1 /*- 2 * Copyright (c) 2000 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 /* 31 * Driver for the Adaptec 'FSA' family of PCI/SCSI RAID adapters. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/kernel.h> 38 39 #include <dev/aac/aac_compat.h> 40 41 #include <sys/bus.h> 42 #include <sys/conf.h> 43 #include <sys/devicestat.h> 44 #include <sys/disk.h> 45 #include <sys/file.h> 46 #include <sys/signalvar.h> 47 48 #include <machine/bus_memio.h> 49 #include <machine/bus.h> 50 #include <machine/resource.h> 51 52 #include <dev/aac/aacreg.h> 53 #include <dev/aac/aacvar.h> 54 #include <dev/aac/aac_tables.h> 55 #include <dev/aac/aac_ioctl.h> 56 57 devclass_t aac_devclass; 58 59 static void aac_startup(void *arg); 60 61 /* Command Processing */ 62 static void aac_startio(struct aac_softc *sc); 63 static void aac_timeout(struct aac_command *cm); 64 static int aac_start(struct aac_command *cm); 65 static void aac_complete(void *context, int pending); 66 static int aac_bio_command(struct aac_softc *sc, struct aac_command **cmp); 67 static void aac_bio_complete(struct aac_command *cm); 68 static int aac_wait_command(struct aac_command *cm, int timeout); 69 static void aac_host_command(struct aac_softc *sc); 70 static void aac_host_response(struct aac_softc *sc); 71 72 /* Command Buffer Management */ 73 static int aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp); 74 static void aac_release_command(struct aac_command *cm); 75 static void aac_map_command_cluster(void *arg, bus_dma_segment_t *segs, int nseg, int error); 76 static void aac_alloc_command_cluster(struct aac_softc *sc); 77 static void aac_free_command_cluster(struct aac_command_cluster *cmc); 78 static void aac_map_command(struct aac_command *cm); 79 static void aac_unmap_command(struct aac_command *cm); 80 81 /* Hardware Interface */ 82 static void aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, int error); 83 static int aac_init(struct aac_softc *sc); 84 static int aac_sync_command(struct aac_softc *sc, u_int32_t command, 85 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3, 86 u_int32_t *sp); 87 static int aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate, 88 void *data, u_int16_t datasize, 89 void *result, u_int16_t *resultsize); 90 static int aac_enqueue_fib(struct aac_softc *sc, int queue, u_int32_t fib_size, u_int32_t fib_addr); 91 static int aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size, struct aac_fib **fib_addr); 92 93 /* StrongARM interface */ 94 static int aac_sa_get_fwstatus(struct aac_softc *sc); 95 static void aac_sa_qnotify(struct aac_softc *sc, int qbit); 96 static int aac_sa_get_istatus(struct aac_softc *sc); 97 static void aac_sa_clear_istatus(struct aac_softc *sc, int mask); 98 static void aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 99 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3); 100 static int aac_sa_get_mailboxstatus(struct aac_softc *sc); 101 static void aac_sa_set_interrupts(struct aac_softc *sc, int enable); 102 103 struct aac_interface aac_sa_interface = { 104 aac_sa_get_fwstatus, 105 aac_sa_qnotify, 106 aac_sa_get_istatus, 107 aac_sa_clear_istatus, 108 aac_sa_set_mailbox, 109 aac_sa_get_mailboxstatus, 110 aac_sa_set_interrupts 111 }; 112 113 /* i960Rx interface */ 114 static int aac_rx_get_fwstatus(struct aac_softc *sc); 115 static void aac_rx_qnotify(struct aac_softc *sc, int qbit); 116 static int aac_rx_get_istatus(struct aac_softc *sc); 117 static void aac_rx_clear_istatus(struct aac_softc *sc, int mask); 118 static void aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 119 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3); 120 static int aac_rx_get_mailboxstatus(struct aac_softc *sc); 121 static void aac_rx_set_interrupts(struct aac_softc *sc, int enable); 122 123 struct aac_interface aac_rx_interface = { 124 aac_rx_get_fwstatus, 125 aac_rx_qnotify, 126 aac_rx_get_istatus, 127 aac_rx_clear_istatus, 128 aac_rx_set_mailbox, 129 aac_rx_get_mailboxstatus, 130 aac_rx_set_interrupts 131 }; 132 133 /* Debugging and Diagnostics */ 134 static void aac_describe_controller(struct aac_softc *sc); 135 static char *aac_describe_code(struct aac_code_lookup *table, u_int32_t code); 136 137 /* Management Interface */ 138 static d_open_t aac_open; 139 static d_close_t aac_close; 140 static d_ioctl_t aac_ioctl; 141 static int aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib); 142 static void aac_handle_aif(struct aac_softc *sc, struct aac_aif_command *aif); 143 static int aac_return_aif(struct aac_softc *sc, caddr_t uptr); 144 #ifdef AAC_COMPAT_LINUX 145 static int aac_linux_rev_check(struct aac_softc *sc, caddr_t udata); 146 static int aac_linux_getnext_aif(struct aac_softc *sc, caddr_t arg); 147 #endif 148 149 #define AAC_CDEV_MAJOR 150 150 151 static struct cdevsw aac_cdevsw = { 152 aac_open, /* open */ 153 aac_close, /* close */ 154 noread, /* read */ 155 nowrite, /* write */ 156 aac_ioctl, /* ioctl */ 157 nopoll, /* poll */ 158 nommap, /* mmap */ 159 nostrategy, /* strategy */ 160 "aac", /* name */ 161 AAC_CDEV_MAJOR, /* major */ 162 nodump, /* dump */ 163 nopsize, /* psize */ 164 0, /* flags */ 165 -1, /* bmaj */ 166 }; 167 168 /* Timeout for giving up on a command sent to the controller */ 169 #ifndef AAC_CMD_TIMEOUT 170 #define AAC_CMD_TIMEOUT 15 171 #endif 172 173 /******************************************************************************** 174 ******************************************************************************** 175 Device Interface 176 ******************************************************************************** 177 ********************************************************************************/ 178 179 /******************************************************************************** 180 * Initialise the controller and softc 181 */ 182 int 183 aac_attach(struct aac_softc *sc) 184 { 185 int error, unit; 186 187 debug_called(1); 188 189 /* 190 * Initialise per-controller queues. 191 */ 192 TAILQ_INIT(&sc->aac_freecmds); 193 TAILQ_INIT(&sc->aac_ready); 194 TAILQ_INIT(&sc->aac_completed); 195 TAILQ_INIT(&sc->aac_clusters); 196 bioq_init(&sc->aac_bioq); 197 198 #if __FreeBSD_version >= 500005 199 /* 200 * Initialise command-completion task. 201 */ 202 TASK_INIT(&sc->aac_task_complete, 0, aac_complete, sc); 203 #endif 204 205 /* disable interrupts before we enable anything */ 206 AAC_MASK_INTERRUPTS(sc); 207 208 /* mark controller as suspended until we get ourselves organised */ 209 sc->aac_state |= AAC_STATE_SUSPEND; 210 211 /* 212 * Initialise the adapter. 213 */ 214 if ((error = aac_init(sc))) 215 return(error); 216 217 /* 218 * Print a little information about the controller. 219 */ 220 aac_describe_controller(sc); 221 222 /* 223 * Register to probe our containers later. 224 */ 225 bzero(&sc->aac_ich, sizeof(struct intr_config_hook)); 226 sc->aac_ich.ich_func = aac_startup; 227 sc->aac_ich.ich_arg = sc; 228 if (config_intrhook_establish(&sc->aac_ich) != 0) { 229 device_printf(sc->aac_dev, "can't establish configuration hook\n"); 230 return(ENXIO); 231 } 232 233 /* 234 * Make the control device. 235 */ 236 unit = device_get_unit(sc->aac_dev); 237 sc->aac_dev_t = make_dev(&aac_cdevsw, unit, UID_ROOT, GID_WHEEL, 0644, "aac%d", unit); 238 sc->aac_dev_t->si_drv1 = sc; 239 240 return(0); 241 } 242 243 /******************************************************************************** 244 * Probe for containers, create disks. 245 */ 246 static void 247 aac_startup(void *arg) 248 { 249 struct aac_softc *sc = (struct aac_softc *)arg; 250 struct aac_mntinfo mi; 251 struct aac_mntinforesponse mir; 252 device_t child; 253 u_int16_t rsize; 254 int i; 255 256 debug_called(1); 257 258 /* disconnect ourselves from the intrhook chain */ 259 config_intrhook_disestablish(&sc->aac_ich); 260 261 /* loop over possible containers */ 262 mi.Command = VM_NameServe; 263 mi.MntType = FT_FILESYS; 264 for (i = 0; i < AAC_MAX_CONTAINERS; i++) { 265 /* request information on this container */ 266 mi.MntCount = i; 267 if (aac_sync_fib(sc, ContainerCommand, 0, &mi, sizeof(struct aac_mntinfo), &mir, &rsize)) { 268 debug(2, "error probing container %d", i); 269 continue; 270 } 271 /* check response size */ 272 if (rsize != sizeof(mir)) { 273 debug(2, "container info response wrong size (%d should be %d)", rsize, sizeof(mir)); 274 continue; 275 } 276 /* 277 * Check container volume type for validity. Note that many of the possible types 278 * may never show up. 279 */ 280 if ((mir.Status == ST_OK) && (mir.MntTable[0].VolType != CT_NONE)) { 281 debug(1, "%d: id %x name '%.16s' size %u type %d", 282 i, mir.MntTable[0].ObjectId, 283 mir.MntTable[0].FileSystemName, mir.MntTable[0].Capacity, 284 mir.MntTable[0].VolType); 285 286 if ((child = device_add_child(sc->aac_dev, NULL, -1)) == NULL) { 287 device_printf(sc->aac_dev, "device_add_child failed\n"); 288 } else { 289 device_set_ivars(child, &sc->aac_container[i]); 290 } 291 device_set_desc(child, aac_describe_code(aac_container_types, mir.MntTable[0].VolType)); 292 sc->aac_container[i].co_disk = child; 293 sc->aac_container[i].co_mntobj = mir.MntTable[0]; 294 } 295 } 296 297 /* poke the bus to actually attach the child devices */ 298 if (bus_generic_attach(sc->aac_dev)) 299 device_printf(sc->aac_dev, "bus_generic_attach failed\n"); 300 301 /* mark the controller up */ 302 sc->aac_state &= ~AAC_STATE_SUSPEND; 303 304 /* enable interrupts now */ 305 AAC_UNMASK_INTERRUPTS(sc); 306 } 307 308 /******************************************************************************** 309 * Free all of the resources associated with (sc) 310 * 311 * Should not be called if the controller is active. 312 * 313 * XXX verify that we are freeing all our resources here... 314 */ 315 void 316 aac_free(struct aac_softc *sc) 317 { 318 struct aac_command_cluster *cmc; 319 320 debug_called(1); 321 322 /* remove the control device */ 323 if (sc->aac_dev_t != NULL) 324 destroy_dev(sc->aac_dev_t); 325 326 /* throw away any command buffers */ 327 while ((cmc = aac_dequeue_cluster(sc)) != NULL) 328 aac_free_command_cluster(cmc); 329 330 /* destroy the common area */ 331 if (sc->aac_common) { 332 bus_dmamap_unload(sc->aac_common_dmat, sc->aac_common_dmamap); 333 bus_dmamem_free(sc->aac_common_dmat, sc->aac_common, sc->aac_common_dmamap); 334 bus_dma_tag_destroy(sc->aac_common_dmat); 335 } 336 337 /* disconnect the interrupt handler */ 338 if (sc->aac_intr) 339 bus_teardown_intr(sc->aac_dev, sc->aac_irq, sc->aac_intr); 340 if (sc->aac_irq != NULL) 341 bus_release_resource(sc->aac_dev, SYS_RES_IRQ, sc->aac_irq_rid, sc->aac_irq); 342 343 /* destroy data-transfer DMA tag */ 344 if (sc->aac_buffer_dmat) 345 bus_dma_tag_destroy(sc->aac_buffer_dmat); 346 347 /* destroy FIB DMA tag */ 348 if (sc->aac_buffer_dmat) 349 bus_dma_tag_destroy(sc->aac_fib_dmat); 350 351 /* destroy the parent DMA tag */ 352 if (sc->aac_parent_dmat) 353 bus_dma_tag_destroy(sc->aac_parent_dmat); 354 355 /* release the register window mapping */ 356 if (sc->aac_regs_resource != NULL) 357 bus_release_resource(sc->aac_dev, SYS_RES_MEMORY, sc->aac_regs_rid, sc->aac_regs_resource); 358 } 359 360 /******************************************************************************** 361 * Disconnect from the controller completely, in preparation for unload. 362 */ 363 int 364 aac_detach(device_t dev) 365 { 366 struct aac_softc *sc = device_get_softc(dev); 367 int error; 368 369 debug_called(1); 370 371 if (sc->aac_state & AAC_STATE_OPEN) 372 return(EBUSY); 373 374 if ((error = aac_shutdown(dev))) 375 return(error); 376 377 aac_free(sc); 378 379 return(0); 380 } 381 382 /******************************************************************************** 383 * Bring the controller down to a dormant state and detach all child devices. 384 * 385 * This function is called before detach or system shutdown. 386 * 387 * Note that we can assume that the camq on the controller is empty, as we won't 388 * allow shutdown if any device is open. 389 */ 390 int 391 aac_shutdown(device_t dev) 392 { 393 struct aac_softc *sc = device_get_softc(dev); 394 struct aac_close_command cc; 395 int s, i; 396 397 debug_called(1); 398 399 s = splbio(); 400 401 sc->aac_state |= AAC_STATE_SUSPEND; 402 403 /* 404 * Send a Container shutdown followed by a HostShutdown FIB to the 405 * controller to convince it that we don't want to talk to it anymore. 406 * We've been closed and all I/O completed already 407 */ 408 device_printf(sc->aac_dev, "shutting down controller..."); 409 410 cc.Command = VM_CloseAll; 411 cc.ContainerId = 0xffffffff; 412 if (aac_sync_fib(sc, ContainerCommand, 0, &cc, sizeof(cc), NULL, NULL)) { 413 printf("FAILED.\n"); 414 } else { 415 i = 0; 416 if (aac_sync_fib(sc, FsaHostShutdown, AAC_FIBSTATE_SHUTDOWN, &i, sizeof(i), NULL, NULL)) { 417 printf("FAILED.\n"); 418 } else { 419 printf("done.\n"); 420 } 421 } 422 423 AAC_MASK_INTERRUPTS(sc); 424 425 splx(s); 426 return(0); 427 } 428 429 /******************************************************************************** 430 * Bring the controller to a quiescent state, ready for system suspend. 431 */ 432 int 433 aac_suspend(device_t dev) 434 { 435 struct aac_softc *sc = device_get_softc(dev); 436 int s; 437 438 debug_called(1); 439 s = splbio(); 440 441 sc->aac_state |= AAC_STATE_SUSPEND; 442 443 AAC_MASK_INTERRUPTS(sc); 444 splx(s); 445 return(0); 446 } 447 448 /******************************************************************************** 449 * Bring the controller back to a state ready for operation. 450 */ 451 int 452 aac_resume(device_t dev) 453 { 454 struct aac_softc *sc = device_get_softc(dev); 455 456 debug_called(1); 457 sc->aac_state &= ~AAC_STATE_SUSPEND; 458 AAC_UNMASK_INTERRUPTS(sc); 459 return(0); 460 } 461 462 /******************************************************************************* 463 * Take an interrupt. 464 */ 465 void 466 aac_intr(void *arg) 467 { 468 struct aac_softc *sc = (struct aac_softc *)arg; 469 u_int16_t reason; 470 471 debug_called(2); 472 473 reason = AAC_GET_ISTATUS(sc); 474 475 /* controller wants to talk to the log? XXX should we defer this? */ 476 if (reason & AAC_DB_PRINTF) { 477 if (sc->aac_common->ac_printf[0]) { 478 device_printf(sc->aac_dev, "** %.*s", AAC_PRINTF_BUFSIZE, sc->aac_common->ac_printf); 479 sc->aac_common->ac_printf[0] = 0; 480 } 481 AAC_CLEAR_ISTATUS(sc, AAC_DB_PRINTF); 482 AAC_QNOTIFY(sc, AAC_DB_PRINTF); 483 } 484 485 /* controller has a message for us? */ 486 if (reason & AAC_DB_COMMAND_READY) { 487 aac_host_command(sc); 488 AAC_CLEAR_ISTATUS(sc, AAC_DB_COMMAND_READY); 489 } 490 491 /* controller has a response for us? */ 492 if (reason & AAC_DB_RESPONSE_READY) { 493 aac_host_response(sc); 494 AAC_CLEAR_ISTATUS(sc, AAC_DB_RESPONSE_READY); 495 } 496 497 /* spurious interrupts that we don't use - reset the mask and clear the interrupts */ 498 if (reason & (AAC_DB_COMMAND_NOT_FULL | AAC_DB_RESPONSE_NOT_FULL)) { 499 AAC_UNMASK_INTERRUPTS(sc); 500 AAC_CLEAR_ISTATUS(sc, AAC_DB_COMMAND_NOT_FULL | AAC_DB_RESPONSE_NOT_FULL); 501 } 502 }; 503 504 /******************************************************************************** 505 ******************************************************************************** 506 Command Processing 507 ******************************************************************************** 508 ********************************************************************************/ 509 510 /******************************************************************************** 511 * Start as much queued I/O as possible on the controller 512 */ 513 static void 514 aac_startio(struct aac_softc *sc) 515 { 516 struct aac_command *cm; 517 518 debug_called(2); 519 520 for(;;) { 521 /* try to get a command that's been put off for lack of resources */ 522 cm = aac_dequeue_ready(sc); 523 524 /* try to build a command off the bio queue (ignore error return) */ 525 aac_bio_command(sc, &cm); 526 527 /* nothing to do? */ 528 if (cm == NULL) 529 break; 530 531 /* Set a timeout for this command to be completed by the controller */ 532 cm->timeout_handle = timeout((timeout_t*)aac_timeout, cm, AAC_CMD_TIMEOUT * hz); 533 534 /* try to give the command to the controller */ 535 if (aac_start(cm) == EBUSY) { 536 /* put it on the ready queue for later */ 537 aac_requeue_ready(cm); 538 break; 539 } 540 } 541 } 542 543 static void 544 aac_timeout(struct aac_command *cm) 545 { 546 struct aac_softc *sc; 547 struct bio *bp; 548 struct aac_disk *ad; 549 550 sc = cm->cm_sc; 551 bp = (struct bio*)cm->cm_private; 552 ad = (struct aac_disk *)bp->bio_dev->si_drv1; 553 554 device_printf(sc->aac_dev, "Timeout waiting for controller to respond to command\n"); 555 556 /* Should try to requeue the command... is it possible? Bail for now */ 557 bp->bio_error = EIO; 558 bp->bio_flags |= BIO_ERROR; 559 devstat_end_transaction_bio(&ad->ad_stats, bp); 560 biodone(bp); 561 aac_release_command(cm); 562 } 563 564 /******************************************************************************** 565 * Deliver a command to the controller; allocate controller resources at the 566 * last moment when possible. 567 */ 568 static int 569 aac_start(struct aac_command *cm) 570 { 571 struct aac_softc *sc = cm->cm_sc; 572 573 debug_called(2); 574 575 /* get the command mapped */ 576 aac_map_command(cm); 577 578 /* fix up the address values */ 579 cm->cm_fib->Header.SenderFibAddress = (u_int32_t)cm->cm_fib; 580 cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys; 581 582 /* save a pointer to the command for speedy reverse-lookup */ 583 cm->cm_fib->Header.SenderData = (u_int32_t)cm; /* XXX ack, sizing */ 584 585 /* put the FIB on the outbound queue */ 586 if (aac_enqueue_fib(sc, AAC_ADAP_NORM_CMD_QUEUE, cm->cm_fib->Header.Size, 587 cm->cm_fib->Header.ReceiverFibAddress)) 588 return(EBUSY); 589 590 return(0); 591 } 592 593 /******************************************************************************** 594 * Handle notification of one or more FIBs coming from the controller. 595 */ 596 static void 597 aac_host_command(struct aac_softc *sc) 598 { 599 struct aac_fib *fib; 600 u_int32_t fib_size; 601 602 debug_called(1); 603 604 for (;;) { 605 if (aac_dequeue_fib(sc, AAC_HOST_NORM_CMD_QUEUE, &fib_size, &fib)) 606 break; /* nothing to do */ 607 608 switch(fib->Header.Command) { 609 case AifRequest: 610 aac_handle_aif(sc, (struct aac_aif_command *)&fib->data[0]); 611 break; 612 default: 613 device_printf(sc->aac_dev, "unknown command from controller\n"); 614 AAC_PRINT_FIB(sc, fib); 615 break; 616 } 617 618 /* XXX reply to FIBs requesting responses ?? */ 619 /* XXX how do we return these FIBs to the controller? */ 620 } 621 } 622 623 /******************************************************************************** 624 * Handle notification of one or more FIBs completed by the controller 625 */ 626 static void 627 aac_host_response(struct aac_softc *sc) 628 { 629 struct aac_command *cm; 630 struct aac_fib *fib; 631 u_int32_t fib_size; 632 633 debug_called(2); 634 635 for (;;) { 636 /* look for completed FIBs on our queue */ 637 if (aac_dequeue_fib(sc, AAC_HOST_NORM_RESP_QUEUE, &fib_size, &fib)) 638 break; /* nothing to do */ 639 640 /* get the command, unmap and queue for later processing */ 641 cm = (struct aac_command *)fib->Header.SenderData; 642 if (cm == NULL) { 643 AAC_PRINT_FIB(sc, fib); 644 } else { 645 aac_unmap_command(cm); /* XXX defer? */ 646 aac_enqueue_completed(cm); 647 } 648 } 649 650 /* handle completion processing */ 651 #if __FreeBSD_version >= 500005 652 taskqueue_enqueue(taskqueue_swi, &sc->aac_task_complete); 653 #else 654 aac_complete(sc, 0); 655 #endif 656 } 657 658 /******************************************************************************** 659 * Process completed commands. 660 */ 661 static void 662 aac_complete(void *context, int pending) 663 { 664 struct aac_softc *sc = (struct aac_softc *)context; 665 struct aac_command *cm; 666 667 debug_called(2); 668 669 /* pull completed commands off the queue */ 670 for (;;) { 671 cm = aac_dequeue_completed(sc); 672 if (cm == NULL) 673 return; 674 cm->cm_flags |= AAC_CMD_COMPLETED; 675 676 /* is there a completion handler? */ 677 if (cm->cm_complete != NULL) { 678 cm->cm_complete(cm); 679 } else { 680 /* assume that someone is sleeping on this command */ 681 wakeup(cm); 682 } 683 } 684 } 685 686 /******************************************************************************** 687 * Handle a bio submitted from a disk device. 688 */ 689 void 690 aac_submit_bio(struct bio *bp) 691 { 692 struct aac_disk *ad = (struct aac_disk *)bp->bio_dev->si_drv1; 693 struct aac_softc *sc = ad->ad_controller; 694 695 debug_called(2); 696 697 /* queue the BIO and try to get some work done */ 698 bioq_insert_tail(&sc->aac_bioq, bp); 699 aac_startio(sc); 700 } 701 702 /******************************************************************************** 703 * Get a bio and build a command to go with it. 704 */ 705 static int 706 aac_bio_command(struct aac_softc *sc, struct aac_command **cmp) 707 { 708 struct aac_command *cm; 709 struct aac_fib *fib; 710 struct aac_blockread *br; 711 struct aac_blockwrite *bw; 712 struct aac_disk *ad; 713 struct bio *bp; 714 int s; 715 716 debug_called(2); 717 718 /* get the resources we will need */ 719 cm = NULL; 720 s = splbio(); 721 if ((bp = bioq_first(&sc->aac_bioq))) 722 bioq_remove(&sc->aac_bioq, bp); 723 splx(s); 724 if (bp == NULL) /* no work? */ 725 goto fail; 726 if (aac_alloc_command(sc, &cm)) /* get a command */ 727 goto fail; 728 729 /* fill out the command */ 730 cm->cm_private = bp; 731 732 /* build the FIB */ 733 fib = cm->cm_fib; 734 fib->Header.XferState = 735 AAC_FIBSTATE_HOSTOWNED | 736 AAC_FIBSTATE_INITIALISED | 737 AAC_FIBSTATE_FROMHOST | 738 AAC_FIBSTATE_REXPECTED | 739 AAC_FIBSTATE_NORM; 740 fib->Header.Command = ContainerCommand; 741 fib->Header.Size = sizeof(struct aac_fib_header); 742 743 /* build the read/write request */ 744 ad = (struct aac_disk *)bp->bio_dev->si_drv1; 745 cm->cm_data = (void *)bp->bio_data; 746 cm->cm_datalen = bp->bio_bcount; 747 cm->cm_complete = aac_bio_complete; 748 if (BIO_IS_READ(bp)) { 749 br = (struct aac_blockread *)&fib->data[0]; 750 br->Command = VM_CtBlockRead; 751 br->ContainerId = ad->ad_container->co_mntobj.ObjectId; 752 br->BlockNumber = bp->bio_pblkno; 753 br->ByteCount = bp->bio_bcount; 754 fib->Header.Size += sizeof(struct aac_blockread); 755 cm->cm_sgtable = &br->SgMap; 756 cm->cm_flags |= AAC_CMD_DATAIN; 757 } else { 758 bw = (struct aac_blockwrite *)&fib->data[0]; 759 bw->Command = VM_CtBlockWrite; 760 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId; 761 bw->BlockNumber = bp->bio_pblkno; 762 bw->ByteCount = bp->bio_bcount; 763 bw->Stable = CUNSTABLE; /* XXX what's appropriate here? */ 764 fib->Header.Size += sizeof(struct aac_blockwrite); 765 cm->cm_flags |= AAC_CMD_DATAOUT; 766 cm->cm_sgtable = &bw->SgMap; 767 } 768 769 *cmp = cm; 770 return(0); 771 772 fail: 773 if (bp != NULL) 774 bioq_insert_tail(&sc->aac_bioq, bp); 775 if (cm != NULL) 776 aac_release_command(cm); 777 return(ENOMEM); 778 } 779 780 /******************************************************************************** 781 * Handle a bio-instigated command that has been completed. 782 */ 783 static void 784 aac_bio_complete(struct aac_command *cm) 785 { 786 struct aac_softc *sc = cm->cm_sc; 787 struct aac_blockread_response *brr; 788 struct aac_blockwrite_response *bwr; 789 struct bio *bp; 790 AAC_FSAStatus status; 791 792 /* kill the timeout timer */ 793 untimeout((timeout_t *)aac_timeout, cm, cm->timeout_handle); 794 795 /* fetch relevant status and then release the command */ 796 bp = (struct bio *)cm->cm_private; 797 if (BIO_IS_READ(bp)) { 798 brr = (struct aac_blockread_response *)&cm->cm_fib->data[0]; 799 status = brr->Status; 800 } else { 801 bwr = (struct aac_blockwrite_response *)&cm->cm_fib->data[0]; 802 status = bwr->Status; 803 } 804 aac_release_command(cm); 805 806 /* fix up the bio based on status */ 807 if (status == ST_OK) { 808 bp->bio_resid = 0; 809 } else { 810 bp->bio_error = EIO; 811 bp->bio_flags |= BIO_ERROR; 812 813 /* XXX be more verbose? */ 814 device_printf(sc->aac_dev, "I/O error %d (%s)\n", status, AAC_COMMAND_STATUS(status)); 815 } 816 aac_complete_bio(bp); /* XXX rename one of these functions! */ 817 } 818 819 /******************************************************************************** 820 * Submit a command to the controller, return when it completes. 821 */ 822 static int 823 aac_wait_command(struct aac_command *cm, int timeout) 824 { 825 int s, error = 0; 826 827 debug_called(2); 828 829 /* Put the command on the ready queue and get things going */ 830 aac_enqueue_ready(cm); 831 aac_startio(cm->cm_sc); 832 s = splbio(); 833 while(!(cm->cm_flags & AAC_CMD_COMPLETED) && (error != EWOULDBLOCK)) { 834 error = tsleep(cm, PRIBIO, "aacwait", timeout * hz); 835 } 836 splx(s); 837 return(error); 838 } 839 840 /******************************************************************************** 841 ******************************************************************************** 842 Command Buffer Management 843 ******************************************************************************** 844 ********************************************************************************/ 845 846 /******************************************************************************** 847 * Allocate a command. 848 */ 849 static int 850 aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp) 851 { 852 struct aac_command *cm; 853 854 debug_called(3); 855 856 cm = aac_dequeue_free(sc); 857 if (cm == NULL) { 858 aac_alloc_command_cluster(sc); 859 cm = aac_dequeue_free(sc); 860 } 861 if (cm == NULL) 862 return(ENOMEM); 863 864 /* initialise the command/FIB */ 865 cm->cm_sgtable = NULL; 866 cm->cm_flags = 0; 867 cm->cm_complete = NULL; 868 cm->cm_private = NULL; 869 cm->cm_fib->Header.XferState = AAC_FIBSTATE_EMPTY; 870 cm->cm_fib->Header.StructType = AAC_FIBTYPE_TFIB; 871 cm->cm_fib->Header.Flags = 0; 872 cm->cm_fib->Header.SenderSize = sizeof(struct aac_fib); 873 874 /* 875 * These are duplicated in aac_start to cover the case where an 876 * intermediate stage may have destroyed them. They're left 877 * initialised here for debugging purposes only. 878 */ 879 cm->cm_fib->Header.SenderFibAddress = (u_int32_t)cm->cm_fib; 880 cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys; 881 882 *cmp = cm; 883 return(0); 884 } 885 886 /******************************************************************************** 887 * Release a command back to the freelist. 888 */ 889 static void 890 aac_release_command(struct aac_command *cm) 891 { 892 debug_called(3); 893 894 aac_enqueue_free(cm); 895 } 896 897 /******************************************************************************** 898 * Map helper for command cluster allocation. Tell each of the FIBs what its 899 * address in the adapter's space is, fill in a few other fields. 900 */ 901 static void 902 aac_map_command_cluster(void *arg, bus_dma_segment_t *segs, int nseg, int error) 903 { 904 struct aac_command_cluster *cmc = (struct aac_command_cluster *)arg; 905 906 debug_called(3); 907 908 cmc->cmc_fibphys = segs[0].ds_addr; 909 } 910 911 /******************************************************************************** 912 * Allocate and initialise a cluster of commands. 913 */ 914 static void 915 aac_alloc_command_cluster(struct aac_softc *sc) 916 { 917 struct aac_command_cluster *cmc; 918 struct aac_command *cm; 919 int i; 920 921 debug_called(1); 922 923 cmc = malloc(sizeof(struct aac_command_cluster), M_DEVBUF, M_NOWAIT); 924 if (cmc != NULL) { 925 bzero(cmc, sizeof(*cmc)); 926 927 /* allocate the FIB cluster in DMAable memory and load it */ 928 if (bus_dmamem_alloc(sc->aac_fib_dmat, (void **)&cmc->cmc_fibs, BUS_DMA_NOWAIT, &cmc->cmc_fibmap)) { 929 free(cmc, M_DEVBUF); 930 return; 931 } 932 bus_dmamap_load(sc->aac_fib_dmat, cmc->cmc_fibmap, cmc->cmc_fibs, 933 AAC_CLUSTER_COUNT * sizeof(struct aac_fib), aac_map_command_cluster, cmc, 0); 934 935 aac_enqueue_cluster(sc, cmc); 936 for (i = 0; i < AAC_CLUSTER_COUNT; i++) { 937 cm = &cmc->cmc_command[i]; 938 cm->cm_sc = sc; 939 cm->cm_fib = cmc->cmc_fibs + i; 940 cm->cm_fibphys = cmc->cmc_fibphys + (i * sizeof(struct aac_fib)); 941 942 if (!bus_dmamap_create(sc->aac_buffer_dmat, 0, &cm->cm_datamap)) 943 aac_release_command(cm); 944 } 945 } else { 946 debug(2, "can't allocate memeory for command cluster"); 947 } 948 } 949 950 /******************************************************************************** 951 * Free a command cluster. 952 */ 953 static void 954 aac_free_command_cluster(struct aac_command_cluster *cmc) 955 { 956 struct aac_softc *sc = cmc->cmc_command[0].cm_sc; 957 int i; 958 959 debug_called(1); 960 961 for (i = 0; i < AAC_CLUSTER_COUNT; i++) 962 bus_dmamap_destroy(sc->aac_buffer_dmat, cmc->cmc_command[i].cm_datamap); 963 bus_dmamap_unload(sc->aac_fib_dmat, cmc->cmc_fibmap); 964 bus_dmamem_free(sc->aac_fib_dmat, cmc->cmc_fibs, cmc->cmc_fibmap); 965 966 free(cmc, M_DEVBUF); 967 } 968 969 /******************************************************************************** 970 * Command-mapping helper function - populate this command's s/g table. 971 */ 972 static void 973 aac_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 974 { 975 struct aac_command *cm = (struct aac_command *)arg; 976 struct aac_fib *fib = cm->cm_fib; 977 struct aac_sg_table *sg; 978 int i; 979 980 debug_called(3); 981 982 /* find the s/g table */ 983 sg = cm->cm_sgtable; 984 985 /* copy into the FIB */ 986 if (sg != NULL) { 987 sg->SgCount = nseg; 988 for (i = 0; i < nseg; i++) { 989 sg->SgEntry[i].SgAddress = segs[i].ds_addr; 990 sg->SgEntry[i].SgByteCount = segs[i].ds_len; 991 } 992 /* update the FIB size for the s/g count */ 993 fib->Header.Size += nseg * sizeof(struct aac_sg_entry); 994 } 995 996 } 997 998 /******************************************************************************** 999 * Map a command into controller-visible space. 1000 */ 1001 static void 1002 aac_map_command(struct aac_command *cm) 1003 { 1004 struct aac_softc *sc = cm->cm_sc; 1005 1006 debug_called(2); 1007 1008 /* don't map more than once */ 1009 if (cm->cm_flags & AAC_CMD_MAPPED) 1010 return; 1011 1012 if (cm->cm_datalen != 0) { 1013 bus_dmamap_load(sc->aac_buffer_dmat, cm->cm_datamap, cm->cm_data, 1014 cm->cm_datalen, aac_map_command_sg, cm, 0); 1015 1016 if (cm->cm_flags & AAC_CMD_DATAIN) 1017 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, BUS_DMASYNC_PREREAD); 1018 if (cm->cm_flags & AAC_CMD_DATAOUT) 1019 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, BUS_DMASYNC_PREWRITE); 1020 } 1021 cm->cm_flags |= AAC_CMD_MAPPED; 1022 } 1023 1024 /******************************************************************************** 1025 * Unmap a command from controller-visible space. 1026 */ 1027 static void 1028 aac_unmap_command(struct aac_command *cm) 1029 { 1030 struct aac_softc *sc = cm->cm_sc; 1031 1032 debug_called(2); 1033 1034 if (!(cm->cm_flags & AAC_CMD_MAPPED)) 1035 return; 1036 1037 if (cm->cm_datalen != 0) { 1038 if (cm->cm_flags & AAC_CMD_DATAIN) 1039 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, BUS_DMASYNC_POSTREAD); 1040 if (cm->cm_flags & AAC_CMD_DATAOUT) 1041 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap, BUS_DMASYNC_POSTWRITE); 1042 1043 bus_dmamap_unload(sc->aac_buffer_dmat, cm->cm_datamap); 1044 } 1045 cm->cm_flags &= ~AAC_CMD_MAPPED; 1046 } 1047 1048 /******************************************************************************** 1049 ******************************************************************************** 1050 Hardware Interface 1051 ******************************************************************************** 1052 ********************************************************************************/ 1053 1054 /******************************************************************************** 1055 * Initialise the adapter. 1056 */ 1057 static void 1058 aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1059 { 1060 struct aac_softc *sc = (struct aac_softc *)arg; 1061 1062 debug_called(1); 1063 1064 sc->aac_common_busaddr = segs[0].ds_addr; 1065 } 1066 1067 static int 1068 aac_init(struct aac_softc *sc) 1069 { 1070 struct aac_adapter_init *ip; 1071 time_t then; 1072 u_int32_t code; 1073 u_int8_t *qaddr; 1074 1075 debug_called(1); 1076 1077 /* 1078 * First wait for the adapter to come ready. 1079 */ 1080 then = time_second; 1081 do { 1082 code = AAC_GET_FWSTATUS(sc); 1083 if (code & AAC_SELF_TEST_FAILED) { 1084 device_printf(sc->aac_dev, "FATAL: selftest failed\n"); 1085 return(ENXIO); 1086 } 1087 if (code & AAC_KERNEL_PANIC) { 1088 device_printf(sc->aac_dev, "FATAL: controller kernel panic\n"); 1089 return(ENXIO); 1090 } 1091 if (time_second > (then + AAC_BOOT_TIMEOUT)) { 1092 device_printf(sc->aac_dev, "FATAL: controller not coming ready, status %x\n", code); 1093 return(ENXIO); 1094 } 1095 } while (!(code & AAC_UP_AND_RUNNING)); 1096 1097 /* 1098 * Create DMA tag for the common structure and allocate it. 1099 */ 1100 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */ 1101 1, 0, /* alignment, boundary */ 1102 BUS_SPACE_MAXADDR, /* lowaddr */ 1103 BUS_SPACE_MAXADDR, /* highaddr */ 1104 NULL, NULL, /* filter, filterarg */ 1105 sizeof(struct aac_common), 1,/* maxsize, nsegments */ 1106 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 1107 0, /* flags */ 1108 &sc->aac_common_dmat)) { 1109 device_printf(sc->aac_dev, "can't allocate common structure DMA tag\n"); 1110 return(ENOMEM); 1111 } 1112 if (bus_dmamem_alloc(sc->aac_common_dmat, (void **)&sc->aac_common, BUS_DMA_NOWAIT, &sc->aac_common_dmamap)) { 1113 device_printf(sc->aac_dev, "can't allocate common structure\n"); 1114 return(ENOMEM); 1115 } 1116 bus_dmamap_load(sc->aac_common_dmat, sc->aac_common_dmamap, sc->aac_common, sizeof(*sc->aac_common), 1117 aac_common_map, sc, 0); 1118 bzero(sc->aac_common, sizeof(*sc->aac_common)); 1119 1120 /* 1121 * Fill in the init structure. This tells the adapter about the physical location 1122 * of various important shared data structures. 1123 */ 1124 ip = &sc->aac_common->ac_init; 1125 ip->InitStructRevision = AAC_INIT_STRUCT_REVISION; 1126 1127 ip->AdapterFibsPhysicalAddress = sc->aac_common_busaddr + offsetof(struct aac_common, ac_fibs); 1128 ip->AdapterFibsVirtualAddress = &sc->aac_common->ac_fibs[0]; 1129 ip->AdapterFibsSize = AAC_ADAPTER_FIBS * sizeof(struct aac_fib); 1130 ip->AdapterFibAlign = sizeof(struct aac_fib); 1131 1132 ip->PrintfBufferAddress = sc->aac_common_busaddr + offsetof(struct aac_common, ac_printf); 1133 ip->PrintfBufferSize = AAC_PRINTF_BUFSIZE; 1134 1135 ip->HostPhysMemPages = 0; /* not used? */ 1136 ip->HostElapsedSeconds = time_second; /* reset later if invalid */ 1137 1138 /* 1139 * Initialise FIB queues. Note that it appears that the layout of the indexes 1140 * and the segmentation of the entries is mandated by the adapter, which is 1141 * only told about the base of the queue index fields. 1142 * 1143 * The initial values of the indices are assumed to inform the adapter 1144 * of the sizes of the respective queues. 1145 * 1146 * The Linux driver uses a much more complex scheme whereby several header 1147 * records are kept for each queue. We use a couple of generic list manipulation 1148 * functions which 'know' the size of each list by virtue of a table. 1149 */ 1150 qaddr = &sc->aac_common->ac_qbuf[0] + AAC_QUEUE_ALIGN; 1151 qaddr -= (u_int32_t)qaddr % AAC_QUEUE_ALIGN; 1152 sc->aac_queues = (struct aac_queue_table *)qaddr; 1153 ip->CommHeaderAddress = sc->aac_common_busaddr + ((u_int32_t)sc->aac_queues - (u_int32_t)sc->aac_common); 1154 bzero(sc->aac_queues, sizeof(struct aac_queue_table)); 1155 1156 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = AAC_HOST_NORM_CMD_ENTRIES; 1157 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = AAC_HOST_NORM_CMD_ENTRIES; 1158 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = AAC_HOST_HIGH_CMD_ENTRIES; 1159 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = AAC_HOST_HIGH_CMD_ENTRIES; 1160 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] = AAC_ADAP_NORM_CMD_ENTRIES; 1161 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] = AAC_ADAP_NORM_CMD_ENTRIES; 1162 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] = AAC_ADAP_HIGH_CMD_ENTRIES; 1163 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] = AAC_ADAP_HIGH_CMD_ENTRIES; 1164 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX] = AAC_HOST_NORM_RESP_ENTRIES; 1165 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX] = AAC_HOST_NORM_RESP_ENTRIES; 1166 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX] = AAC_HOST_HIGH_RESP_ENTRIES; 1167 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX] = AAC_HOST_HIGH_RESP_ENTRIES; 1168 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX] = AAC_ADAP_NORM_RESP_ENTRIES; 1169 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX] = AAC_ADAP_NORM_RESP_ENTRIES; 1170 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX] = AAC_ADAP_HIGH_RESP_ENTRIES; 1171 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX] = AAC_ADAP_HIGH_RESP_ENTRIES; 1172 sc->aac_qentries[AAC_HOST_NORM_CMD_QUEUE] = &sc->aac_queues->qt_HostNormCmdQueue[0]; 1173 sc->aac_qentries[AAC_HOST_HIGH_CMD_QUEUE] = &sc->aac_queues->qt_HostHighCmdQueue[0]; 1174 sc->aac_qentries[AAC_ADAP_NORM_CMD_QUEUE] = &sc->aac_queues->qt_AdapNormCmdQueue[0]; 1175 sc->aac_qentries[AAC_ADAP_HIGH_CMD_QUEUE] = &sc->aac_queues->qt_AdapHighCmdQueue[0]; 1176 sc->aac_qentries[AAC_HOST_NORM_RESP_QUEUE] = &sc->aac_queues->qt_HostNormRespQueue[0]; 1177 sc->aac_qentries[AAC_HOST_HIGH_RESP_QUEUE] = &sc->aac_queues->qt_HostHighRespQueue[0]; 1178 sc->aac_qentries[AAC_ADAP_NORM_RESP_QUEUE] = &sc->aac_queues->qt_AdapNormRespQueue[0]; 1179 sc->aac_qentries[AAC_ADAP_HIGH_RESP_QUEUE] = &sc->aac_queues->qt_AdapHighRespQueue[0]; 1180 1181 /* 1182 * Do controller-type-specific initialisation 1183 */ 1184 switch (sc->aac_hwif) { 1185 case AAC_HWIF_I960RX: 1186 AAC_SETREG4(sc, AAC_RX_ODBR, ~0); 1187 break; 1188 } 1189 1190 /* 1191 * Give the init structure to the controller. 1192 */ 1193 if (aac_sync_command(sc, AAC_MONKER_INITSTRUCT, 1194 sc->aac_common_busaddr + offsetof(struct aac_common, ac_init), 1195 0, 0, 0, NULL)) { 1196 device_printf(sc->aac_dev, "error establishing init structure\n"); 1197 return(EIO); 1198 } 1199 1200 return(0); 1201 } 1202 1203 /******************************************************************************** 1204 * Send a synchronous command to the controller and wait for a result. 1205 */ 1206 static int 1207 aac_sync_command(struct aac_softc *sc, u_int32_t command, 1208 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3, 1209 u_int32_t *sp) 1210 { 1211 time_t then; 1212 u_int32_t status; 1213 1214 debug_called(3); 1215 1216 /* populate the mailbox */ 1217 AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3); 1218 1219 /* ensure the sync command doorbell flag is cleared */ 1220 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1221 1222 /* then set it to signal the adapter */ 1223 AAC_QNOTIFY(sc, AAC_DB_SYNC_COMMAND); 1224 1225 /* spin waiting for the command to complete */ 1226 then = time_second; 1227 do { 1228 if (time_second > (then + AAC_IMMEDIATE_TIMEOUT)) { 1229 debug(2, "timed out"); 1230 return(EIO); 1231 } 1232 } while (!(AAC_GET_ISTATUS(sc) & AAC_DB_SYNC_COMMAND)); 1233 1234 /* clear the completion flag */ 1235 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND); 1236 1237 /* get the command status */ 1238 status = AAC_GET_MAILBOXSTATUS(sc); 1239 if (sp != NULL) 1240 *sp = status; 1241 return(0); /* check command return status? */ 1242 } 1243 1244 /******************************************************************************** 1245 * Send a synchronous FIB to the controller and wait for a result. 1246 */ 1247 static int 1248 aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate, 1249 void *data, u_int16_t datasize, 1250 void *result, u_int16_t *resultsize) 1251 { 1252 struct aac_fib *fib = &sc->aac_common->ac_sync_fib; 1253 1254 debug_called(3); 1255 1256 if (datasize > AAC_FIB_DATASIZE) 1257 return(EINVAL); 1258 1259 /* 1260 * Set up the sync FIB 1261 */ 1262 fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED | AAC_FIBSTATE_INITIALISED | AAC_FIBSTATE_EMPTY; 1263 fib->Header.XferState |= xferstate; 1264 fib->Header.Command = command; 1265 fib->Header.StructType = AAC_FIBTYPE_TFIB; 1266 fib->Header.Size = sizeof(struct aac_fib) + datasize; 1267 fib->Header.SenderSize = sizeof(struct aac_fib); 1268 fib->Header.SenderFibAddress = (u_int32_t)fib; 1269 fib->Header.ReceiverFibAddress = sc->aac_common_busaddr + offsetof(struct aac_common, ac_sync_fib); 1270 1271 /* 1272 * Copy in data. 1273 */ 1274 if (data != NULL) { 1275 bcopy(data, fib->data, datasize); 1276 fib->Header.XferState |= AAC_FIBSTATE_FROMHOST | AAC_FIBSTATE_NORM; 1277 } 1278 1279 /* 1280 * Give the FIB to the controller, wait for a response. 1281 */ 1282 if (aac_sync_command(sc, AAC_MONKER_SYNCFIB, fib->Header.ReceiverFibAddress, 1283 0, 0, 0, NULL)) { 1284 debug(2, "IO error"); 1285 return(EIO); 1286 } 1287 1288 /* 1289 * Copy out the result 1290 */ 1291 if (result != NULL) { 1292 *resultsize = fib->Header.Size - sizeof(struct aac_fib_header); 1293 bcopy(fib->data, result, *resultsize); 1294 } 1295 return(0); 1296 } 1297 1298 /******************************************************************************** 1299 * Adapter-space FIB queue manipulation 1300 * 1301 * Note that the queue implementation here is a little funky; neither the PI or 1302 * CI will ever be zero. This behaviour is a controller feature. 1303 */ 1304 static struct { 1305 int size; 1306 int notify; 1307 } aac_qinfo[] = { 1308 {AAC_HOST_NORM_CMD_ENTRIES, AAC_DB_COMMAND_NOT_FULL}, 1309 {AAC_HOST_HIGH_CMD_ENTRIES, 0}, 1310 {AAC_ADAP_NORM_CMD_ENTRIES, AAC_DB_COMMAND_READY}, 1311 {AAC_ADAP_HIGH_CMD_ENTRIES, 0}, 1312 {AAC_HOST_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_NOT_FULL}, 1313 {AAC_HOST_HIGH_RESP_ENTRIES, 0}, 1314 {AAC_ADAP_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_READY}, 1315 {AAC_ADAP_HIGH_RESP_ENTRIES, 0} 1316 }; 1317 1318 /* 1319 * Atomically insert an entry into the nominated queue, returns 0 on success or EBUSY 1320 * if the queue is full. 1321 * 1322 * XXX note that it would be more efficient to defer notifying the controller in 1323 * the case where we may be inserting several entries in rapid succession, but 1324 * implementing this usefully is difficult. 1325 */ 1326 static int 1327 aac_enqueue_fib(struct aac_softc *sc, int queue, u_int32_t fib_size, u_int32_t fib_addr) 1328 { 1329 u_int32_t pi, ci; 1330 int s, error; 1331 1332 debug_called(3); 1333 1334 s = splbio(); 1335 1336 /* get the producer/consumer indices */ 1337 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1338 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1339 1340 /* wrap the queue? */ 1341 if (pi >= aac_qinfo[queue].size) 1342 pi = 0; 1343 1344 /* check for queue full */ 1345 if ((pi + 1) == ci) { 1346 error = EBUSY; 1347 goto out; 1348 } 1349 1350 /* populate queue entry */ 1351 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size; 1352 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr; 1353 1354 /* update producer index */ 1355 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1; 1356 1357 /* notify the adapter if we know how */ 1358 if (aac_qinfo[queue].notify != 0) 1359 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1360 1361 error = 0; 1362 1363 out: 1364 splx(s); 1365 return(error); 1366 } 1367 1368 /* 1369 * Atomically remove one entry from the nominated queue, returns 0 on success or ENOENT 1370 * if the queue is empty. 1371 */ 1372 static int 1373 aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size, struct aac_fib **fib_addr) 1374 { 1375 u_int32_t pi, ci; 1376 int s, error; 1377 1378 debug_called(3); 1379 1380 s = splbio(); 1381 1382 /* get the producer/consumer indices */ 1383 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX]; 1384 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX]; 1385 1386 /* check for queue empty */ 1387 if (ci == pi) { 1388 error = ENOENT; 1389 goto out; 1390 } 1391 1392 /* wrap the queue? */ 1393 if (ci >= aac_qinfo[queue].size) 1394 ci = 0; 1395 1396 /* fetch the entry */ 1397 *fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size; 1398 *fib_addr = (struct aac_fib *)(sc->aac_qentries[queue] + ci)->aq_fib_addr; 1399 1400 /* update consumer index */ 1401 sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1; 1402 1403 /* if we have made the queue un-full, notify the adapter */ 1404 if (((pi + 1) == ci) && (aac_qinfo[queue].notify != 0)) 1405 AAC_QNOTIFY(sc, aac_qinfo[queue].notify); 1406 error = 0; 1407 1408 out: 1409 splx(s); 1410 return(error); 1411 } 1412 1413 /******************************************************************************** 1414 ******************************************************************************** 1415 Interface Function Vectors 1416 ******************************************************************************** 1417 ********************************************************************************/ 1418 1419 /******************************************************************************** 1420 * Read the current firmware status word. 1421 */ 1422 static int 1423 aac_sa_get_fwstatus(struct aac_softc *sc) 1424 { 1425 debug_called(3); 1426 1427 return(AAC_GETREG4(sc, AAC_SA_FWSTATUS)); 1428 } 1429 1430 static int 1431 aac_rx_get_fwstatus(struct aac_softc *sc) 1432 { 1433 debug_called(3); 1434 1435 return(AAC_GETREG4(sc, AAC_RX_FWSTATUS)); 1436 } 1437 1438 /******************************************************************************** 1439 * Notify the controller of a change in a given queue 1440 */ 1441 1442 static void 1443 aac_sa_qnotify(struct aac_softc *sc, int qbit) 1444 { 1445 debug_called(3); 1446 1447 AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit); 1448 } 1449 1450 static void 1451 aac_rx_qnotify(struct aac_softc *sc, int qbit) 1452 { 1453 debug_called(3); 1454 1455 AAC_SETREG4(sc, AAC_RX_IDBR, qbit); 1456 } 1457 1458 /******************************************************************************** 1459 * Get the interrupt reason bits 1460 */ 1461 static int 1462 aac_sa_get_istatus(struct aac_softc *sc) 1463 { 1464 debug_called(3); 1465 1466 return(AAC_GETREG2(sc, AAC_SA_DOORBELL0)); 1467 } 1468 1469 static int 1470 aac_rx_get_istatus(struct aac_softc *sc) 1471 { 1472 debug_called(3); 1473 1474 return(AAC_GETREG4(sc, AAC_RX_ODBR)); 1475 } 1476 1477 /******************************************************************************** 1478 * Clear some interrupt reason bits 1479 */ 1480 static void 1481 aac_sa_clear_istatus(struct aac_softc *sc, int mask) 1482 { 1483 debug_called(3); 1484 1485 AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask); 1486 } 1487 1488 static void 1489 aac_rx_clear_istatus(struct aac_softc *sc, int mask) 1490 { 1491 debug_called(3); 1492 1493 AAC_SETREG4(sc, AAC_RX_ODBR, mask); 1494 } 1495 1496 /******************************************************************************** 1497 * Populate the mailbox and set the command word 1498 */ 1499 static void 1500 aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command, 1501 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 1502 { 1503 debug_called(4); 1504 1505 AAC_SETREG4(sc, AAC_SA_MAILBOX, command); 1506 AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0); 1507 AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1); 1508 AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2); 1509 AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3); 1510 } 1511 1512 static void 1513 aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command, 1514 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3) 1515 { 1516 debug_called(4); 1517 1518 AAC_SETREG4(sc, AAC_RX_MAILBOX, command); 1519 AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0); 1520 AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1); 1521 AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2); 1522 AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3); 1523 } 1524 1525 /******************************************************************************** 1526 * Fetch the immediate command status word 1527 */ 1528 static int 1529 aac_sa_get_mailboxstatus(struct aac_softc *sc) 1530 { 1531 debug_called(4); 1532 1533 return(AAC_GETREG4(sc, AAC_SA_MAILBOX)); 1534 } 1535 1536 static int 1537 aac_rx_get_mailboxstatus(struct aac_softc *sc) 1538 { 1539 debug_called(4); 1540 1541 return(AAC_GETREG4(sc, AAC_RX_MAILBOX)); 1542 } 1543 1544 /******************************************************************************** 1545 * Set/clear interrupt masks 1546 */ 1547 static void 1548 aac_sa_set_interrupts(struct aac_softc *sc, int enable) 1549 { 1550 debug(2, "%sable interrupts", enable ? "en" : "dis"); 1551 1552 if (enable) { 1553 AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS); 1554 } else { 1555 AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0); 1556 } 1557 } 1558 1559 static void 1560 aac_rx_set_interrupts(struct aac_softc *sc, int enable) 1561 { 1562 debug(2, "%sable interrupts", enable ? "en" : "dis"); 1563 1564 if (enable) { 1565 AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS); 1566 } else { 1567 AAC_SETREG4(sc, AAC_RX_OIMR, ~0); 1568 } 1569 } 1570 1571 /******************************************************************************** 1572 ******************************************************************************** 1573 Debugging and Diagnostics 1574 ******************************************************************************** 1575 ********************************************************************************/ 1576 1577 /******************************************************************************** 1578 * Print some information about the controller. 1579 */ 1580 static void 1581 aac_describe_controller(struct aac_softc *sc) 1582 { 1583 u_int8_t buf[AAC_FIB_DATASIZE]; /* XXX really a bit big for the stack */ 1584 u_int16_t bufsize; 1585 struct aac_adapter_info *info; 1586 u_int8_t arg; 1587 1588 debug_called(2); 1589 1590 arg = 0; 1591 if (aac_sync_fib(sc, RequestAdapterInfo, 0, &arg, sizeof(arg), &buf, &bufsize)) { 1592 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n"); 1593 return; 1594 } 1595 if (bufsize != sizeof(*info)) { 1596 device_printf(sc->aac_dev, "RequestAdapterInfo returned wrong data size (%d != %d)\n", 1597 bufsize, sizeof(*info)); 1598 return; 1599 } 1600 info = (struct aac_adapter_info *)&buf[0]; 1601 1602 device_printf(sc->aac_dev, "%s %dMHz, %dMB total memory, %s (%d)\n", 1603 aac_describe_code(aac_cpu_variant, info->CpuVariant), info->ClockSpeed, 1604 info->TotalMem / (1024 * 1024), 1605 aac_describe_code(aac_battery_platform, info->batteryPlatform), info->batteryPlatform); 1606 1607 /* save the kernel revision structure for later use */ 1608 sc->aac_revision = info->KernelRevision; 1609 device_printf(sc->aac_dev, "Kernel %d.%d-%d, S/N %llx\n", 1610 info->KernelRevision.external.comp.major, 1611 info->KernelRevision.external.comp.minor, 1612 info->KernelRevision.external.comp.dash, 1613 info->SerialNumber); /* XXX how is this meant to be formatted? */ 1614 } 1615 1616 /******************************************************************************** 1617 * Look up a text description of a numeric error code and return a pointer to 1618 * same. 1619 */ 1620 static char * 1621 aac_describe_code(struct aac_code_lookup *table, u_int32_t code) 1622 { 1623 int i; 1624 1625 for (i = 0; table[i].string != NULL; i++) 1626 if (table[i].code == code) 1627 return(table[i].string); 1628 return(table[i+1].string); 1629 } 1630 1631 /***************************************************************************** 1632 ***************************************************************************** 1633 Management Interface 1634 ***************************************************************************** 1635 *****************************************************************************/ 1636 1637 static int 1638 aac_open(dev_t dev, int flags, int fmt, struct proc *p) 1639 { 1640 struct aac_softc *sc = dev->si_drv1; 1641 1642 debug_called(2); 1643 1644 /* Check to make sure the device isn't already open */ 1645 if (sc->aac_state & AAC_STATE_OPEN) { 1646 return EBUSY; 1647 } 1648 sc->aac_state |= AAC_STATE_OPEN; 1649 1650 return 0; 1651 } 1652 1653 static int 1654 aac_close(dev_t dev, int flags, int fmt, struct proc *p) 1655 { 1656 struct aac_softc *sc = dev->si_drv1; 1657 1658 debug_called(2); 1659 1660 /* Mark this unit as no longer open */ 1661 sc->aac_state &= ~AAC_STATE_OPEN; 1662 1663 return 0; 1664 } 1665 1666 static int 1667 aac_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p) 1668 { 1669 struct aac_softc *sc = dev->si_drv1; 1670 int error = 0, i; 1671 1672 debug_called(2); 1673 1674 switch (cmd) { 1675 #ifdef AAC_COMPAT_LINUX 1676 case FSACTL_SENDFIB: 1677 debug(0, "FSACTL_SENDFIB"); 1678 error = aac_ioctl_sendfib(sc, arg); 1679 break; 1680 case FSACTL_AIF_THREAD: 1681 debug(0, "FSACTL_AIF_THREAD"); 1682 error = EINVAL; 1683 break; 1684 case FSACTL_OPEN_GET_ADAPTER_FIB: 1685 debug(0, "FSACTL_OPEN_GET_ADAPTER_FIB"); 1686 /* 1687 * Pass the caller out an AdapterFibContext. 1688 * 1689 * Note that because we only support one opener, we 1690 * basically ignore this. Set the caller's context to a magic 1691 * number just in case. 1692 */ 1693 i = AAC_AIF_SILLYMAGIC; 1694 error = copyout(&i, arg, sizeof(i)); 1695 break; 1696 case FSACTL_GET_NEXT_ADAPTER_FIB: 1697 debug(0, "FSACTL_GET_NEXT_ADAPTER_FIB"); 1698 error = aac_linux_getnext_aif(sc, arg); 1699 break; 1700 case FSACTL_CLOSE_GET_ADAPTER_FIB: 1701 debug(0, "FSACTL_CLOSE_GET_ADAPTER_FIB"); 1702 /* don't do anything here */ 1703 break; 1704 case FSACTL_MINIPORT_REV_CHECK: 1705 debug(0, "FSACTL_MINIPORT_REV_CHECK"); 1706 error = aac_linux_rev_check(sc, arg); 1707 break; 1708 #endif 1709 default: 1710 device_printf(sc->aac_dev, "unsupported cmd 0x%lx\n", cmd); 1711 error = EINVAL; 1712 break; 1713 } 1714 return(error); 1715 } 1716 1717 /******************************************************************************** 1718 * Send a FIB supplied from userspace 1719 */ 1720 static int 1721 aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib) 1722 { 1723 struct aac_command *cm; 1724 int size, error; 1725 1726 debug_called(2); 1727 1728 cm = NULL; 1729 1730 /* 1731 * Get a command 1732 */ 1733 if (aac_alloc_command(sc, &cm)) { 1734 error = EBUSY; 1735 goto out; 1736 } 1737 1738 /* 1739 * Fetch the FIB header, then re-copy to get data as well. 1740 */ 1741 if ((error = copyin(ufib, cm->cm_fib, sizeof(struct aac_fib_header))) != 0) 1742 goto out; 1743 size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header); 1744 if (size > sizeof(struct aac_fib)) { 1745 device_printf(sc->aac_dev, "incoming FIB oversized (%d > %d)\n", size, sizeof(struct aac_fib)); 1746 size = sizeof(struct aac_fib); 1747 } 1748 if ((error = copyin(ufib, cm->cm_fib, size)) != 0) 1749 goto out; 1750 cm->cm_fib->Header.Size = size; 1751 1752 /* 1753 * Pass the FIB to the controller, wait for it to complete. 1754 */ 1755 if ((error = aac_wait_command(cm, 30)) != 0) /* XXX user timeout? */ 1756 goto out; 1757 1758 /* 1759 * Copy the FIB and data back out to the caller. 1760 */ 1761 size = cm->cm_fib->Header.Size; 1762 if (size > sizeof(struct aac_fib)) { 1763 device_printf(sc->aac_dev, "outbound FIB oversized (%d > %d)\n", size, sizeof(struct aac_fib)); 1764 size = sizeof(struct aac_fib); 1765 } 1766 error = copyout(cm->cm_fib, ufib, size); 1767 1768 out: 1769 if (cm != NULL) 1770 aac_release_command(cm); 1771 return(error); 1772 } 1773 1774 /******************************************************************************** 1775 * Handle an AIF sent to us by the controller; queue it for later reference. 1776 * 1777 * XXX what's the right thing to do here when the queue is full? Drop the older 1778 * or newer entries? 1779 */ 1780 static void 1781 aac_handle_aif(struct aac_softc *sc, struct aac_aif_command *aif) 1782 { 1783 int next, s; 1784 1785 debug_called(2); 1786 1787 s = splbio(); 1788 next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH; 1789 if (next != sc->aac_aifq_tail) { 1790 bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command)); 1791 sc->aac_aifq_head = next; 1792 if (sc->aac_state & AAC_STATE_AIF_SLEEPER) 1793 wakeup(sc->aac_aifq); 1794 } 1795 splx(s); 1796 aac_print_aif(sc, aif); 1797 } 1798 1799 /******************************************************************************** 1800 * Hand the next AIF off the top of the queue out to userspace. 1801 */ 1802 static int 1803 aac_return_aif(struct aac_softc *sc, caddr_t uptr) 1804 { 1805 int error, s; 1806 1807 debug_called(2); 1808 1809 s = splbio(); 1810 if (sc->aac_aifq_tail == sc->aac_aifq_head) { 1811 error = EAGAIN; 1812 } else { 1813 error = copyout(&sc->aac_aifq[sc->aac_aifq_tail], uptr, sizeof(struct aac_aif_command)); 1814 if (!error) 1815 sc->aac_aifq_tail = (sc->aac_aifq_tail + 1) % AAC_AIFQ_LENGTH; 1816 } 1817 splx(s); 1818 return(error); 1819 } 1820 1821 /******************************************************************************** 1822 ******************************************************************************** 1823 Linux Management Interface 1824 ******************************************************************************** 1825 ********************************************************************************/ 1826 1827 #ifdef AAC_COMPAT_LINUX 1828 1829 #include <sys/proc.h> 1830 #include <machine/../linux/linux.h> 1831 #include <machine/../linux/linux_proto.h> 1832 #include <compat/linux/linux_ioctl.h> 1833 1834 #define AAC_LINUX_IOCTL_MIN 0x2000 1835 #define AAC_LINUX_IOCTL_MAX 0x21ff 1836 1837 static linux_ioctl_function_t aac_linux_ioctl; 1838 static struct linux_ioctl_handler aac_handler = {aac_linux_ioctl, AAC_LINUX_IOCTL_MIN, AAC_LINUX_IOCTL_MAX}; 1839 1840 SYSINIT (aac_register, SI_SUB_KLD, SI_ORDER_MIDDLE, linux_ioctl_register_handler, &aac_handler); 1841 SYSUNINIT(aac_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, linux_ioctl_unregister_handler, &aac_handler); 1842 1843 MODULE_DEPEND(aac, linux, 1, 1, 1); 1844 1845 static int 1846 aac_linux_ioctl(struct proc *p, struct linux_ioctl_args *args) 1847 { 1848 struct file *fp = p->p_fd->fd_ofiles[args->fd]; 1849 u_long cmd = args->cmd; 1850 1851 /* 1852 * Pass the ioctl off to our standard handler. 1853 */ 1854 return(fo_ioctl(fp, cmd, (caddr_t)args->arg, p)); 1855 } 1856 1857 /******************************************************************************** 1858 * Return the Revision of the driver to the userspace and check to see if the 1859 * userspace app is possibly compatible. This is extremely bogus right now 1860 * because I have no idea how to handle the versioning of this driver. It is 1861 * needed, though, to get aaccli working. 1862 */ 1863 static int 1864 aac_linux_rev_check(struct aac_softc *sc, caddr_t udata) 1865 { 1866 struct aac_rev_check rev_check; 1867 struct aac_rev_check_resp rev_check_resp; 1868 int error = 0; 1869 1870 debug_called(2); 1871 1872 /* 1873 * Copyin the revision struct from userspace 1874 */ 1875 if ((error = copyin(udata, (caddr_t)&rev_check, sizeof(struct aac_rev_check))) != 0) { 1876 return error; 1877 } 1878 1879 debug(2, "Userland revision= %d\n", rev_check.callingRevision.buildNumber); 1880 1881 /* 1882 * Doctor up the response struct. 1883 */ 1884 rev_check_resp.possiblyCompatible = 1; 1885 rev_check_resp.adapterSWRevision.external.ul = sc->aac_revision.external.ul; 1886 rev_check_resp.adapterSWRevision.buildNumber = sc->aac_revision.buildNumber; 1887 1888 return(copyout((caddr_t)&rev_check_resp, udata, sizeof(struct aac_rev_check_resp))); 1889 } 1890 1891 /******************************************************************************** 1892 * Pass the caller the next AIF in their queue 1893 */ 1894 static int 1895 aac_linux_getnext_aif(struct aac_softc *sc, caddr_t arg) 1896 { 1897 struct get_adapter_fib_ioctl agf; 1898 int error, s; 1899 1900 debug_called(2); 1901 1902 if ((error = copyin(arg, &agf, sizeof(agf))) == 0) { 1903 1904 /* 1905 * Check the magic number that we gave the caller. 1906 */ 1907 if (agf.AdapterFibContext != AAC_AIF_SILLYMAGIC) { 1908 error = EFAULT; 1909 } else { 1910 1911 s = splbio(); 1912 error = aac_return_aif(sc, agf.AifFib); 1913 1914 if ((error == EAGAIN) && (agf.Wait)) { 1915 sc->aac_state |= AAC_STATE_AIF_SLEEPER; 1916 while (error == EAGAIN) { 1917 error = tsleep(sc->aac_aifq, PRIBIO | PCATCH, "aacaif", 0); 1918 if (error == 0) 1919 error = aac_return_aif(sc, agf.AifFib); 1920 } 1921 sc->aac_state &= ~AAC_STATE_AIF_SLEEPER; 1922 } 1923 splx(s); 1924 } 1925 } 1926 return(error); 1927 } 1928 1929 #endif /* AAC_COMPAT_LINUX */ 1930