 } 2767 2768 /* Copy the AIF data to the AIF queue for ioctl retrieval */ 2769 mtx_lock(&sc->aac_aifq_lock); 2770 next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH; 2771 if (next != sc->aac_aifq_tail) { 2772 bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command)); 2773 sc->aac_aifq_head = next; 2774 2775 /* On the off chance that someone is sleeping for an aif... */ 2776 if (sc->aac_state & AAC_STATE_AIF_SLEEPER) 2777 wakeup(sc->aac_aifq); 2778 /* Wakeup any poll()ers */ 2779 selwakeuppri(&sc->rcv_select, PRIBIO); 2780 } 2781 mtx_unlock(&sc->aac_aifq_lock); 2782 2783 return; 2784 } 2785 2786 /* 2787 * Return the Revision of the driver to userspace and check to see if the 2788 * userspace app is possibly compatible. This is extremely bogus since 2789 * our driver doesn't follow Adaptec's versioning system. Cheat by just 2790 * returning what the card reported. 2791 */ 2792 static int 2793 aac_rev_check(struct aac_softc *sc, caddr_t udata) 2794 { 2795 struct aac_rev_check rev_check; 2796 struct aac_rev_check_resp rev_check_resp; 2797 int error = 0; 2798 2799 debug_called(2); 2800 2801 /* 2802 * Copyin the revision struct from userspace 2803 */ 2804 if ((error = copyin(udata, (caddr_t)&rev_check, 2805 sizeof(struct aac_rev_check))) != 0) { 2806 return error; 2807 } 2808 2809 debug(2, "Userland revision= %d\n", 2810 rev_check.callingRevision.buildNumber); 2811 2812 /* 2813 * Doctor up the response struct. 2814 */ 2815 rev_check_resp.possiblyCompatible = 1; 2816 rev_check_resp.adapterSWRevision.external.ul = 2817 sc->aac_revision.external.ul; 2818 rev_check_resp.adapterSWRevision.buildNumber = 2819 sc->aac_revision.buildNumber; 2820 2821 return(copyout((caddr_t)&rev_check_resp, udata, 2822 sizeof(struct aac_rev_check_resp))); 2823 } 2824 2825 /* 2826 * Pass the caller the next AIF in their queue 2827 */ 2828 static int 2829 aac_getnext_aif(struct aac_softc *sc, caddr_t arg) 2830 { 2831 struct get_adapter_fib_ioctl agf; 2832 int error; 2833 2834 debug_called(2); 2835 2836 if ((error = copyin(arg, &agf, sizeof(agf))) == 0) { 2837 2838 /* 2839 * Check the magic number that we gave the caller. 2840 */ 2841 if (agf.AdapterFibContext != (int)(uintptr_t)sc->aifthread) { 2842 error = EFAULT; 2843 } else { 2844 error = aac_return_aif(sc, agf.AifFib); 2845 if ((error == EAGAIN) && (agf.Wait)) { 2846 sc->aac_state |= AAC_STATE_AIF_SLEEPER; 2847 while (error == EAGAIN) { 2848 error = tsleep(sc->aac_aifq, PRIBIO | 2849 PCATCH, "aacaif", 0); 2850 if (error == 0) 2851 error = aac_return_aif(sc, 2852 agf.AifFib); 2853 } 2854 sc->aac_state &= ~AAC_STATE_AIF_SLEEPER; 2855 } 2856 } 2857 } 2858 return(error); 2859 } 2860 2861 /* 2862 * Hand the next AIF off the top of the queue out to userspace. 2863 */ 2864 static int 2865 aac_return_aif(struct aac_softc *sc, caddr_t uptr) 2866 { 2867 int next, error; 2868 2869 debug_called(2); 2870 2871 mtx_lock(&sc->aac_aifq_lock); 2872 if (sc->aac_aifq_tail == sc->aac_aifq_head) { 2873 mtx_unlock(&sc->aac_aifq_lock); 2874 return (EAGAIN); 2875 } 2876 2877 next = (sc->aac_aifq_tail + 1) % AAC_AIFQ_LENGTH; 2878 error = copyout(&sc->aac_aifq[next], uptr, 2879 sizeof(struct aac_aif_command)); 2880 if (error) 2881 device_printf(sc->aac_dev, 2882 "aac_return_aif: copyout returned %d\n", error); 2883 else 2884 sc->aac_aifq_tail = next; 2885 2886 mtx_unlock(&sc->aac_aifq_lock); 2887 return(error); 2888 } 2889 2890 /* 2891 * Give the userland some information about the container. The AAC arch 2892 * expects the driver to be a SCSI passthrough type driver, so it expects 2893 * the containers to have b:t:l numbers. Fake it. 2894 */ 2895 static int 2896 aac_query_disk(struct aac_softc *sc, caddr_t uptr) 2897 { 2898 struct aac_query_disk query_disk; 2899 struct aac_container *co; 2900 struct aac_disk *disk; 2901 int error, id; 2902 2903 debug_called(2); 2904 2905 disk = NULL; 2906 2907 error = copyin(uptr, (caddr_t)&query_disk, 2908 sizeof(struct aac_query_disk)); 2909 if (error) 2910 return (error); 2911 2912 id = query_disk.ContainerNumber; 2913 if (id == -1) 2914 return (EINVAL); 2915 2916 mtx_lock(&sc->aac_container_lock); 2917 TAILQ_FOREACH(co, &sc->aac_container_tqh, co_link) { 2918 if (co->co_mntobj.ObjectId == id) 2919 break; 2920 } 2921 2922 if (co == NULL) { 2923 query_disk.Valid = 0; 2924 query_disk.Locked = 0; 2925 query_disk.Deleted = 1; /* XXX is this right? */ 2926 } else { 2927 disk = device_get_softc(co->co_disk); 2928 query_disk.Valid = 1; 2929 query_disk.Locked = 2930 (disk->ad_flags & AAC_DISK_OPEN) ? 1 : 0; 2931 query_disk.Deleted = 0; 2932 query_disk.Bus = device_get_unit(sc->aac_dev); 2933 query_disk.Target = disk->unit; 2934 query_disk.Lun = 0; 2935 query_disk.UnMapped = 0; 2936 sprintf(&query_disk.diskDeviceName[0], "%s%d", 2937 disk->ad_disk->d_name, disk->ad_disk->d_unit); 2938 } 2939 mtx_unlock(&sc->aac_container_lock); 2940 2941 error = copyout((caddr_t)&query_disk, uptr, 2942 sizeof(struct aac_query_disk)); 2943 2944 return (error); 2945 } 2946 2947 static void 2948 aac_get_bus_info(struct aac_softc *sc) 2949 { 2950 struct aac_fib *fib; 2951 struct aac_ctcfg *c_cmd; 2952 struct aac_ctcfg_resp *c_resp; 2953 struct aac_vmioctl *vmi; 2954 struct aac_vmi_businf_resp *vmi_resp; 2955 struct aac_getbusinf businfo; 2956 struct aac_sim *caminf; 2957 device_t child; 2958 int i, found, error; 2959 2960 aac_alloc_sync_fib(sc, &fib); 2961 c_cmd = (struct aac_ctcfg *)&fib->data[0]; 2962 bzero(c_cmd, sizeof(struct aac_ctcfg)); 2963 2964 c_cmd->Command = VM_ContainerConfig; 2965 c_cmd->cmd = CT_GET_SCSI_METHOD; 2966 c_cmd->param = 0; 2967 2968 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2969 sizeof(struct aac_ctcfg)); 2970 if (error) { 2971 device_printf(sc->aac_dev, "Error %d sending " 2972 "VM_ContainerConfig command\n", error); 2973 aac_release_sync_fib(sc); 2974 return; 2975 } 2976 2977 c_resp = (struct aac_ctcfg_resp *)&fib->data[0]; 2978 if (c_resp->Status != ST_OK) { 2979 device_printf(sc->aac_dev, "VM_ContainerConfig returned 0x%x\n", 2980 c_resp->Status); 2981 aac_release_sync_fib(sc); 2982 return; 2983 } 2984 2985 sc->scsi_method_id = c_resp->param; 2986 2987 vmi = (struct aac_vmioctl *)&fib->data[0]; 2988 bzero(vmi, sizeof(struct aac_vmioctl)); 2989 2990 vmi->Command = VM_Ioctl; 2991 vmi->ObjType = FT_DRIVE; 2992 vmi->MethId = sc->scsi_method_id; 2993 vmi->ObjId = 0; 2994 vmi->IoctlCmd = GetBusInfo; 2995 2996 error = aac_sync_fib(sc, ContainerCommand, 0, fib, 2997 sizeof(struct aac_vmioctl)); 2998 if (error) { 2999 device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n", 3000 error); 3001 aac_release_sync_fib(sc); 3002 return; 3003 } 3004 3005 vmi_resp = (struct aac_vmi_businf_resp *)&fib->data[0]; 3006 if (vmi_resp->Status != ST_OK) { 3007 device_printf(sc->aac_dev, "VM_Ioctl returned %d\n", 3008 vmi_resp->Status); 3009 aac_release_sync_fib(sc); 3010 return; 3011 } 3012 3013 bcopy(&vmi_resp->BusInf, &businfo, sizeof(struct aac_getbusinf)); 3014 aac_release_sync_fib(sc); 3015 3016 found = 0; 3017 for (i = 0; i < businfo.BusCount; i++) { 3018 if (businfo.BusValid[i] != AAC_BUS_VALID) 3019 continue; 3020 3021 caminf = (struct aac_sim *)malloc( sizeof(struct aac_sim), 3022 M_AACBUF, M_NOWAIT | M_ZERO); 3023 if (caminf == NULL) { 3024 device_printf(sc->aac_dev, 3025 "No memory to add passthrough bus %d\n", i); 3026 break; 3027 } 3028 3029 child = device_add_child(sc->aac_dev, "aacp", -1); 3030 if (child == NULL) { 3031 device_printf(sc->aac_dev, 3032 "device_add_child failed for passthrough bus %d\n", 3033 i); 3034 free(caminf, M_AACBUF); 3035 break; 3036 } 3037 3038 caminf->TargetsPerBus = businfo.TargetsPerBus; 3039 caminf->BusNumber = i; 3040 caminf->InitiatorBusId = businfo.InitiatorBusId[i]; 3041 caminf->aac_sc = sc; 3042 caminf->sim_dev = child; 3043 3044 device_set_ivars(child, caminf); 3045 device_set_desc(child, "SCSI Passthrough Bus"); 3046 TAILQ_INSERT_TAIL(&sc->aac_sim_tqh, caminf, sim_link); 3047 3048 found = 1; 3049 } 3050 3051 if (found) 3052 bus_generic_attach(sc->aac_dev); 3053 3054 return; 3055 } 3056