aac.c revision 81150
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: head/sys/dev/aac/aac.c 81150 2001-08-05 06:15:00Z scottl $ 30 */ 31 32/* 33 * Driver for the Adaptec 'FSA' family of PCI/SCSI RAID adapters. 34 */ 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/malloc.h> 39#include <sys/kernel.h> 40 41#include <dev/aac/aac_compat.h> 42 43#include <sys/bus.h> 44#include <sys/conf.h> 45#include <sys/devicestat.h> 46#include <sys/disk.h> 47#include <sys/file.h> 48#include <sys/signalvar.h> 49#include <sys/time.h> 50 51#include <machine/bus_memio.h> 52#include <machine/bus.h> 53#include <machine/resource.h> 54 55#include <dev/aac/aacreg.h> 56#include <dev/aac/aac_ioctl.h> 57#include <dev/aac/aacvar.h> 58#include <dev/aac/aac_tables.h> 59 60devclass_t aac_devclass; 61 62static void aac_startup(void *arg); 63 64/* Command Processing */ 65static void aac_startio(struct aac_softc *sc); 66static void aac_timeout(struct aac_softc *sc); 67static int aac_start(struct aac_command *cm); 68static void aac_complete(void *context, int pending); 69static int aac_bio_command(struct aac_softc *sc, struct aac_command **cmp); 70static void aac_bio_complete(struct aac_command *cm); 71static int aac_wait_command(struct aac_command *cm, int timeout); 72static void aac_host_command(struct aac_softc *sc); 73static void aac_host_response(struct aac_softc *sc); 74 75/* Command Buffer Management */ 76static int aac_alloc_command(struct aac_softc *sc, 77 struct aac_command **cmp); 78static void aac_release_command(struct aac_command *cm); 79static void aac_map_command_helper(void *arg, bus_dma_segment_t *segs, 80 int nseg, int error); 81static int aac_alloc_commands(struct aac_softc *sc); 82static void aac_free_commands(struct aac_softc *sc); 83static void aac_map_command(struct aac_command *cm); 84static void aac_unmap_command(struct aac_command *cm); 85 86/* Hardware Interface */ 87static void aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, 88 int error); 89static int aac_init(struct aac_softc *sc); 90static 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); 93static int aac_sync_fib(struct aac_softc *sc, u_int32_t command, 94 u_int32_t xferstate, void *data, 95 u_int16_t datasize, void *result, 96 u_int16_t *resultsize); 97static int aac_enqueue_fib(struct aac_softc *sc, int queue, 98 u_int32_t fib_size, u_int32_t fib_addr); 99static int aac_dequeue_fib(struct aac_softc *sc, int queue, 100 u_int32_t *fib_size, struct aac_fib **fib_addr); 101 102/* StrongARM interface */ 103static int aac_sa_get_fwstatus(struct aac_softc *sc); 104static void aac_sa_qnotify(struct aac_softc *sc, int qbit); 105static int aac_sa_get_istatus(struct aac_softc *sc); 106static void aac_sa_clear_istatus(struct aac_softc *sc, int mask); 107static void aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 108 u_int32_t arg0, u_int32_t arg1, 109 u_int32_t arg2, u_int32_t arg3); 110static int aac_sa_get_mailboxstatus(struct aac_softc *sc); 111static void aac_sa_set_interrupts(struct aac_softc *sc, int enable); 112 113struct aac_interface aac_sa_interface = { 114 aac_sa_get_fwstatus, 115 aac_sa_qnotify, 116 aac_sa_get_istatus, 117 aac_sa_clear_istatus, 118 aac_sa_set_mailbox, 119 aac_sa_get_mailboxstatus, 120 aac_sa_set_interrupts 121}; 122 123/* i960Rx interface */ 124static int aac_rx_get_fwstatus(struct aac_softc *sc); 125static void aac_rx_qnotify(struct aac_softc *sc, int qbit); 126static int aac_rx_get_istatus(struct aac_softc *sc); 127static void aac_rx_clear_istatus(struct aac_softc *sc, int mask); 128static void aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 129 u_int32_t arg0, u_int32_t arg1, 130 u_int32_t arg2, u_int32_t arg3); 131static int aac_rx_get_mailboxstatus(struct aac_softc *sc); 132static void aac_rx_set_interrupts(struct aac_softc *sc, int enable); 133 134struct aac_interface aac_rx_interface = { 135 aac_rx_get_fwstatus, 136 aac_rx_qnotify, 137 aac_rx_get_istatus, 138 aac_rx_clear_istatus, 139 aac_rx_set_mailbox, 140 aac_rx_get_mailboxstatus, 141 aac_rx_set_interrupts 142}; 143 144/* Debugging and Diagnostics */ 145static void aac_describe_controller(struct aac_softc *sc); 146static char *aac_describe_code(struct aac_code_lookup *table, 147 u_int32_t code); 148 149/* Management Interface */ 150static d_open_t aac_open; 151static d_close_t aac_close; 152static d_ioctl_t aac_ioctl; 153static int aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib); 154static void aac_handle_aif(struct aac_softc *sc, 155 struct aac_aif_command *aif); 156#ifdef AAC_COMPAT_LINUX 157static int aac_linux_rev_check(struct aac_softc *sc, 158 caddr_t udata); 159static int aac_linux_getnext_aif(struct aac_softc *sc, 160 caddr_t arg); 161static int aac_linux_return_aif(struct aac_softc *sc, 162 caddr_t uptr); 163#endif 164 165#define AAC_CDEV_MAJOR 150 166 167static struct cdevsw aac_cdevsw = { 168 aac_open, /* open */ 169 aac_close, /* close */ 170 noread, /* read */ 171 nowrite, /* write */ 172 aac_ioctl, /* ioctl */ 173 nopoll, /* poll */ 174 nommap, /* mmap */ 175 nostrategy, /* strategy */ 176 "aac", /* name */ 177 AAC_CDEV_MAJOR, /* major */ 178 nodump, /* dump */ 179 nopsize, /* psize */ 180 0, /* flags */ 181}; 182 183/****************************************************************************** 184 ****************************************************************************** 185 Device Interface 186 ****************************************************************************** 187 ******************************************************************************/ 188 189/****************************************************************************** 190 * Initialise the controller and softc 191 */ 192int 193aac_attach(struct aac_softc *sc) 194{ 195 int error, unit; 196 197 debug_called(1); 198 199 /* 200 * Initialise per-controller queues. 201 */ 202 aac_initq_free(sc); 203 aac_initq_ready(sc); 204 aac_initq_busy(sc); 205 aac_initq_complete(sc); 206 aac_initq_bio(sc); 207 208#if __FreeBSD_version >= 500005 209 /* 210 * Initialise command-completion task. 211 */ 212 TASK_INIT(&sc->aac_task_complete, 0, aac_complete, sc); 213#endif 214 215 /* disable interrupts before we enable anything */ 216 AAC_MASK_INTERRUPTS(sc); 217 218 /* mark controller as suspended until we get ourselves organised */ 219 sc->aac_state |= AAC_STATE_SUSPEND; 220 221 /* 222 * Allocate command structures. 223 */ 224 if ((error = aac_alloc_commands(sc)) != 0) 225 return(error); 226 227 /* 228 * Initialise the adapter. 229 */ 230 if ((error = aac_init(sc)) != 0) 231 return(error); 232 233 /* 234 * Print a little information about the controller. 235 */ 236 aac_describe_controller(sc); 237 238 /* 239 * Register to probe our containers later. 240 */ 241 sc->aac_ich.ich_func = aac_startup; 242 sc->aac_ich.ich_arg = sc; 243 if (config_intrhook_establish(&sc->aac_ich) != 0) { 244 device_printf(sc->aac_dev, "can't establish configuration hook\n"); 245 return(ENXIO); 246 } 247 248 /* 249 * Make the control device. 250 */ 251 unit = device_get_unit(sc->aac_dev); 252 sc->aac_dev_t = make_dev(&aac_cdevsw, unit, UID_ROOT, GID_WHEEL, 0644, 253 "aac%d", unit); 254 (void)make_dev_alias(sc->aac_dev_t, "afa%d", unit); 255 (void)make_dev_alias(sc->aac_dev_t, "hpn%d", unit); 256 257 sc->aac_dev_t->si_drv1 = sc; 258 259 return(0); 260} 261 262/****************************************************************************** 263 * Probe for containers, create disks. 264 */ 265static void 266aac_startup(void *arg) 267{ 268 struct aac_softc *sc = (struct aac_softc *)arg; 269 struct aac_mntinfo mi; 270 struct aac_mntinforesponse mir; 271 device_t child; 272 u_int16_t rsize; 273 int i; 274 275 debug_called(1); 276 277 /* disconnect ourselves from the intrhook chain */ 278 config_intrhook_disestablish(&sc->aac_ich); 279 280 /* loop over possible containers */ 281 mi.Command = VM_NameServe; 282 mi.MntType = FT_FILESYS; 283 for (i = 0; i < AAC_MAX_CONTAINERS; i++) { 284 /* request information on this container */ 285 mi.MntCount = i; 286 if (aac_sync_fib(sc, ContainerCommand, 0, &mi, 287 sizeof(struct aac_mntinfo), &mir, &rsize)) { 288 debug(2, "error probing container %d", i); 289 continue; 290 } 291 /* check response size */ 292 if (rsize != sizeof(mir)) { 293 debug(2, "container info response wrong size (%d should be %d)", 294 rsize, sizeof(mir)); 295 continue; 296 } 297 /* 298 * Check container volume type for validity. Note that many of the 299 * possible types may never show up. 300 */ 301 if ((mir.Status == ST_OK) && (mir.MntTable[0].VolType != CT_NONE)) { 302 debug(1, "%d: id %x name '%.16s' size %u type %d", 303 i, mir.MntTable[0].ObjectId, 304 mir.MntTable[0].FileSystemName, mir.MntTable[0].Capacity, 305 mir.MntTable[0].VolType); 306 307 if ((child = device_add_child(sc->aac_dev, NULL, -1)) == NULL) { 308 device_printf(sc->aac_dev, "device_add_child failed\n"); 309 } else { 310 device_set_ivars(child, &sc->aac_container[i]); 311 } 312 device_set_desc(child, aac_describe_code(aac_container_types, 313 mir.MntTable[0].VolType)); 314 sc->aac_container[i].co_disk = child; 315 sc->aac_container[i].co_mntobj = mir.MntTable[0]; 316 } 317 } 318 319 /* poke the bus to actually attach the child devices */ 320 if (bus_generic_attach(sc->aac_dev)) 321 device_printf(sc->aac_dev, "bus_generic_attach failed\n"); 322 323 /* mark the controller up */ 324 sc->aac_state &= ~AAC_STATE_SUSPEND; 325 326 /* enable interrupts now */ 327 AAC_UNMASK_INTERRUPTS(sc); 328 329 /* enable the timeout watchdog */ 330 timeout((timeout_t*)aac_timeout, sc, AAC_PERIODIC_INTERVAL * hz); 331} 332 333/****************************************************************************** 334 * Free all of the resources associated with (sc) 335 * 336 * Should not be called if the controller is active. 337 */ 338void 339aac_free(struct aac_softc *sc) 340{ 341 debug_called(1); 342 343 /* remove the control device */ 344 if (sc->aac_dev_t != NULL) 345 destroy_dev(sc->aac_dev_t); 346 347 /* throw away any FIB buffers, discard the FIB DMA tag */ 348 if (sc->aac_fibs != NULL) 349 aac_free_commands(sc); 350 if (sc->aac_fib_dmat) 351 bus_dma_tag_destroy(sc->aac_fib_dmat); 352 353 /* destroy the common area */ 354 if (sc->aac_common) { 355 bus_dmamap_unload(sc->aac_common_dmat, sc->aac_common_dmamap); 356 bus_dmamem_free(sc->aac_common_dmat, sc->aac_common, 357 sc->aac_common_dmamap); 358 } 359 if (sc->aac_common_dmat) 360 bus_dma_tag_destroy(sc->aac_common_dmat); 361 362 /* disconnect the interrupt handler */ 363 if (sc->aac_intr) 364 bus_teardown_intr(sc->aac_dev, sc->aac_irq, sc->aac_intr); 365 if (sc->aac_irq != NULL) 366 bus_release_resource(sc->aac_dev, SYS_RES_IRQ, sc->aac_irq_rid, 367 sc->aac_irq); 368 369 /* destroy data-transfer DMA tag */ 370 if (sc->aac_buffer_dmat) 371 bus_dma_tag_destroy(sc->aac_buffer_dmat); 372 373 /* destroy the parent DMA tag */ 374 if (sc->aac_parent_dmat) 375 bus_dma_tag_destroy(sc->aac_parent_dmat); 376 377 /* release the register window mapping */ 378 if (sc->aac_regs_resource != NULL) 379 bus_release_resource(sc->aac_dev, SYS_RES_MEMORY, sc->aac_regs_rid, 380 sc->aac_regs_resource); 381} 382 383/****************************************************************************** 384 * Disconnect from the controller completely, in preparation for unload. 385 */ 386int 387aac_detach(device_t dev) 388{ 389 struct aac_softc *sc = device_get_softc(dev); 390 int error; 391 392 debug_called(1); 393 394 if (sc->aac_state & AAC_STATE_OPEN) 395 return(EBUSY); 396 397 if ((error = aac_shutdown(dev))) 398 return(error); 399 400 aac_free(sc); 401 402 return(0); 403} 404 405/****************************************************************************** 406 * Bring the controller down to a dormant state and detach all child devices. 407 * 408 * This function is called before detach or system shutdown. 409 * 410 * Note that we can assume that the bioq on the controller is empty, as we won't 411 * allow shutdown if any device is open. 412 */ 413int 414aac_shutdown(device_t dev) 415{ 416 struct aac_softc *sc = device_get_softc(dev); 417 struct aac_close_command cc; 418 int s, i; 419 420 debug_called(1); 421 422 s = splbio(); 423 424 sc->aac_state |= AAC_STATE_SUSPEND; 425 426 /* 427 * Send a Container shutdown followed by a HostShutdown FIB to the 428 * controller to convince it that we don't want to talk to it anymore. 429 * We've been closed and all I/O completed already 430 */ 431 device_printf(sc->aac_dev, "shutting down controller..."); 432 433 cc.Command = VM_CloseAll; 434 cc.ContainerId = 0xffffffff; 435 if (aac_sync_fib(sc, ContainerCommand, 0, &cc, sizeof(cc), NULL, NULL)) { 436 printf("FAILED.\n"); 437 } else { 438 i = 0; 439 if (aac_sync_fib(sc, FsaHostShutdown, AAC_FIBSTATE_SHUTDOWN, &i, 440 sizeof(i), NULL, NULL)) { 441 printf("FAILED.\n"); 442 } else { 443 printf("done.\n"); 444 } 445 } 446 447 AAC_MASK_INTERRUPTS(sc); 448 449 splx(s); 450 return(0); 451} 452 453/****************************************************************************** 454 * Bring the controller to a quiescent state, ready for system suspend. 455 */ 456int 457aac_suspend(device_t dev) 458{ 459 struct aac_softc *sc = device_get_softc(dev); 460 int s; 461 462 debug_called(1); 463 s = splbio(); 464 465 sc->aac_state |= AAC_STATE_SUSPEND; 466 467 AAC_MASK_INTERRUPTS(sc); 468 splx(s); 469 return(0); 470} 471 472/****************************************************************************** 473 * Bring the controller back to a state ready for operation. 474 */ 475int 476aac_resume(device_t dev) 477{ 478 struct aac_softc *sc = device_get_softc(dev); 479 480 debug_called(1); 481 sc->aac_state &= ~AAC_STATE_SUSPEND; 482 AAC_UNMASK_INTERRUPTS(sc); 483 return(0); 484} 485 486/****************************************************************************** 487 * Take an interrupt. 488 */ 489void 490aac_intr(void *arg) 491{ 492 struct aac_softc *sc = (struct aac_softc *)arg; 493 u_int16_t reason; 494 495 debug_called(2); 496 497 reason = AAC_GET_ISTATUS(sc); 498 499 /* controller wants to talk to the log? XXX should we defer this? */ 500 if (reason & AAC_DB_PRINTF) { 501 if (sc->aac_common->ac_printf[0]) { 502 device_printf(sc->aac_dev, "** %.*s", AAC_PRINTF_BUFSIZE, 503 sc->aac_common->ac_printf); 504 sc->aac_common->ac_printf[0] = 0; 505 } 506 AAC_CLEAR_ISTATUS(sc, AAC_DB_PRINTF); 507 AAC_QNOTIFY(sc, AAC_DB_PRINTF); 508 } 509 510 /* controller has a message for us? */ 511 if (reason & AAC_DB_COMMAND_READY) { 512 AAC_CLEAR_ISTATUS(sc, AAC_DB_COMMAND_READY); 513 aac_host_command(sc); 514 } 515 516 /* controller has a response for us? */ 517 if (reason & AAC_DB_RESPONSE_READY) { 518 AAC_CLEAR_ISTATUS(sc, AAC_DB_RESPONSE_READY); 519 aac_host_response(sc); 520 } 521 522 /* 523 * spurious interrupts that we don't use - reset the mask and clear the 524 * interrupts 525 */ 526 if (reason & (AAC_DB_COMMAND_NOT_FULL | AAC_DB_RESPONSE_NOT_FULL)) { 527 AAC_UNMASK_INTERRUPTS(sc); 528 AAC_CLEAR_ISTATUS(sc, AAC_DB_COMMAND_NOT_FULL | 529 AAC_DB_RESPONSE_NOT_FULL); 530 } 531}; 532 533/****************************************************************************** 534 ****************************************************************************** 535 Command Processing 536 ****************************************************************************** 537 ******************************************************************************/ 538 539/****************************************************************************** 540 * Start as much queued I/O as possible on the controller 541 */ 542static void 543aac_startio(struct aac_softc *sc) 544{ 545 struct aac_command *cm; 546 547 debug_called(2); 548 549 for(;;) { 550 /* try to get a command that's been put off for lack of resources */ 551 cm = aac_dequeue_ready(sc); 552 553 /* try to build a command off the bio queue (ignore error return) */ 554 if (cm == NULL) 555 aac_bio_command(sc, &cm); 556 557 /* nothing to do? */ 558 if (cm == NULL) 559 break; 560 561 /* try to give the command to the controller */ 562 if (aac_start(cm) == EBUSY) { 563 /* put it on the ready queue for later */ 564 aac_requeue_ready(cm); 565 break; 566 } 567 } 568} 569 570/****************************************************************************** 571 * Deliver a command to the controller; allocate controller resources at the 572 * last moment when possible. 573 */ 574static int 575aac_start(struct aac_command *cm) 576{ 577 struct aac_softc *sc = cm->cm_sc; 578 int error; 579 580 debug_called(2); 581 582 /* get the command mapped */ 583 aac_map_command(cm); 584 585 /* fix up the address values in the FIB */ 586 cm->cm_fib->Header.SenderFibAddress = (u_int32_t)cm->cm_fib; 587 cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys; 588 589 /* save a pointer to the command for speedy reverse-lookup */ 590 cm->cm_fib->Header.SenderData = (u_int32_t)cm; /* XXX 64-bit physical 591 * address issue */ 592 593 /* put the FIB on the outbound queue */ 594 if (aac_enqueue_fib(sc, AAC_ADAP_NORM_CMD_QUEUE, cm->cm_fib->Header.Size, 595 cm->cm_fib->Header.ReceiverFibAddress)) { 596 error = EBUSY; 597 } else { 598 aac_enqueue_busy(cm); 599 error = 0; 600 } 601 return(error); 602} 603 604/****************************************************************************** 605 * Handle notification of one or more FIBs coming from the controller. 606 */ 607static void 608aac_host_command(struct aac_softc *sc) 609{ 610 struct aac_fib *fib; 611 u_int32_t fib_size; 612 613 debug_called(1); 614 615 for (;;) { 616 if (aac_dequeue_fib(sc, AAC_HOST_NORM_CMD_QUEUE, &fib_size, &fib)) 617 break; /* nothing to do */ 618 619 switch(fib->Header.Command) { 620 case AifRequest: 621 aac_handle_aif(sc, (struct aac_aif_command *)&fib->data[0]); 622 break; 623 default: 624 device_printf(sc->aac_dev, "unknown command from controller\n"); 625 AAC_PRINT_FIB(sc, fib); 626 break; 627 } 628 629 /* XXX reply to FIBs requesting responses ?? */ 630 /* XXX how do we return these FIBs to the controller? */ 631 } 632} 633 634/****************************************************************************** 635 * Handle notification of one or more FIBs completed by the controller 636 */ 637static void 638aac_host_response(struct aac_softc *sc) 639{ 640 struct aac_command *cm; 641 struct aac_fib *fib; 642 u_int32_t fib_size; 643 644 debug_called(2); 645 646 for (;;) { 647 /* look for completed FIBs on our queue */ 648 if (aac_dequeue_fib(sc, AAC_HOST_NORM_RESP_QUEUE, &fib_size, &fib)) 649 break; /* nothing to do */ 650 651 /* get the command, unmap and queue for later processing */ 652 cm = (struct aac_command *)fib->Header.SenderData; 653 if (cm == NULL) { 654 AAC_PRINT_FIB(sc, fib); 655 } else { 656 aac_remove_busy(cm); 657 aac_unmap_command(cm); /* XXX defer? */ 658 aac_enqueue_complete(cm); 659 } 660 } 661 662 /* handle completion processing */ 663#if __FreeBSD_version >= 500005 664 taskqueue_enqueue(taskqueue_swi, &sc->aac_task_complete); 665#else 666 aac_complete(sc, 0); 667#endif 668} 669 670/****************************************************************************** 671 * Process completed commands. 672 */ 673static void 674aac_complete(void *context, int pending) 675{ 676 struct aac_softc *sc = (struct aac_softc *)context; 677 struct aac_command *cm; 678 679 debug_called(2); 680 681 /* pull completed commands off the queue */ 682 for (;;) { 683 cm = aac_dequeue_complete(sc); 684 if (cm == NULL) 685 break; 686 cm->cm_flags |= AAC_CMD_COMPLETED; 687 688 /* is there a completion handler? */ 689 if (cm->cm_complete != NULL) { 690 cm->cm_complete(cm); 691 } else { 692 /* assume that someone is sleeping on this command */ 693 wakeup(cm); 694 } 695 } 696 697 /* see if we can start some more I/O */ 698 aac_startio(sc); 699} 700 701/****************************************************************************** 702 * Handle a bio submitted from a disk device. 703 */ 704void 705aac_submit_bio(struct bio *bp) 706{ 707 struct aac_disk *ad = (struct aac_disk *)bp->bio_dev->si_drv1; 708 struct aac_softc *sc = ad->ad_controller; 709 710 debug_called(2); 711 712 /* queue the BIO and try to get some work done */ 713 aac_enqueue_bio(sc, bp); 714 aac_startio(sc); 715} 716 717/****************************************************************************** 718 * Get a bio and build a command to go with it. 719 */ 720static int 721aac_bio_command(struct aac_softc *sc, struct aac_command **cmp) 722{ 723 struct aac_command *cm; 724 struct aac_fib *fib; 725 struct aac_blockread *br; 726 struct aac_blockwrite *bw; 727 struct aac_disk *ad; 728 struct bio *bp; 729 730 debug_called(2); 731 732 /* get the resources we will need */ 733 cm = NULL; 734 if ((bp = aac_dequeue_bio(sc)) == NULL) 735 goto fail; 736 if (aac_alloc_command(sc, &cm)) /* get a command */ 737 goto fail; 738 739 /* fill out the command */ 740 cm->cm_data = (void *)bp->bio_data; 741 cm->cm_datalen = bp->bio_bcount; 742 cm->cm_complete = aac_bio_complete; 743 cm->cm_private = bp; 744 cm->cm_timestamp = time_second; 745 746 /* build the FIB */ 747 fib = cm->cm_fib; 748 fib->Header.XferState = 749 AAC_FIBSTATE_HOSTOWNED | 750 AAC_FIBSTATE_INITIALISED | 751 AAC_FIBSTATE_FROMHOST | 752 AAC_FIBSTATE_REXPECTED | 753 AAC_FIBSTATE_NORM; 754 fib->Header.Command = ContainerCommand; 755 fib->Header.Size = sizeof(struct aac_fib_header); 756 757 /* build the read/write request */ 758 ad = (struct aac_disk *)bp->bio_dev->si_drv1; 759 if (BIO_IS_READ(bp)) { 760 br = (struct aac_blockread *)&fib->data[0]; 761 br->Command = VM_CtBlockRead; 762 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 763 br->BlockNumber = bp->bio_pblkno; 764 br->ByteCount = bp->bio_bcount; 765 fib->Header.Size += sizeof(struct aac_blockread); 766 cm->cm_sgtable = &br->SgMap; 767 cm->cm_flags |= AAC_CMD_DATAIN; 768 } else { 769 bw = (struct aac_blockwrite *)&fib->data[0]; 770 bw->Command = VM_CtBlockWrite; 771 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 772 bw->BlockNumber = bp->bio_pblkno; 773 bw->ByteCount = bp->bio_bcount; 774 bw->Stable = CUNSTABLE; /* XXX what's appropriate here? */ 775 fib->Header.Size += sizeof(struct aac_blockwrite); 776 cm->cm_flags |= AAC_CMD_DATAOUT; 777 cm->cm_sgtable = &bw->SgMap; 778 } 779 780 *cmp = cm; 781 return(0); 782 783fail: 784 if (bp != NULL) 785 aac_enqueue_bio(sc, bp); 786 if (cm != NULL) 787 aac_release_command(cm); 788 return(ENOMEM); 789} 790 791/****************************************************************************** 792 * Handle a bio-instigated command that has been completed. 793 */ 794static void 795aac_bio_complete(struct aac_command *cm) 796{ 797 struct aac_blockread_response *brr; 798 struct aac_blockwrite_response *bwr; 799 struct bio *bp; 800 AAC_FSAStatus status; 801 802 /* fetch relevant status and then release the command */ 803 bp = (struct bio *)cm->cm_private; 804 if (BIO_IS_READ(bp)) { 805 brr = (struct aac_blockread_response *)&cm->cm_fib->data[0]; 806 status = brr->Status; 807 } else { 808 bwr = (struct aac_blockwrite_response *)&cm->cm_fib->data[0]; 809 status = bwr->Status; 810 } 811 aac_release_command(cm); 812 813 /* fix up the bio based on status */ 814 if (status == ST_OK) { 815 bp->bio_resid = 0; 816 } else { 817 bp->bio_error = EIO; 818 bp->bio_flags |= BIO_ERROR; 819 /* pass an error string out to the disk layer */ 820 bp->bio_driver1 = aac_describe_code(aac_command_status_table, status); 821 } 822 aac_biodone(bp); 823} 824 825/****************************************************************************** 826 * Submit a command to the controller, return when it completes. 827 */ 828static int 829aac_wait_command(struct aac_command *cm, int timeout) 830{ 831 int s, error = 0; 832 833 debug_called(2); 834 835 /* Put the command on the ready queue and get things going */ 836 aac_enqueue_ready(cm); 837 aac_startio(cm->cm_sc); 838 s = splbio(); 839 while(!(cm->cm_flags & AAC_CMD_COMPLETED) && (error != EWOULDBLOCK)) { 840 error = tsleep(cm, PRIBIO, "aacwait", timeout * hz); 841 } 842 splx(s); 843 return(error); 844} 845 846/****************************************************************************** 847 ****************************************************************************** 848 Command Buffer Management 849 ****************************************************************************** 850 ******************************************************************************/ 851 852/****************************************************************************** 853 * Allocate a command. 854 */ 855static int 856aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp) 857{ 858 struct aac_command *cm; 859 860 debug_called(3); 861 862 if ((cm = aac_dequeue_free(sc)) == NULL) 863 return(ENOMEM); 864 865 *cmp = cm; 866 return(0); 867} 868 869/****************************************************************************** 870 * Release a command back to the freelist. 871 */ 872static void 873aac_release_command(struct aac_command *cm) 874{ 875 debug_called(3); 876 877 /* (re)initialise the command/FIB */ 878 cm->cm_sgtable = NULL; 879 cm->cm_flags = 0; 880 cm->cm_complete = NULL; 881 cm->cm_private = NULL; 882 cm->cm_fib->Header.XferState = AAC_FIBSTATE_EMPTY; 883 cm->cm_fib->Header.StructType = AAC_FIBTYPE_TFIB; 884 cm->cm_fib->Header.Flags = 0; 885 cm->cm_fib->Header.SenderSize = sizeof(struct aac_fib); 886 887 /* 888 * These are duplicated in aac_start to cover the case where an 889 * intermediate stage may have destroyed them. They're left 890 * initialised here for debugging purposes only. 891 */ 892 cm->cm_fib->Header.SenderFibAddress = (u_int32_t)cm->cm_fib; 893 cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys; 894 895 aac_enqueue_free(cm); 896} 897 898/****************************************************************************** 899 * Map helper for command/FIB allocation. 900 */ 901static void 902aac_map_command_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 903{ 904 struct aac_softc *sc = (struct aac_softc *)arg; 905 906 debug_called(3); 907 908 sc->aac_fibphys = segs[0].ds_addr; 909} 910 911/****************************************************************************** 912 * Allocate and initialise commands/FIBs for this adapter. 913 */ 914static int 915aac_alloc_commands(struct aac_softc *sc) 916{ 917 struct aac_command *cm; 918 int i; 919 920 debug_called(1); 921 922 /* allocate the FIBs in DMAable memory and load them */ 923 if (bus_dmamem_alloc(sc->aac_fib_dmat, (void **)&sc->aac_fibs, 924 BUS_DMA_NOWAIT, &sc->aac_fibmap)) { 925 return(ENOMEM); 926 } 927 bus_dmamap_load(sc->aac_fib_dmat, sc->aac_fibmap, sc->aac_fibs, 928 AAC_FIB_COUNT * sizeof(struct aac_fib), 929 aac_map_command_helper, sc, 0); 930 931 /* initialise constant fields in the command structure */ 932 for (i = 0; i < AAC_FIB_COUNT; i++) { 933 cm = &sc->aac_command[i]; 934 cm->cm_sc = sc; 935 cm->cm_fib = sc->aac_fibs + i; 936 cm->cm_fibphys = sc->aac_fibphys + (i * sizeof(struct aac_fib)); 937 938 if (!bus_dmamap_create(sc->aac_buffer_dmat, 0, &cm->cm_datamap)) 939 aac_release_command(cm); 940 } 941 return(0); 942} 943 944/****************************************************************************** 945 * Free FIBs owned by this adapter. 946 */ 947static void 948aac_free_commands(struct aac_softc *sc) 949{ 950 int i; 951 952 debug_called(1); 953 954 for (i = 0; i < AAC_FIB_COUNT; i++) 955 bus_dmamap_destroy(sc->aac_buffer_dmat, sc->aac_command[i].cm_datamap); 956 bus_dmamap_unload(sc->aac_fib_dmat, sc->aac_fibmap); 957 bus_dmamem_free(sc->aac_fib_dmat, sc->aac_fibs, sc->aac_fibmap); 958} 959 960/****************************************************************************** 961 * Command-mapping helper function - populate this command's s/g table. 962 */ 963static void 964aac_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 965{ 966 struct aac_command *cm = (struct aac_command *)arg; 967 struct aac_fib *fib = cm->cm_fib; 968 struct aac_sg_table *sg; 969 int i; 970 971 debug_called(3); 972 973 /* find the s/g table */ 974 sg = cm->cm_sgtable; 975 976 /* copy into the FIB */ 977 if (sg != NULL) { 978 sg->SgCount = nseg; 979 for (i = 0; i < nseg; i++) { 980 sg->SgEntry[i].SgAddress = segs[i].ds_addr; 981 sg->SgEntry[i].SgByteCount = segs[i].ds_len; 982 } 983 /* update the FIB size for the s/g count */ 984 fib->Header.Size += nseg * sizeof(struct aac_sg_entry); 985 } 986 987} 988 989/****************************************************************************** 990 * Map a command into controller-visible space. 991 */ 992static void 993aac_map_command(struct aac_command *cm) 994{ 995 struct aac_softc *sc = cm->cm_sc; 996 997 debug_called(2); 998 999 /* don't map more than once */ 1000 if (cm->cm_flags & AAC_CMD_MAPPED) 1001 return; 1002 1003 if (cm->cm_datalen != 0) { 1004 bus_dmamap_load(sc->aac_buffer_dmat, cm->cm_datamap, cm->cm_data, 1005 cm->cm_datalen, aac_map_command_sg, cm, 0); 1006 1007 if (cm->cm_flags & AAC_CMD_DATAIN) 1008 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1009 BUS_DMASYNC_PREREAD); 1010 if (cm->cm_flags & AAC_CMD_DATAOUT) 1011 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1012 BUS_DMASYNC_PREWRITE); 1013 } 1014 cm->cm_flags |= AAC_CMD_MAPPED; 1015} 1016 1017/****************************************************************************** 1018 * Unmap a command from controller-visible space. 1019 */ 1020static void 1021aac_unmap_command(struct aac_command *cm) 1022{ 1023 struct aac_softc *sc = cm->cm_sc; 1024 1025 debug_called(2); 1026 1027 if (!(cm->cm_flags & AAC_CMD_MAPPED)) 1028 return; 1029 1030 if (cm->cm_datalen != 0) { 1031 if (cm->cm_flags & AAC_CMD_DATAIN) 1032 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1033 BUS_DMASYNC_POSTREAD); 1034 if (cm->cm_flags & AAC_CMD_DATAOUT) 1035 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, 1036 BUS_DMASYNC_POSTWRITE); 1037 1038 bus_dmamap_unload(sc->aac_buffer_dmat, cm->cm_datamap); 1039 } 1040 cm->cm_flags &= ~AAC_CMD_MAPPED; 1041} 1042 1043/****************************************************************************** 1044 ****************************************************************************** 1045 Hardware Interface 1046 ****************************************************************************** 1047 ******************************************************************************/ 1048 1049/****************************************************************************** 1050 * Initialise the adapter. 1051 */ 1052static void 1053aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1054{ 1055 struct aac_softc *sc = (struct aac_softc *)arg; 1056 1057 debug_called(1); 1058 1059 sc->aac_common_busaddr = segs[0].ds_addr; 1060} 1061 1062static int 1063aac_init(struct aac_softc *sc) 1064{ 1065 struct aac_adapter_init *ip; 1066 time_t then; 1067 u_int32_t code; 1068 u_int8_t *qaddr; 1069 1070 debug_called(1); 1071 1072 /* 1073 * First wait for the adapter to come ready. 1074 */ 1075 then = time_second; 1076 do { 1077 code = AAC_GET_FWSTATUS(sc); 1078 if (code & AAC_SELF_TEST_FAILED) { 1079 device_printf(sc->aac_dev, "FATAL: selftest failed\n"); 1080 return(ENXIO); 1081 } 1082 if (code & AAC_KERNEL_PANIC) { 1083 device_printf(sc->aac_dev, "FATAL: controller kernel panic\n"); 1084 return(ENXIO); 1085 } 1086 if (time_second > (then + AAC_BOOT_TIMEOUT)) { 1087 device_printf(sc->aac_dev, "FATAL: controller not coming ready, " 1088 "status %x\n", code); 1089 return(ENXIO); 1090 } 1091 } while (!(code & AAC_UP_AND_RUNNING)); 1092 1093 /* 1094 * Create DMA tag for the common structure and allocate it. 1095 */ 1096 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1097 1, 0, /* algnmnt, boundary */ 1098 BUS_SPACE_MAXADDR, /* lowaddr */ 1099 BUS_SPACE_MAXADDR, /* highaddr */ 1100 NULL, NULL, /* filter, filterarg */ 1101 sizeof(struct aac_common), 1,/* maxsize, nsegments */ 1102 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 1103 0, /* flags */ 1104 &sc->aac_common_dmat)) { 1105 device_printf(sc->aac_dev, "can't allocate common structure DMA tag\n"); 1106 return(ENOMEM); 1107 } 1108 if (bus_dmamem_alloc(sc->aac_common_dmat, (void **)&sc->aac_common, 1109 BUS_DMA_NOWAIT, &sc->aac_common_dmamap)) { 1110 device_printf(sc->aac_dev, "can't allocate common structure\n"); 1111 return(ENOMEM); 1112 } 1113 bus_dmamap_load(sc->aac_common_dmat, sc->aac_common_dmamap, sc->aac_common, 1114 sizeof(*sc->aac_common), aac_common_map, sc, 0); 1115 bzero(sc->aac_common, sizeof(*sc->aac_common)); 1116 1117 /* 1118 * Fill in the init structure. This tells the adapter about the physical 1119 * location of various important shared data structures. 1120 */ 1121 ip = &sc->aac_common->ac_init; 1122 ip->InitStructRevision = AAC_INIT_STRUCT_REVISION; 1123 1124 ip->AdapterFibsPhysicalAddress = sc->aac_common_busaddr + 1125 offsetof(struct aac_common, ac_fibs); 1126 ip->AdapterFibsVirtualAddress = &sc->aac_common->ac_fibs[0]; 1127 ip->AdapterFibsSize = AAC_ADAPTER_FIBS * sizeof(struct aac_fib); 1128 ip->AdapterFibAlign = sizeof(struct aac_fib); 1129 1130 ip->PrintfBufferAddress = sc->aac_common_busaddr + 1131 offsetof(struct aac_common, ac_printf); 1132 ip->PrintfBufferSize = AAC_PRINTF_BUFSIZE; 1133 1134 ip->HostPhysMemPages = 0; /* not used? */ 1135 ip->HostElapsedSeconds = time_second; /* reset later if invalid */ 1136 1137 /* 1138 * Initialise FIB queues. Note that it appears that the layout of the 1139 * indexes and the segmentation of the entries may be mandated by the 1140 * adapter, which is only told about the base of the queue index fields. 1141 * 1142 * The initial values of the indices are assumed to inform the adapter 1143 * of the sizes of the respective queues, and theoretically it could work 1144 * out the entire layout of the queue structures from this. We take the 1145 * easy route and just lay this area out like everyone else does. 1146 * 1147 * The Linux driver uses a much more complex scheme whereby several header 1148 * records are kept for each queue. We use a couple of generic list 1149 * manipulation functions which 'know' the size of each list by virtue of a 1150 * table. 1151 */ 1152 qaddr = &sc->aac_common->ac_qbuf[0] + AAC_QUEUE_ALIGN; 1153 qaddr -= (u_int32_t)qaddr % AAC_QUEUE_ALIGN; 1154 sc->aac_queues = (struct aac_queue_table *)qaddr; 1155 ip->CommHeaderAddress = sc->aac_common_busaddr + ((u_int32_t)sc->aac_queues 1156 - (u_int32_t)sc->aac_common); 1157 bzero(sc->aac_queues, sizeof(struct aac_queue_table)); 1158 1159 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1160 AAC_HOST_NORM_CMD_ENTRIES; 1161 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1162 AAC_HOST_NORM_CMD_ENTRIES; 1163 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1164 AAC_HOST_HIGH_CMD_ENTRIES; 1165 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1166 AAC_HOST_HIGH_CMD_ENTRIES; 1167 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1168 AAC_ADAP_NORM_CMD_ENTRIES; 1169 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1170 AAC_ADAP_NORM_CMD_ENTRIES; 1171 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = 1172 AAC_ADAP_HIGH_CMD_ENTRIES; 1173 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = 1174 AAC_ADAP_HIGH_CMD_ENTRIES; 1175 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX] = 1176 AAC_HOST_NORM_RESP_ENTRIES; 1177 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX] = 1178 AAC_HOST_NORM_RESP_ENTRIES; 1179 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX] = 1180 AAC_HOST_HIGH_RESP_ENTRIES; 1181 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX] = 1182 AAC_HOST_HIGH_RESP_ENTRIES; 1183 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX] = 1184 AAC_ADAP_NORM_RESP_ENTRIES; 1185 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX] = 1186 AAC_ADAP_NORM_RESP_ENTRIES; 1187 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX] = 1188 AAC_ADAP_HIGH_RESP_ENTRIES; 1189 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX] = 1190 AAC_ADAP_HIGH_RESP_ENTRIES; 1191 sc->aac_qentries[AAC_HOST_NORM_CMD_QUEUE] = 1192 &sc->aac_queues->qt_HostNormCmdQueue[0]; 1193 sc->aac_qentries[AAC_HOST_HIGH_CMD_QUEUE] = 1194 &sc->aac_queues->qt_HostHighCmdQueue[0]; 1195 sc->aac_qentries[AAC_ADAP_NORM_CMD_QUEUE] = 1196 &sc->aac_queues->qt_AdapNormCmdQueue[0]; 1197 sc->aac_qentries[AAC_ADAP_HIGH_CMD_QUEUE] = 1198 &sc->aac_queues->qt_AdapHighCmdQueue[0]; 1199 sc->aac_qentries[AAC_HOST_NORM_RESP_QUEUE] = 1200 &sc->aac_queues->qt_HostNormRespQueue[0]; 1201 sc->aac_qentries[AAC_HOST_HIGH_RESP_QUEUE] = 1202 &sc->aac_queues->qt_HostHighRespQueue[0]; 1203 sc->aac_qentries[AAC_ADAP_NORM_RESP_QUEUE] = 1204 &sc->aac_queues->qt_AdapNormRespQueue[0]; 1205 sc->aac_qentries[AAC_ADAP_HIGH_RESP_QUEUE] = 1206 &sc->aac_queues->qt_AdapHighRespQueue[0]; 1207 1208 /* 1209 * Do controller-type-specific initialisation 1210 */ 1211 switch (sc->aac_hwif) { 1212 case AAC_HWIF_I960RX: 1213 AAC_SETREG4(sc, AAC_RX_ODBR, ~0); 1214 break; 1215 } 1216 1217 /* 1218 * Give the init structure to the controller. 1219 */ 1220 if (aac_sync_command(sc, AAC_MONKER_INITSTRUCT, 1221 sc->aac_common_busaddr + offsetof(struct aac_common, 1222 ac_init), 0, 0, 0, NULL)) { 1223 device_printf(sc->aac_dev, "error establishing init structure\n"); 1224 return(EIO); 1225 } 1226 1227 return(0); 1228} 1229 1230/****************************************************************************** 1231 * Send a synchronous command to the controller and wait for a result. 1232 */ 1233static int 1234aac_sync_command(struct aac_softc *sc, u_int32_t command, 1235 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3, 1236 u_int32_t *sp) 1237{ 1238 time_t then; 1239 u_int32_t status; 1240 1241 debug_called(3); 1242 1243 /* populate the mailbox */ 1244 AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3); 1245 1246 /* ensure the sync command doorbell flag is cleared */ 1247 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1248 1249 /* then set it to signal the adapter */ 1250 AAC_QNOTIFY(sc, AAC_DB_SYNC_COMMAND); 1251 1252 /* spin waiting for the command to complete */ 1253 then = time_second; 1254 do { 1255 if (time_second > (then + AAC_IMMEDIATE_TIMEOUT)) { 1256 debug(2, "timed out"); 1257 return(EIO); 1258 } 1259 } while (!(AAC_GET_ISTATUS(sc) & AAC_DB_SYNC_COMMAND)); 1260 1261 /* clear the completion flag */ 1262 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1263 1264 /* get the command status */ 1265 status = AAC_GET_MAILBOXSTATUS(sc); 1266 if (sp != NULL) 1267 *sp = status; 1268 return(0); 1269} 1270 1271/****************************************************************************** 1272 * Send a synchronous FIB to the controller and wait for a result. 1273 */ 1274static int 1275aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate, 1276 void *data, u_int16_t datasize, 1277 void *result, u_int16_t *resultsize) 1278{ 1279 struct aac_fib *fib = &sc->aac_common->ac_sync_fib; 1280 1281 debug_called(3); 1282 1283 if (datasize > AAC_FIB_DATASIZE) 1284 return(EINVAL); 1285 1286 /* 1287 * Set up the sync FIB 1288 */ 1289 fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED | AAC_FIBSTATE_INITIALISED | 1290 AAC_FIBSTATE_EMPTY; 1291 fib->Header.XferState |= xferstate; 1292 fib->Header.Command = command; 1293 fib->Header.StructType = AAC_FIBTYPE_TFIB; 1294 fib->Header.Size = sizeof(struct aac_fib) + datasize; 1295 fib->Header.SenderSize = sizeof(struct aac_fib); 1296 fib->Header.SenderFibAddress = (u_int32_t)fib; 1297 fib->Header.ReceiverFibAddress = sc->aac_common_busaddr + 1298 offsetof(struct aac_common, ac_sync_fib); 1299 1300 /* 1301 * Copy in data. 1302 */ 1303 if (data != NULL) { 1304 bcopy(data, fib->data, datasize); 1305 fib->Header.XferState |= AAC_FIBSTATE_FROMHOST | AAC_FIBSTATE_NORM; 1306 } 1307 1308 /* 1309 * Give the FIB to the controller, wait for a response. 1310 */ 1311 if (aac_sync_command(sc, AAC_MONKER_SYNCFIB, fib->Header.ReceiverFibAddress, 1312 0, 0, 0, NULL)) { 1313 debug(2, "IO error"); 1314 return(EIO); 1315 } 1316 1317 /* 1318 * Copy out the result 1319 */ 1320 if (result != NULL) { 1321 *resultsize = fib->Header.Size - sizeof(struct aac_fib_header); 1322 bcopy(fib->data, result, *resultsize); 1323 } 1324 return(0); 1325} 1326 1327/******************************************************************************** 1328 * Adapter-space FIB queue manipulation 1329 * 1330 * Note that the queue implementation here is a little funky; neither the PI or 1331 * CI will ever be zero. This behaviour is a controller feature. 1332 */ 1333static struct { 1334 int size; 1335 int notify; 1336} aac_qinfo[] = { 1337 {AAC_HOST_NORM_CMD_ENTRIES, AAC_DB_COMMAND_NOT_FULL}, 1338 {AAC_HOST_HIGH_CMD_ENTRIES, 0}, 1339 {AAC_ADAP_NORM_CMD_ENTRIES, AAC_DB_COMMAND_READY}, 1340 {AAC_ADAP_HIGH_CMD_ENTRIES, 0}, 1341 {AAC_HOST_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_NOT_FULL}, 1342 {AAC_HOST_HIGH_RESP_ENTRIES, 0}, 1343 {AAC_ADAP_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_READY}, 1344 {AAC_ADAP_HIGH_RESP_ENTRIES, 0} 1345}; 1346 1347/* 1348 * Atomically insert an entry into the nominated queue, returns 0 on success or 1349 * EBUSY if the queue is full. 1350 * 1351 * Note: it would be more efficient to defer notifying the controller in 1352 * the case where we may be inserting several entries in rapid succession, 1353 * but implementing this usefully may be difficult (it would involve a 1354 * separate queue/notify interface). 1355 */ 1356static int 1357aac_enqueue_fib(struct aac_softc *sc, int queue, u_int32_t fib_size, 1358 u_int32_t fib_addr) 1359{ 1360 u_int32_t pi, ci; 1361 int s, error; 1362 1363 debug_called(3); 1364 1365 s = splbio(); 1366 1367 /* get the producer/consumer indices */ 1368 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1369 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1370 1371 /* wrap the queue? */ 1372 if (pi >= aac_qinfo[queue].size) 1373 pi = 0; 1374 1375 /* check for queue full */ 1376 if ((pi + 1) == ci) { 1377 error = EBUSY; 1378 goto out; 1379 } 1380 1381 /* populate queue entry */ 1382 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1383 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1384 1385 /* update producer index */ 1386 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1387 1388 /* notify the adapter if we know how */ 1389 if (aac_qinfo[queue].notify != 0) 1390 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1391 1392 error = 0; 1393 1394out: 1395 splx(s); 1396 return(error); 1397} 1398 1399/* 1400 * Atomically remove one entry from the nominated queue, returns 0 on success or 1401 * ENOENT if the queue is empty. 1402 */ 1403static int 1404aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size, 1405 struct aac_fib **fib_addr) 1406{ 1407 u_int32_t pi, ci; 1408 int s, error; 1409 1410 debug_called(3); 1411 1412 s = splbio(); 1413 1414 /* get the producer/consumer indices */ 1415 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1416 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1417 1418 /* check for queue empty */ 1419 if (ci == pi) { 1420 error = ENOENT; 1421 goto out; 1422 } 1423 1424 /* wrap the queue? */ 1425 if (ci >= aac_qinfo[queue].size) 1426 ci = 0; 1427 1428 /* fetch the entry */ 1429 *fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size; 1430 *fib_addr = (struct aac_fib *)(sc->aac_qentries[queue] + ci)->aq_fib_addr; 1431 1432 /* update consumer index */ 1433 sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1; 1434 1435 /* if we have made the queue un-full, notify the adapter */ 1436 if (((pi + 1) == ci) && (aac_qinfo[queue].notify != 0)) 1437 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1438 error = 0; 1439 1440out: 1441 splx(s); 1442 return(error); 1443} 1444 1445/****************************************************************************** 1446 * Check for commands that have been outstanding for a suspiciously long time, 1447 * and complain about them. 1448 */ 1449static void 1450aac_timeout(struct aac_softc *sc) 1451{ 1452 int s; 1453 struct aac_command *cm; 1454 time_t deadline; 1455 1456 /* simulate an interrupt to handle possibly-missed interrupts */ 1457 aac_intr(sc); 1458 1459 /* kick the I/O queue to restart it in the case of deadlock */ 1460 aac_startio(sc); 1461 1462 /* traverse the busy command list, bitch about late commands once only */ 1463 deadline = time_second - AAC_CMD_TIMEOUT; 1464 s = splbio(); 1465 TAILQ_FOREACH(cm, &sc->aac_busy, cm_link) { 1466 if ((cm->cm_timestamp < deadline) && 1467 !(cm->cm_flags & AAC_CMD_TIMEDOUT)) { 1468 cm->cm_flags |= AAC_CMD_TIMEDOUT; 1469 device_printf(sc->aac_dev, "COMMAND TIMED OUT AFTER %d SECONDS\n", 1470 (int)(time_second - cm->cm_timestamp)); 1471 AAC_PRINT_FIB(sc, cm->cm_fib); 1472 } 1473 } 1474 splx(s); 1475 1476 /* reset the timer for next time */ 1477 timeout((timeout_t*)aac_timeout, sc, AAC_PERIODIC_INTERVAL * hz); 1478 return; 1479} 1480 1481/****************************************************************************** 1482 ****************************************************************************** 1483 Interface Function Vectors 1484 ****************************************************************************** 1485 ******************************************************************************/ 1486 1487/****************************************************************************** 1488 * Read the current firmware status word. 1489 */ 1490static int 1491aac_sa_get_fwstatus(struct aac_softc *sc) 1492{ 1493 debug_called(3); 1494 1495 return(AAC_GETREG4(sc, AAC_SA_FWSTATUS)); 1496} 1497 1498static int 1499aac_rx_get_fwstatus(struct aac_softc *sc) 1500{ 1501 debug_called(3); 1502 1503 return(AAC_GETREG4(sc, AAC_RX_FWSTATUS)); 1504} 1505 1506/****************************************************************************** 1507 * Notify the controller of a change in a given queue 1508 */ 1509 1510static void 1511aac_sa_qnotify(struct aac_softc *sc, int qbit) 1512{ 1513 debug_called(3); 1514 1515 AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit); 1516} 1517 1518static void 1519aac_rx_qnotify(struct aac_softc *sc, int qbit) 1520{ 1521 debug_called(3); 1522 1523 AAC_SETREG4(sc, AAC_RX_IDBR, qbit); 1524} 1525 1526/****************************************************************************** 1527 * Get the interrupt reason bits 1528 */ 1529static int 1530aac_sa_get_istatus(struct aac_softc *sc) 1531{ 1532 debug_called(3); 1533 1534 return(AAC_GETREG2(sc, AAC_SA_DOORBELL0)); 1535} 1536 1537static int 1538aac_rx_get_istatus(struct aac_softc *sc) 1539{ 1540 debug_called(3); 1541 1542 return(AAC_GETREG4(sc, AAC_RX_ODBR)); 1543} 1544 1545/****************************************************************************** 1546 * Clear some interrupt reason bits 1547 */ 1548static void 1549aac_sa_clear_istatus(struct aac_softc *sc, int mask) 1550{ 1551 debug_called(3); 1552 1553 AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask); 1554} 1555 1556static void 1557aac_rx_clear_istatus(struct aac_softc *sc, int mask) 1558{ 1559 debug_called(3); 1560 1561 AAC_SETREG4(sc, AAC_RX_ODBR, mask); 1562} 1563 1564/****************************************************************************** 1565 * Populate the mailbox and set the command word 1566 */ 1567static void 1568aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 1569 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 1570{ 1571 debug_called(4); 1572 1573 AAC_SETREG4(sc, AAC_SA_MAILBOX, command); 1574 AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0); 1575 AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1); 1576 AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2); 1577 AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3); 1578} 1579 1580static void 1581aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 1582 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 1583{ 1584 debug_called(4); 1585 1586 AAC_SETREG4(sc, AAC_RX_MAILBOX, command); 1587 AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0); 1588 AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1); 1589 AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2); 1590 AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3); 1591} 1592 1593/****************************************************************************** 1594 * Fetch the immediate command status word 1595 */ 1596static int 1597aac_sa_get_mailboxstatus(struct aac_softc *sc) 1598{ 1599 debug_called(4); 1600 1601 return(AAC_GETREG4(sc, AAC_SA_MAILBOX)); 1602} 1603 1604static int 1605aac_rx_get_mailboxstatus(struct aac_softc *sc) 1606{ 1607 debug_called(4); 1608 1609 return(AAC_GETREG4(sc, AAC_RX_MAILBOX)); 1610} 1611 1612/****************************************************************************** 1613 * Set/clear interrupt masks 1614 */ 1615static void 1616aac_sa_set_interrupts(struct aac_softc *sc, int enable) 1617{ 1618 debug(2, "%sable interrupts", enable ? "en" : "dis"); 1619 1620 if (enable) { 1621 AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 1622 } else { 1623 AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0); 1624 } 1625} 1626 1627static void 1628aac_rx_set_interrupts(struct aac_softc *sc, int enable) 1629{ 1630 debug(2, "%sable interrupts", enable ? "en" : "dis"); 1631 1632 if (enable) { 1633 AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS); 1634 } else { 1635 AAC_SETREG4(sc, AAC_RX_OIMR, ~0); 1636 } 1637} 1638 1639/****************************************************************************** 1640 ****************************************************************************** 1641 Debugging and Diagnostics 1642 ****************************************************************************** 1643 ******************************************************************************/ 1644 1645/****************************************************************************** 1646 * Print some information about the controller. 1647 */ 1648static void 1649aac_describe_controller(struct aac_softc *sc) 1650{ 1651 u_int8_t buf[AAC_FIB_DATASIZE]; /* XXX really a bit big 1652 * for the stack */ 1653 u_int16_t bufsize; 1654 struct aac_adapter_info *info; 1655 u_int8_t arg; 1656 1657 debug_called(2); 1658 1659 arg = 0; 1660 if (aac_sync_fib(sc, RequestAdapterInfo, 0, &arg, sizeof(arg), &buf, 1661 &bufsize)) { 1662 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 1663 return; 1664 } 1665 if (bufsize != sizeof(*info)) { 1666 device_printf(sc->aac_dev, "RequestAdapterInfo returned wrong data " 1667 "size (%d != %d)\n", bufsize, sizeof(*info)); 1668 /*return;*/ 1669 } 1670 info = (struct aac_adapter_info *)&buf[0]; 1671 1672 device_printf(sc->aac_dev, "%s %dMHz, %dMB total memory, %s (%d)\n", 1673 aac_describe_code(aac_cpu_variant, info->CpuVariant), 1674 info->ClockSpeed, info->TotalMem / (1024 * 1024), 1675 aac_describe_code(aac_battery_platform, 1676 info->batteryPlatform), info->batteryPlatform); 1677 1678 /* save the kernel revision structure for later use */ 1679 sc->aac_revision = info->KernelRevision; 1680 device_printf(sc->aac_dev, "Kernel %d.%d-%d, S/N %llx\n", 1681 info->KernelRevision.external.comp.major, 1682 info->KernelRevision.external.comp.minor, 1683 info->KernelRevision.external.comp.dash, 1684 info->SerialNumber); /* XXX format? */ 1685} 1686 1687/****************************************************************************** 1688 * Look up a text description of a numeric error code and return a pointer to 1689 * same. 1690 */ 1691static char * 1692aac_describe_code(struct aac_code_lookup *table, u_int32_t code) 1693{ 1694 int i; 1695 1696 for (i = 0; table[i].string != NULL; i++) 1697 if (table[i].code == code) 1698 return(table[i].string); 1699 return(table[i + 1].string); 1700} 1701 1702/***************************************************************************** 1703 ***************************************************************************** 1704 Management Interface 1705 ***************************************************************************** 1706 *****************************************************************************/ 1707 1708static int 1709aac_open(dev_t dev, int flags, int fmt, struct proc *p) 1710{ 1711 struct aac_softc *sc = dev->si_drv1; 1712 1713 debug_called(2); 1714 1715 /* Check to make sure the device isn't already open */ 1716 if (sc->aac_state & AAC_STATE_OPEN) { 1717 return EBUSY; 1718 } 1719 sc->aac_state |= AAC_STATE_OPEN; 1720 1721 return 0; 1722} 1723 1724static int 1725aac_close(dev_t dev, int flags, int fmt, struct proc *p) 1726{ 1727 struct aac_softc *sc = dev->si_drv1; 1728 1729 debug_called(2); 1730 1731 /* Mark this unit as no longer open */ 1732 sc->aac_state &= ~AAC_STATE_OPEN; 1733 1734 return 0; 1735} 1736 1737static int 1738aac_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p) 1739{ 1740 union aac_statrequest *as = (union aac_statrequest *)arg; 1741 struct aac_softc *sc = dev->si_drv1; 1742 int error = 0; 1743#ifdef AAC_COMPAT_LINUX 1744 int i; 1745#endif 1746 1747 debug_called(2); 1748 1749 switch (cmd) { 1750 case AACIO_STATS: 1751 switch (as->as_item) { 1752 case AACQ_FREE: 1753 case AACQ_BIO: 1754 case AACQ_READY: 1755 case AACQ_BUSY: 1756 case AACQ_COMPLETE: 1757 bcopy(&sc->aac_qstat[as->as_item], &as->as_qstat, 1758 sizeof(struct aac_qstat)); 1759 break; 1760 default: 1761 error = ENOENT; 1762 break; 1763 } 1764 break; 1765 1766#ifdef AAC_COMPAT_LINUX 1767 case FSACTL_SENDFIB: 1768 debug(1, "FSACTL_SENDFIB"); 1769 error = aac_ioctl_sendfib(sc, arg); 1770 break; 1771 case FSACTL_AIF_THREAD: 1772 debug(1, "FSACTL_AIF_THREAD"); 1773 error = EINVAL; 1774 break; 1775 case FSACTL_OPEN_GET_ADAPTER_FIB: 1776 debug(1, "FSACTL_OPEN_GET_ADAPTER_FIB"); 1777 /* 1778 * Pass the caller out an AdapterFibContext. 1779 * 1780 * Note that because we only support one opener, we 1781 * basically ignore this. Set the caller's context to a magic 1782 * number just in case. 1783 * 1784 * The Linux code hands the driver a pointer into kernel space, 1785 * and then trusts it when the caller hands it back. Aiee! 1786 */ 1787 i = AAC_AIF_SILLYMAGIC; 1788 error = copyout(&i, arg, sizeof(i)); 1789 break; 1790 case FSACTL_GET_NEXT_ADAPTER_FIB: 1791 debug(1, "FSACTL_GET_NEXT_ADAPTER_FIB"); 1792 error = aac_linux_getnext_aif(sc, arg); 1793 break; 1794 case FSACTL_CLOSE_GET_ADAPTER_FIB: 1795 debug(1, "FSACTL_CLOSE_GET_ADAPTER_FIB"); 1796 /* don't do anything here */ 1797 break; 1798 case FSACTL_MINIPORT_REV_CHECK: 1799 debug(1, "FSACTL_MINIPORT_REV_CHECK"); 1800 error = aac_linux_rev_check(sc, arg); 1801 break; 1802#endif 1803 default: 1804 device_printf(sc->aac_dev, "unsupported cmd 0x%lx\n", cmd); 1805 error = EINVAL; 1806 break; 1807 } 1808 return(error); 1809} 1810 1811/****************************************************************************** 1812 * Send a FIB supplied from userspace 1813 */ 1814static int 1815aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib) 1816{ 1817 struct aac_command *cm; 1818 int size, error; 1819 1820 debug_called(2); 1821 1822 cm = NULL; 1823 1824 /* 1825 * Get a command 1826 */ 1827 if (aac_alloc_command(sc, &cm)) { 1828 error = EBUSY; 1829 goto out; 1830 } 1831 1832 /* 1833 * Fetch the FIB header, then re-copy to get data as well. 1834 */ 1835 if ((error = copyin(ufib, cm->cm_fib, sizeof(struct aac_fib_header))) != 0) 1836 goto out; 1837 size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header); 1838 if (size > sizeof(struct aac_fib)) { 1839 device_printf(sc->aac_dev, "incoming FIB oversized (%d > %d)\n", size, 1840 sizeof(struct aac_fib)); 1841 size = sizeof(struct aac_fib); 1842 } 1843 if ((error = copyin(ufib, cm->cm_fib, size)) != 0) 1844 goto out; 1845 cm->cm_fib->Header.Size = size; 1846 1847 /* 1848 * Pass the FIB to the controller, wait for it to complete. 1849 */ 1850 if ((error = aac_wait_command(cm, 30)) != 0) /* XXX user timeout? */ 1851 goto out; 1852 1853 /* 1854 * Copy the FIB and data back out to the caller. 1855 */ 1856 size = cm->cm_fib->Header.Size; 1857 if (size > sizeof(struct aac_fib)) { 1858 device_printf(sc->aac_dev, "outbound FIB oversized (%d > %d)\n", size, 1859 sizeof(struct aac_fib)); 1860 size = sizeof(struct aac_fib); 1861 } 1862 error = copyout(cm->cm_fib, ufib, size); 1863 1864out: 1865 if (cm != NULL) 1866 aac_release_command(cm); 1867 return(error); 1868} 1869 1870/****************************************************************************** 1871 * Handle an AIF sent to us by the controller; queue it for later reference. 1872 * 1873 * XXX what's the right thing to do here when the queue is full? Drop the older 1874 * or newer entries? 1875 */ 1876static void 1877aac_handle_aif(struct aac_softc *sc, struct aac_aif_command *aif) 1878{ 1879 int next, s; 1880 1881 debug_called(2); 1882 1883 s = splbio(); 1884 next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH; 1885 if (next != sc->aac_aifq_tail) { 1886 bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command)); 1887 sc->aac_aifq_head = next; 1888 if (sc->aac_state & AAC_STATE_AIF_SLEEPER) 1889 wakeup(sc->aac_aifq); 1890 } 1891 splx(s); 1892 aac_print_aif(sc, aif); 1893} 1894 1895/****************************************************************************** 1896 ****************************************************************************** 1897 Linux Management Interface 1898 ****************************************************************************** 1899 ******************************************************************************/ 1900 1901#ifdef AAC_COMPAT_LINUX 1902 1903#include <sys/proc.h> 1904#include <machine/../linux/linux.h> 1905#include <machine/../linux/linux_proto.h> 1906#include <compat/linux/linux_ioctl.h> 1907 1908#define AAC_LINUX_IOCTL_MIN 0x2000 1909#define AAC_LINUX_IOCTL_MAX 0x21ff 1910 1911static linux_ioctl_function_t aac_linux_ioctl; 1912static struct linux_ioctl_handler aac_handler = {aac_linux_ioctl, 1913 AAC_LINUX_IOCTL_MIN, 1914 AAC_LINUX_IOCTL_MAX}; 1915 1916SYSINIT (aac_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 1917 linux_ioctl_register_handler, &aac_handler); 1918SYSUNINIT(aac_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 1919 linux_ioctl_unregister_handler, &aac_handler); 1920 1921MODULE_DEPEND(aac, linux, 1, 1, 1); 1922 1923static int 1924aac_linux_ioctl(struct proc *p, struct linux_ioctl_args *args) 1925{ 1926 struct file *fp = p->p_fd->fd_ofiles[args->fd]; 1927 u_long cmd = args->cmd; 1928 1929 /* 1930 * Pass the ioctl off to our standard handler. 1931 */ 1932 return(fo_ioctl(fp, cmd, (caddr_t)args->arg, p)); 1933} 1934 1935/****************************************************************************** 1936 * Return the Revision of the driver to userspace and check to see if the 1937 * userspace app is possibly compatible. This is extremely bogus right now 1938 * because I have no idea how to handle the versioning of this driver. It is 1939 * needed, though, to get aaccli working. 1940 */ 1941static int 1942aac_linux_rev_check(struct aac_softc *sc, caddr_t udata) 1943{ 1944 struct aac_rev_check rev_check; 1945 struct aac_rev_check_resp rev_check_resp; 1946 int error = 0; 1947 1948 debug_called(2); 1949 1950 /* 1951 * Copyin the revision struct from userspace 1952 */ 1953 if ((error = copyin(udata, (caddr_t)&rev_check, 1954 sizeof(struct aac_rev_check))) != 0) { 1955 return error; 1956 } 1957 1958 debug(2, "Userland revision= %d\n", rev_check.callingRevision.buildNumber); 1959 1960 /* 1961 * Doctor up the response struct. 1962 */ 1963 rev_check_resp.possiblyCompatible = 1; 1964 rev_check_resp.adapterSWRevision.external.ul = sc->aac_revision.external.ul; 1965 rev_check_resp.adapterSWRevision.buildNumber = sc->aac_revision.buildNumber; 1966 1967 return(copyout((caddr_t)&rev_check_resp, udata, 1968 sizeof(struct aac_rev_check_resp))); 1969} 1970 1971/****************************************************************************** 1972 * Pass the caller the next AIF in their queue 1973 */ 1974static int 1975aac_linux_getnext_aif(struct aac_softc *sc, caddr_t arg) 1976{ 1977 struct get_adapter_fib_ioctl agf; 1978 int error, s; 1979 1980 debug_called(2); 1981 1982 if ((error = copyin(arg, &agf, sizeof(agf))) == 0) { 1983 1984 /* 1985 * Check the magic number that we gave the caller. 1986 */ 1987 if (agf.AdapterFibContext != AAC_AIF_SILLYMAGIC) { 1988 error = EFAULT; 1989 } else { 1990 1991 s = splbio(); 1992 error = aac_linux_return_aif(sc, agf.AifFib); 1993 1994 if ((error == EAGAIN) && (agf.Wait)) { 1995 sc->aac_state |= AAC_STATE_AIF_SLEEPER; 1996 while (error == EAGAIN) { 1997 error = tsleep(sc->aac_aifq, PRIBIO | PCATCH, "aacaif", 0); 1998 if (error == 0) 1999 error = aac_linux_return_aif(sc, agf.AifFib); 2000 } 2001 sc->aac_state &= ~AAC_STATE_AIF_SLEEPER; 2002 } 2003 splx(s); 2004 } 2005 } 2006 return(error); 2007} 2008 2009/****************************************************************************** 2010 * Hand the next AIF off the top of the queue out to userspace. 2011 */ 2012static int 2013aac_linux_return_aif(struct aac_softc *sc, caddr_t uptr) 2014{ 2015 int error, s; 2016 2017 debug_called(2); 2018 2019 s = splbio(); 2020 if (sc->aac_aifq_tail == sc->aac_aifq_head) { 2021 error = EAGAIN; 2022 } else { 2023 error = copyout(&sc->aac_aifq[sc->aac_aifq_tail], uptr, 2024 sizeof(struct aac_aif_command)); 2025 if (!error) 2026 sc->aac_aifq_tail = (sc->aac_aifq_tail + 1) % AAC_AIFQ_LENGTH; 2027 } 2028 splx(s); 2029 return(error); 2030} 2031 2032 2033#endif /* AAC_COMPAT_LINUX */ 2034