amr.c revision 104094
12883Salundblad/*- 21444Sjfranck * Copyright (c) 1999,2000 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: head/sys/dev/amr/amr.c 104094 2002-09-28 17:15:38Z phk $ 28 */ 29 30/* 31 * Driver for the AMI MegaRaid family of controllers. 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/amr/amr_compat.h> 40#include <sys/bus.h> 41#include <sys/conf.h> 42#include <sys/devicestat.h> 43#include <sys/disk.h> 44#include <sys/stat.h> 45 46#include <machine/bus_memio.h> 47#include <machine/bus_pio.h> 48#include <machine/bus.h> 49#include <machine/resource.h> 50#include <sys/rman.h> 51 52#include <pci/pcireg.h> 53#include <pci/pcivar.h> 54 55#include <dev/amr/amrio.h> 56#include <dev/amr/amrreg.h> 57#include <dev/amr/amrvar.h> 58#define AMR_DEFINE_TABLES 59#include <dev/amr/amr_tables.h> 60 61#define AMR_CDEV_MAJOR 132 62 63static d_open_t amr_open; 64static d_close_t amr_close; 65static d_ioctl_t amr_ioctl; 66 67static struct cdevsw amr_cdevsw = { 68 /* open */ amr_open, 69 /* close */ amr_close, 70 /* read */ noread, 71 /* write */ nowrite, 72 /* ioctl */ amr_ioctl, 73 /* poll */ nopoll, 74 /* mmap */ nommap, 75 /* strategy */ nostrategy, 76 /* name */ "amr", 77 /* maj */ AMR_CDEV_MAJOR, 78 /* dump */ nodump, 79 /* psize */ nopsize, 80 /* flags */ 0, 81}; 82 83/* 84 * Initialisation, bus interface. 85 */ 86static void amr_startup(void *arg); 87 88/* 89 * Command wrappers 90 */ 91static int amr_query_controller(struct amr_softc *sc); 92static void *amr_enquiry(struct amr_softc *sc, size_t bufsize, 93 u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual); 94static void amr_completeio(struct amr_command *ac); 95 96/* 97 * Command buffer allocation. 98 */ 99static void amr_alloccmd_cluster(struct amr_softc *sc); 100static void amr_freecmd_cluster(struct amr_command_cluster *acc); 101 102/* 103 * Command processing. 104 */ 105static int amr_bio_command(struct amr_softc *sc, struct amr_command **acp); 106static int amr_wait_command(struct amr_command *ac); 107static int amr_poll_command(struct amr_command *ac); 108static int amr_getslot(struct amr_command *ac); 109static void amr_mapcmd(struct amr_command *ac); 110static void amr_unmapcmd(struct amr_command *ac); 111static int amr_start(struct amr_command *ac); 112static void amr_complete(void *context, int pending); 113 114/* 115 * Status monitoring 116 */ 117static void amr_periodic(void *data); 118 119/* 120 * Interface-specific shims 121 */ 122static int amr_quartz_submit_command(struct amr_softc *sc); 123static int amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 124 125static int amr_std_submit_command(struct amr_softc *sc); 126static int amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 127static void amr_std_attach_mailbox(struct amr_softc *sc); 128 129#ifdef AMR_BOARD_INIT 130static int amr_quartz_init(struct amr_softc *sc); 131static int amr_std_init(struct amr_softc *sc); 132#endif 133 134/* 135 * Debugging 136 */ 137static void amr_describe_controller(struct amr_softc *sc); 138#ifdef AMR_DEBUG 139static void amr_printcommand(struct amr_command *ac); 140#endif 141 142/******************************************************************************** 143 ******************************************************************************** 144 Inline Glue 145 ******************************************************************************** 146 ********************************************************************************/ 147 148/******************************************************************************** 149 ******************************************************************************** 150 Public Interfaces 151 ******************************************************************************** 152 ********************************************************************************/ 153 154/******************************************************************************** 155 * Initialise the controller and softc. 156 */ 157int 158amr_attach(struct amr_softc *sc) 159{ 160 161 debug_called(1); 162 163 /* 164 * Initialise per-controller queues. 165 */ 166 TAILQ_INIT(&sc->amr_completed); 167 TAILQ_INIT(&sc->amr_freecmds); 168 TAILQ_INIT(&sc->amr_cmd_clusters); 169 TAILQ_INIT(&sc->amr_ready); 170 bioq_init(&sc->amr_bioq); 171 172#if __FreeBSD_version >= 500005 173 /* 174 * Initialise command-completion task. 175 */ 176 TASK_INIT(&sc->amr_task_complete, 0, amr_complete, sc); 177#endif 178 179 debug(2, "queue init done"); 180 181 /* 182 * Configure for this controller type. 183 */ 184 if (AMR_IS_QUARTZ(sc)) { 185 sc->amr_submit_command = amr_quartz_submit_command; 186 sc->amr_get_work = amr_quartz_get_work; 187 } else { 188 sc->amr_submit_command = amr_std_submit_command; 189 sc->amr_get_work = amr_std_get_work; 190 amr_std_attach_mailbox(sc);; 191 } 192 193#ifdef AMR_BOARD_INIT 194 if ((AMR_IS_QUARTZ(sc) ? amr_quartz_init(sc) : amr_std_init(sc)))) 195 return(ENXIO); 196#endif 197 198 /* 199 * Quiz controller for features and limits. 200 */ 201 if (amr_query_controller(sc)) 202 return(ENXIO); 203 204 debug(2, "controller query complete"); 205 206#ifdef AMR_SCSI_PASSTHROUGH 207 /* 208 * Attach our 'real' SCSI channels to CAM. 209 */ 210 if (amr_cam_attach(sc)) 211 return(ENXIO); 212 debug(2, "CAM attach done"); 213#endif 214 215 /* 216 * Create the control device. 217 */ 218 sc->amr_dev_t = make_dev(&amr_cdevsw, device_get_unit(sc->amr_dev), UID_ROOT, GID_OPERATOR, 219 S_IRUSR | S_IWUSR, "amr%d", device_get_unit(sc->amr_dev)); 220 sc->amr_dev_t->si_drv1 = sc; 221 222 /* 223 * Schedule ourselves to bring the controller up once interrupts are 224 * available. 225 */ 226 bzero(&sc->amr_ich, sizeof(struct intr_config_hook)); 227 sc->amr_ich.ich_func = amr_startup; 228 sc->amr_ich.ich_arg = sc; 229 if (config_intrhook_establish(&sc->amr_ich) != 0) { 230 device_printf(sc->amr_dev, "can't establish configuration hook\n"); 231 return(ENOMEM); 232 } 233 234 /* 235 * Print a little information about the controller. 236 */ 237 amr_describe_controller(sc); 238 239 debug(2, "attach complete"); 240 return(0); 241} 242 243/******************************************************************************** 244 * Locate disk resources and attach children to them. 245 */ 246static void 247amr_startup(void *arg) 248{ 249 struct amr_softc *sc = (struct amr_softc *)arg; 250 struct amr_logdrive *dr; 251 int i, error; 252 253 debug_called(1); 254 255 /* pull ourselves off the intrhook chain */ 256 config_intrhook_disestablish(&sc->amr_ich); 257 258 /* get up-to-date drive information */ 259 if (amr_query_controller(sc)) { 260 device_printf(sc->amr_dev, "can't scan controller for drives\n"); 261 return; 262 } 263 264 /* iterate over available drives */ 265 for (i = 0, dr = &sc->amr_drive[0]; (i < AMR_MAXLD) && (dr->al_size != 0xffffffff); i++, dr++) { 266 /* are we already attached to this drive? */ 267 if (dr->al_disk == 0) { 268 /* generate geometry information */ 269 if (dr->al_size > 0x200000) { /* extended translation? */ 270 dr->al_heads = 255; 271 dr->al_sectors = 63; 272 } else { 273 dr->al_heads = 64; 274 dr->al_sectors = 32; 275 } 276 dr->al_cylinders = dr->al_size / (dr->al_heads * dr->al_sectors); 277 278 dr->al_disk = device_add_child(sc->amr_dev, NULL, -1); 279 if (dr->al_disk == 0) 280 device_printf(sc->amr_dev, "device_add_child failed\n"); 281 device_set_ivars(dr->al_disk, dr); 282 } 283 } 284 285 if ((error = bus_generic_attach(sc->amr_dev)) != 0) 286 device_printf(sc->amr_dev, "bus_generic_attach returned %d\n", error); 287 288 /* mark controller back up */ 289 sc->amr_state &= ~AMR_STATE_SHUTDOWN; 290 291 /* interrupts will be enabled before we do anything more */ 292 sc->amr_state |= AMR_STATE_INTEN; 293 294 /* 295 * Start the timeout routine. 296 */ 297/* sc->amr_timeout = timeout(amr_periodic, sc, hz);*/ 298 299 return; 300} 301 302/******************************************************************************* 303 * Free resources associated with a controller instance 304 */ 305void 306amr_free(struct amr_softc *sc) 307{ 308 struct amr_command_cluster *acc; 309 310#ifdef AMR_SCSI_PASSTHROUGH 311 /* detach from CAM */ 312 amr_cam_detach(sc); 313#endif 314 315 /* cancel status timeout */ 316 untimeout(amr_periodic, sc, sc->amr_timeout); 317 318 /* throw away any command buffers */ 319 while ((acc = TAILQ_FIRST(&sc->amr_cmd_clusters)) != NULL) { 320 TAILQ_REMOVE(&sc->amr_cmd_clusters, acc, acc_link); 321 amr_freecmd_cluster(acc); 322 } 323} 324 325/******************************************************************************* 326 * Receive a bio structure from a child device and queue it on a particular 327 * disk resource, then poke the disk resource to start as much work as it can. 328 */ 329int 330amr_submit_bio(struct amr_softc *sc, struct bio *bio) 331{ 332 debug_called(2); 333 334 amr_enqueue_bio(sc, bio); 335 amr_startio(sc); 336 return(0); 337} 338 339/******************************************************************************** 340 * Accept an open operation on the control device. 341 */ 342static int 343amr_open(dev_t dev, int flags, int fmt, struct thread *td) 344{ 345 int unit = minor(dev); 346 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 347 348 debug_called(1); 349 350 sc->amr_state |= AMR_STATE_OPEN; 351 return(0); 352} 353 354/******************************************************************************** 355 * Accept the last close on the control device. 356 */ 357static int 358amr_close(dev_t dev, int flags, int fmt, struct thread *td) 359{ 360 int unit = minor(dev); 361 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 362 363 debug_called(1); 364 365 sc->amr_state &= ~AMR_STATE_OPEN; 366 return (0); 367} 368 369/******************************************************************************** 370 * Handle controller-specific control operations. 371 */ 372static int 373amr_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct thread *td) 374{ 375 struct amr_softc *sc = (struct amr_softc *)dev->si_drv1; 376 int *arg = (int *)addr; 377 struct amr_user_ioctl *au = (struct amr_user_ioctl *)addr; 378 struct amr_command *ac; 379 struct amr_mailbox_ioctl *mbi; 380 struct amr_passthrough *ap; 381 void *dp; 382 int error; 383 384 debug_called(1); 385 386 error = 0; 387 dp = NULL; 388 ap = NULL; 389 ac = NULL; 390 switch(cmd) { 391 392 case AMR_IO_VERSION: 393 debug(1, "AMR_IO_VERSION"); 394 *arg = AMR_IO_VERSION_NUMBER; 395 break; 396 397 case AMR_IO_COMMAND: 398 debug(1, "AMR_IO_COMMAND 0x%x", au->au_cmd[0]); 399 /* handle inbound data buffer */ 400 if (au->au_length != 0) { 401 if ((dp = malloc(au->au_length, M_DEVBUF, M_WAITOK)) == NULL) { 402 error = ENOMEM; 403 break; 404 } 405 if ((error = copyin(au->au_buffer, dp, au->au_length)) != 0) 406 break; 407 debug(2, "copyin %ld bytes from %p -> %p", au->au_length, au->au_buffer, dp); 408 } 409 410 if ((ac = amr_alloccmd(sc)) == NULL) { 411 error = ENOMEM; 412 break; 413 } 414 415 /* handle SCSI passthrough command */ 416 if (au->au_cmd[0] == AMR_CMD_PASS) { 417 if ((ap = malloc(sizeof(*ap), M_DEVBUF, M_WAITOK | M_ZERO)) == NULL) { 418 error = ENOMEM; 419 break; 420 } 421 422 /* copy cdb */ 423 ap->ap_cdb_length = au->au_cmd[2]; 424 bcopy(&au->au_cmd[3], &ap->ap_cdb[0], ap->ap_cdb_length); 425 426 /* build passthrough */ 427 ap->ap_timeout = au->au_cmd[ap->ap_cdb_length + 3] & 0x07; 428 ap->ap_ars = (au->au_cmd[ap->ap_cdb_length + 3] & 0x08) ? 1 : 0; 429 ap->ap_islogical = (au->au_cmd[ap->ap_cdb_length + 3] & 0x80) ? 1 : 0; 430 ap->ap_logical_drive_no = au->au_cmd[ap->ap_cdb_length + 4]; 431 ap->ap_channel = au->au_cmd[ap->ap_cdb_length + 5]; 432 ap->ap_scsi_id = au->au_cmd[ap->ap_cdb_length + 6]; 433 ap->ap_request_sense_length = 14; 434 /* XXX what about the request-sense area? does the caller want it? */ 435 436 /* build command */ 437 ac->ac_data = ap; 438 ac->ac_length = sizeof(*ap); 439 ac->ac_flags |= AMR_CMD_DATAOUT; 440 ac->ac_ccb_data = dp; 441 ac->ac_ccb_length = au->au_length; 442 if (au->au_direction & AMR_IO_READ) 443 ac->ac_flags |= AMR_CMD_CCB_DATAIN; 444 if (au->au_direction & AMR_IO_WRITE) 445 ac->ac_flags |= AMR_CMD_CCB_DATAOUT; 446 447 ac->ac_mailbox.mb_command = AMR_CMD_PASS; 448 449 } else { 450 /* direct command to controller */ 451 mbi = (struct amr_mailbox_ioctl *)&ac->ac_mailbox; 452 453 /* copy pertinent mailbox items */ 454 mbi->mb_command = au->au_cmd[0]; 455 mbi->mb_channel = au->au_cmd[1]; 456 mbi->mb_param = au->au_cmd[2]; 457 mbi->mb_pad[0] = au->au_cmd[3]; 458 mbi->mb_drive = au->au_cmd[4]; 459 460 /* build the command */ 461 ac->ac_data = dp; 462 ac->ac_length = au->au_length; 463 if (au->au_direction & AMR_IO_READ) 464 ac->ac_flags |= AMR_CMD_DATAIN; 465 if (au->au_direction & AMR_IO_WRITE) 466 ac->ac_flags |= AMR_CMD_DATAOUT; 467 } 468 469 /* run the command */ 470 if ((error = amr_wait_command(ac)) != 0) 471 break; 472 473 /* copy out data and set status */ 474 if (au->au_length != 0) 475 error = copyout(dp, au->au_buffer, au->au_length); 476 debug(2, "copyout %ld bytes from %p -> %p", au->au_length, dp, au->au_buffer); 477 if (dp != NULL) 478 debug(2, "%16D", dp, " "); 479 au->au_status = ac->ac_status; 480 break; 481 482 default: 483 debug(1, "unknown ioctl 0x%lx", cmd); 484 error = ENOIOCTL; 485 break; 486 } 487 488 if (dp != NULL) 489 free(dp, M_DEVBUF); 490 if (ap != NULL) 491 free(ap, M_DEVBUF); 492 if (ac != NULL) 493 amr_releasecmd(ac); 494 return(error); 495} 496 497/******************************************************************************** 498 ******************************************************************************** 499 Status Monitoring 500 ******************************************************************************** 501 ********************************************************************************/ 502 503/******************************************************************************** 504 * Perform a periodic check of the controller status 505 */ 506static void 507amr_periodic(void *data) 508{ 509 struct amr_softc *sc = (struct amr_softc *)data; 510 511 debug_called(2); 512 513 /* XXX perform periodic status checks here */ 514 515 /* compensate for missed interrupts */ 516 amr_done(sc); 517 518 /* reschedule */ 519 sc->amr_timeout = timeout(amr_periodic, sc, hz); 520} 521 522/******************************************************************************** 523 ******************************************************************************** 524 Command Wrappers 525 ******************************************************************************** 526 ********************************************************************************/ 527 528/******************************************************************************** 529 * Interrogate the controller for the operational parameters we require. 530 */ 531static int 532amr_query_controller(struct amr_softc *sc) 533{ 534 struct amr_enquiry3 *aex; 535 struct amr_prodinfo *ap; 536 struct amr_enquiry *ae; 537 int ldrv; 538 539 /* 540 * If we haven't found the real limit yet, let us have a couple of commands in 541 * order to be able to probe. 542 */ 543 if (sc->amr_maxio == 0) 544 sc->amr_maxio = 2; 545 546 /* 547 * Try to issue an ENQUIRY3 command 548 */ 549 if ((aex = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_ENQ3, 550 AMR_CONFIG_ENQ3_SOLICITED_FULL)) != NULL) { 551 552 /* 553 * Fetch current state of logical drives. 554 */ 555 for (ldrv = 0; ldrv < aex->ae_numldrives; ldrv++) { 556 sc->amr_drive[ldrv].al_size = aex->ae_drivesize[ldrv]; 557 sc->amr_drive[ldrv].al_state = aex->ae_drivestate[ldrv]; 558 sc->amr_drive[ldrv].al_properties = aex->ae_driveprop[ldrv]; 559 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 560 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 561 } 562 free(aex, M_DEVBUF); 563 564 /* 565 * Get product info for channel count. 566 */ 567 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) == NULL) { 568 device_printf(sc->amr_dev, "can't obtain product data from controller\n"); 569 return(1); 570 } 571 sc->amr_maxdrives = 40; 572 sc->amr_maxchan = ap->ap_nschan; 573 sc->amr_maxio = ap->ap_maxio; 574 sc->amr_type |= AMR_TYPE_40LD; 575 free(ap, M_DEVBUF); 576 577 } else { 578 579 /* failed, try the 8LD ENQUIRY commands */ 580 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) == NULL) { 581 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) == NULL) { 582 device_printf(sc->amr_dev, "can't obtain configuration data from controller\n"); 583 return(1); 584 } 585 ae->ae_signature = 0; 586 } 587 588 /* 589 * Fetch current state of logical drives. 590 */ 591 for (ldrv = 0; ldrv < ae->ae_ldrv.al_numdrives; ldrv++) { 592 sc->amr_drive[ldrv].al_size = ae->ae_ldrv.al_size[ldrv]; 593 sc->amr_drive[ldrv].al_state = ae->ae_ldrv.al_state[ldrv]; 594 sc->amr_drive[ldrv].al_properties = ae->ae_ldrv.al_properties[ldrv]; 595 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 596 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 597 } 598 599 sc->amr_maxdrives = 8; 600 sc->amr_maxchan = ae->ae_adapter.aa_channels; 601 sc->amr_maxio = ae->ae_adapter.aa_maxio; 602 free(ae, M_DEVBUF); 603 } 604 605 /* 606 * Mark remaining drives as unused. 607 */ 608 for (; ldrv < AMR_MAXLD; ldrv++) 609 sc->amr_drive[ldrv].al_size = 0xffffffff; 610 611 /* 612 * Cap the maximum number of outstanding I/Os. AMI's Linux driver doesn't trust 613 * the controller's reported value, and lockups have been seen when we do. 614 */ 615 sc->amr_maxio = imin(sc->amr_maxio, AMR_LIMITCMD); 616 617 return(0); 618} 619 620/******************************************************************************** 621 * Run a generic enquiry-style command. 622 */ 623static void * 624amr_enquiry(struct amr_softc *sc, size_t bufsize, u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual) 625{ 626 struct amr_command *ac; 627 void *result; 628 u_int8_t *mbox; 629 int error; 630 631 debug_called(1); 632 633 error = 1; 634 result = NULL; 635 636 /* get ourselves a command buffer */ 637 if ((ac = amr_alloccmd(sc)) == NULL) 638 goto out; 639 /* allocate the response structure */ 640 if ((result = malloc(bufsize, M_DEVBUF, M_NOWAIT)) == NULL) 641 goto out; 642 /* set command flags */ 643 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 644 645 /* point the command at our data */ 646 ac->ac_data = result; 647 ac->ac_length = bufsize; 648 649 /* build the command proper */ 650 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 651 mbox[0] = cmd; 652 mbox[2] = cmdsub; 653 mbox[3] = cmdqual; 654 655 /* can't assume that interrupts are going to work here, so play it safe */ 656 if (amr_poll_command(ac)) 657 goto out; 658 error = ac->ac_status; 659 660 out: 661 if (ac != NULL) 662 amr_releasecmd(ac); 663 if ((error != 0) && (result != NULL)) { 664 free(result, M_DEVBUF); 665 result = NULL; 666 } 667 return(result); 668} 669 670/******************************************************************************** 671 * Flush the controller's internal cache, return status. 672 */ 673int 674amr_flush(struct amr_softc *sc) 675{ 676 struct amr_command *ac; 677 int error; 678 679 /* get ourselves a command buffer */ 680 error = 1; 681 if ((ac = amr_alloccmd(sc)) == NULL) 682 goto out; 683 /* set command flags */ 684 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 685 686 /* build the command proper */ 687 ac->ac_mailbox.mb_command = AMR_CMD_FLUSH; 688 689 /* we have to poll, as the system may be going down or otherwise damaged */ 690 if (amr_poll_command(ac)) 691 goto out; 692 error = ac->ac_status; 693 694 out: 695 if (ac != NULL) 696 amr_releasecmd(ac); 697 return(error); 698} 699 700/******************************************************************************** 701 * Try to find I/O work for the controller from one or more of the work queues. 702 * 703 * We make the assumption that if the controller is not ready to take a command 704 * at some given time, it will generate an interrupt at some later time when 705 * it is. 706 */ 707void 708amr_startio(struct amr_softc *sc) 709{ 710 struct amr_command *ac; 711 712 /* spin until something prevents us from doing any work */ 713 for (;;) { 714 715 /* try to get a ready command */ 716 ac = amr_dequeue_ready(sc); 717 718 /* if that failed, build a command from a bio */ 719 if (ac == NULL) 720 (void)amr_bio_command(sc, &ac); 721 722#ifdef AMR_SCSI_PASSTHROUGH 723 /* if that failed, build a command from a ccb */ 724 if (ac == NULL) 725 (void)amr_cam_command(sc, &ac); 726#endif 727 728 /* if we don't have anything to do, give up */ 729 if (ac == NULL) 730 break; 731 732 /* try to give the command to the controller; if this fails save it for later and give up */ 733 if (amr_start(ac)) { 734 debug(2, "controller busy, command deferred"); 735 amr_requeue_ready(ac); /* XXX schedule retry very soon? */ 736 break; 737 } 738 } 739} 740 741/******************************************************************************** 742 * Handle completion of an I/O command. 743 */ 744static void 745amr_completeio(struct amr_command *ac) 746{ 747 struct amr_softc *sc = ac->ac_sc; 748 749 if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */ 750 ac->ac_bio->bio_error = EIO; 751 ac->ac_bio->bio_flags |= BIO_ERROR; 752 753 device_printf(sc->amr_dev, "I/O error - 0x%x\n", ac->ac_status); 754/* amr_printcommand(ac);*/ 755 } 756 amrd_intr(ac->ac_bio); 757 amr_releasecmd(ac); 758} 759 760/******************************************************************************** 761 ******************************************************************************** 762 Command Processing 763 ******************************************************************************** 764 ********************************************************************************/ 765 766/******************************************************************************** 767 * Convert a bio off the top of the bio queue into a command. 768 */ 769static int 770amr_bio_command(struct amr_softc *sc, struct amr_command **acp) 771{ 772 struct amr_command *ac; 773 struct amrd_softc *amrd; 774 struct bio *bio; 775 int error; 776 int blkcount; 777 int driveno; 778 int cmd; 779 780 ac = NULL; 781 error = 0; 782 783 /* get a bio to work on */ 784 if ((bio = amr_dequeue_bio(sc)) == NULL) 785 goto out; 786 787 /* get a command */ 788 if ((ac = amr_alloccmd(sc)) == NULL) { 789 error = ENOMEM; 790 goto out; 791 } 792 793 /* connect the bio to the command */ 794 ac->ac_complete = amr_completeio; 795 ac->ac_bio = bio; 796 ac->ac_data = bio->bio_data; 797 ac->ac_length = bio->bio_bcount; 798 if (BIO_IS_READ(bio)) { 799 ac->ac_flags |= AMR_CMD_DATAIN; 800 cmd = AMR_CMD_LREAD; 801 } else { 802 ac->ac_flags |= AMR_CMD_DATAOUT; 803 cmd = AMR_CMD_LWRITE; 804 } 805 amrd = (struct amrd_softc *)bio->bio_dev->si_drv1; 806 driveno = amrd->amrd_drive - sc->amr_drive; 807 blkcount = (bio->bio_bcount + AMR_BLKSIZE - 1) / AMR_BLKSIZE; 808 809 ac->ac_mailbox.mb_command = cmd; 810 ac->ac_mailbox.mb_blkcount = blkcount; 811 ac->ac_mailbox.mb_lba = bio->bio_pblkno; 812 ac->ac_mailbox.mb_drive = driveno; 813 /* we fill in the s/g related data when the command is mapped */ 814 815 if ((bio->bio_pblkno + blkcount) > sc->amr_drive[driveno].al_size) 816 device_printf(sc->amr_dev, "I/O beyond end of unit (%lld,%d > %lu)\n", 817 (long long)bio->bio_pblkno, blkcount, 818 (u_long)sc->amr_drive[driveno].al_size); 819 820out: 821 if (error != 0) { 822 if (ac != NULL) 823 amr_releasecmd(ac); 824 if (bio != NULL) /* this breaks ordering... */ 825 amr_enqueue_bio(sc, bio); 826 } 827 *acp = ac; 828 return(error); 829} 830 831/******************************************************************************** 832 * Take a command, submit it to the controller and sleep until it completes 833 * or fails. Interrupts must be enabled, returns nonzero on error. 834 */ 835static int 836amr_wait_command(struct amr_command *ac) 837{ 838 int error, count; 839 840 debug_called(1); 841 842 ac->ac_complete = NULL; 843 ac->ac_flags |= AMR_CMD_SLEEP; 844 if ((error = amr_start(ac)) != 0) 845 return(error); 846 847 count = 0; 848 /* XXX better timeout? */ 849 while ((ac->ac_flags & AMR_CMD_BUSY) && (count < 30)) { 850 tsleep(ac, PRIBIO | PCATCH, "amrwcmd", hz); 851 } 852 return(0); 853} 854 855/******************************************************************************** 856 * Take a command, submit it to the controller and busy-wait for it to return. 857 * Returns nonzero on error. Can be safely called with interrupts enabled. 858 */ 859static int 860amr_poll_command(struct amr_command *ac) 861{ 862 struct amr_softc *sc = ac->ac_sc; 863 int error, count; 864 865 debug_called(2); 866 867 ac->ac_complete = NULL; 868 if ((error = amr_start(ac)) != 0) 869 return(error); 870 871 count = 0; 872 do { 873 /* 874 * Poll for completion, although the interrupt handler may beat us to it. 875 * Note that the timeout here is somewhat arbitrary. 876 */ 877 amr_done(sc); 878 DELAY(1000); 879 } while ((ac->ac_flags & AMR_CMD_BUSY) && (count++ < 1000)); 880 if (!(ac->ac_flags & AMR_CMD_BUSY)) { 881 error = 0; 882 } else { 883 /* XXX the slot is now marked permanently busy */ 884 error = EIO; 885 device_printf(sc->amr_dev, "polled command timeout\n"); 886 } 887 return(error); 888} 889 890/******************************************************************************** 891 * Get a free command slot for a command if it doesn't already have one. 892 * 893 * May be safely called multiple times for a given command. 894 */ 895static int 896amr_getslot(struct amr_command *ac) 897{ 898 struct amr_softc *sc = ac->ac_sc; 899 int s, slot, limit, error; 900 901 debug_called(3); 902 903 /* if the command already has a slot, don't try to give it another one */ 904 if (ac->ac_slot != 0) 905 return(0); 906 907 /* enforce slot usage limit */ 908 limit = (ac->ac_flags & AMR_CMD_PRIORITY) ? sc->amr_maxio : sc->amr_maxio - 4; 909 if (sc->amr_busyslots > limit) 910 return(EBUSY); 911 912 /* 913 * Allocate a slot. XXX linear scan is slow 914 */ 915 error = EBUSY; 916 s = splbio(); 917 for (slot = 0; slot < sc->amr_maxio; slot++) { 918 if (sc->amr_busycmd[slot] == NULL) { 919 sc->amr_busycmd[slot] = ac; 920 sc->amr_busyslots++; 921 ac->ac_slot = slot; 922 error = 0; 923 break; 924 } 925 } 926 splx(s); 927 928 return(error); 929} 930 931/******************************************************************************** 932 * Map/unmap (ac)'s data in the controller's addressable space as required. 933 * 934 * These functions may be safely called multiple times on a given command. 935 */ 936static void 937amr_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 938{ 939 struct amr_command *ac = (struct amr_command *)arg; 940 struct amr_softc *sc = ac->ac_sc; 941 struct amr_sgentry *sg; 942 int i; 943 u_int8_t *sgc; 944 945 debug_called(3); 946 947 /* get base address of s/g table */ 948 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 949 950 /* save data physical address */ 951 ac->ac_dataphys = segs[0].ds_addr; 952 953 /* for AMR_CMD_CONFIG the s/g count goes elsewhere */ 954 if (ac->ac_mailbox.mb_command == AMR_CMD_CONFIG) { 955 sgc = &(((struct amr_mailbox_ioctl *)&ac->ac_mailbox)->mb_param); 956 } else { 957 sgc = &ac->ac_mailbox.mb_nsgelem; 958 } 959 960 /* decide whether we need to populate the s/g table */ 961 if (nsegments < 2) { 962 *sgc = 0; 963 ac->ac_mailbox.mb_physaddr = ac->ac_dataphys; 964 } else { 965 *sgc = nsegments; 966 ac->ac_mailbox.mb_physaddr = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 967 for (i = 0; i < nsegments; i++, sg++) { 968 sg->sg_addr = segs[i].ds_addr; 969 sg->sg_count = segs[i].ds_len; 970 } 971 } 972} 973 974static void 975amr_setup_ccbmap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 976{ 977 struct amr_command *ac = (struct amr_command *)arg; 978 struct amr_softc *sc = ac->ac_sc; 979 struct amr_sgentry *sg; 980 struct amr_passthrough *ap = (struct amr_passthrough *)ac->ac_data; 981 int i; 982 983 /* get base address of s/g table */ 984 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 985 986 /* save s/g table information in passthrough */ 987 ap->ap_no_sg_elements = nsegments; 988 ap->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 989 990 /* save pointer to passthrough in command XXX is this already done above? */ 991 ac->ac_mailbox.mb_physaddr = ac->ac_dataphys; 992 993 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 994 ap->ap_no_sg_elements, ap->ap_data_transfer_address, ac->ac_dataphys); 995 996 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 997 for (i = 0; i < nsegments; i++, sg++) { 998 sg->sg_addr = segs[i].ds_addr; 999 sg->sg_count = segs[i].ds_len; 1000 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1001 } 1002} 1003 1004static void 1005amr_mapcmd(struct amr_command *ac) 1006{ 1007 struct amr_softc *sc = ac->ac_sc; 1008 1009 debug_called(3); 1010 1011 /* if the command involves data at all, and hasn't been mapped */ 1012 if (!(ac->ac_flags & AMR_CMD_MAPPED)) { 1013 1014 if (ac->ac_data != NULL) { 1015 /* map the data buffers into bus space and build the s/g list */ 1016 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_dmamap, ac->ac_data, ac->ac_length, 1017 amr_setup_dmamap, ac, 0); 1018 if (ac->ac_flags & AMR_CMD_DATAIN) 1019 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREREAD); 1020 if (ac->ac_flags & AMR_CMD_DATAOUT) 1021 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREWRITE); 1022 } 1023 1024 if (ac->ac_ccb_data != NULL) { 1025 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, ac->ac_ccb_data, ac->ac_ccb_length, 1026 amr_setup_ccbmap, ac, 0); 1027 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1028 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREREAD); 1029 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1030 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREWRITE); 1031 } 1032 ac->ac_flags |= AMR_CMD_MAPPED; 1033 } 1034} 1035 1036static void 1037amr_unmapcmd(struct amr_command *ac) 1038{ 1039 struct amr_softc *sc = ac->ac_sc; 1040 1041 debug_called(3); 1042 1043 /* if the command involved data at all and was mapped */ 1044 if (ac->ac_flags & AMR_CMD_MAPPED) { 1045 1046 if (ac->ac_data != NULL) { 1047 if (ac->ac_flags & AMR_CMD_DATAIN) 1048 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTREAD); 1049 if (ac->ac_flags & AMR_CMD_DATAOUT) 1050 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE); 1051 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap); 1052 } 1053 1054 if (ac->ac_ccb_data != NULL) { 1055 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1056 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTREAD); 1057 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1058 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTWRITE); 1059 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_ccb_dmamap); 1060 } 1061 ac->ac_flags &= ~AMR_CMD_MAPPED; 1062 } 1063} 1064 1065/******************************************************************************** 1066 * Take a command and give it to the controller, returns 0 if successful, or 1067 * EBUSY if the command should be retried later. 1068 */ 1069static int 1070amr_start(struct amr_command *ac) 1071{ 1072 struct amr_softc *sc = ac->ac_sc; 1073 int done, s, i; 1074 1075 debug_called(3); 1076 1077 /* mark command as busy so that polling consumer can tell */ 1078 ac->ac_flags |= AMR_CMD_BUSY; 1079 1080 /* get a command slot (freed in amr_done) */ 1081 if (amr_getslot(ac)) 1082 return(EBUSY); 1083 1084 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 1085 amr_mapcmd(ac); 1086 1087 /* mark the new mailbox we are going to copy in as busy */ 1088 ac->ac_mailbox.mb_busy = 1; 1089 1090 /* clear the poll/ack fields in the mailbox */ 1091 sc->amr_mailbox->mb_poll = 0; 1092 sc->amr_mailbox->mb_ack = 0; 1093 1094 /* 1095 * Save the slot number so that we can locate this command when complete. 1096 * Note that ident = 0 seems to be special, so we don't use it. 1097 */ 1098 ac->ac_mailbox.mb_ident = ac->ac_slot + 1; 1099 1100 /* 1101 * Spin waiting for the mailbox, give up after ~1 second. We expect the 1102 * controller to be able to handle our I/O. 1103 * 1104 * XXX perhaps we should wait for less time, and count on the deferred command 1105 * handling to deal with retries? 1106 */ 1107 debug(4, "wait for mailbox"); 1108 for (i = 10000, done = 0; (i > 0) && !done; i--) { 1109 s = splbio(); 1110 1111 /* is the mailbox free? */ 1112 if (sc->amr_mailbox->mb_busy == 0) { 1113 debug(4, "got mailbox"); 1114 sc->amr_mailbox64->mb64_segment = 0; 1115 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 1116 done = 1; 1117 1118 /* not free, spin waiting */ 1119 } else { 1120 debug(4, "busy flag %x\n", sc->amr_mailbox->mb_busy); 1121 /* this is somewhat ugly */ 1122 DELAY(100); 1123 } 1124 splx(s); /* drop spl to allow completion interrupts */ 1125 } 1126 1127 /* 1128 * Now give the command to the controller 1129 */ 1130 if (done) { 1131 if (sc->amr_submit_command(sc)) { 1132 /* the controller wasn't ready to take the command, forget that we tried to post it */ 1133 sc->amr_mailbox->mb_busy = 0; 1134 return(EBUSY); 1135 } 1136 debug(3, "posted command"); 1137 return(0); 1138 } 1139 1140 /* 1141 * The controller wouldn't take the command. Return the command as busy 1142 * so that it is retried later. 1143 */ 1144 return(EBUSY); 1145} 1146 1147/******************************************************************************** 1148 * Extract one or more completed commands from the controller (sc) 1149 * 1150 * Returns nonzero if any commands on the work queue were marked as completed. 1151 */ 1152int 1153amr_done(struct amr_softc *sc) 1154{ 1155 struct amr_command *ac; 1156 struct amr_mailbox mbox; 1157 int i, idx, result; 1158 1159 debug_called(3); 1160 1161 /* See if there's anything for us to do */ 1162 result = 0; 1163 1164 /* loop collecting completed commands */ 1165 for (;;) { 1166 /* poll for a completed command's identifier and status */ 1167 if (sc->amr_get_work(sc, &mbox)) { 1168 result = 1; 1169 1170 /* iterate over completed commands in this result */ 1171 for (i = 0; i < mbox.mb_nstatus; i++) { 1172 /* get pointer to busy command */ 1173 idx = mbox.mb_completed[i] - 1; 1174 ac = sc->amr_busycmd[idx]; 1175 1176 /* really a busy command? */ 1177 if (ac != NULL) { 1178 1179 /* pull the command from the busy index */ 1180 sc->amr_busycmd[idx] = NULL; 1181 sc->amr_busyslots--; 1182 1183 /* save status for later use */ 1184 ac->ac_status = mbox.mb_status; 1185 amr_enqueue_completed(ac); 1186 debug(3, "completed command with status %x", mbox.mb_status); 1187 } else { 1188 device_printf(sc->amr_dev, "bad slot %d completed\n", idx); 1189 } 1190 } 1191 } else { 1192 break; /* no work */ 1193 } 1194 } 1195 1196 /* if we've completed any commands, try posting some more */ 1197 if (result) 1198 amr_startio(sc); 1199 1200 /* handle completion and timeouts */ 1201#if __FreeBSD_version >= 500005 1202 if (sc->amr_state & AMR_STATE_INTEN) 1203 taskqueue_enqueue(taskqueue_swi, &sc->amr_task_complete); 1204 else 1205#endif 1206 amr_complete(sc, 0); 1207 1208 return(result); 1209} 1210 1211/******************************************************************************** 1212 * Do completion processing on done commands on (sc) 1213 */ 1214static void 1215amr_complete(void *context, int pending) 1216{ 1217 struct amr_softc *sc = (struct amr_softc *)context; 1218 struct amr_command *ac; 1219 1220 debug_called(3); 1221 1222 /* pull completed commands off the queue */ 1223 for (;;) { 1224 ac = amr_dequeue_completed(sc); 1225 if (ac == NULL) 1226 break; 1227 1228 /* unmap the command's data buffer */ 1229 amr_unmapcmd(ac); 1230 1231 /* unbusy the command */ 1232 ac->ac_flags &= ~AMR_CMD_BUSY; 1233 1234 /* 1235 * Is there a completion handler? 1236 */ 1237 if (ac->ac_complete != NULL) { 1238 ac->ac_complete(ac); 1239 1240 /* 1241 * Is someone sleeping on this one? 1242 */ 1243 } else if (ac->ac_flags & AMR_CMD_SLEEP) { 1244 wakeup(ac); 1245 } 1246 } 1247} 1248 1249/******************************************************************************** 1250 ******************************************************************************** 1251 Command Buffer Management 1252 ******************************************************************************** 1253 ********************************************************************************/ 1254 1255/******************************************************************************** 1256 * Get a new command buffer. 1257 * 1258 * This may return NULL in low-memory cases. 1259 * 1260 * If possible, we recycle a command buffer that's been used before. 1261 */ 1262struct amr_command * 1263amr_alloccmd(struct amr_softc *sc) 1264{ 1265 struct amr_command *ac; 1266 1267 debug_called(3); 1268 1269 ac = amr_dequeue_free(sc); 1270 if (ac == NULL) { 1271 amr_alloccmd_cluster(sc); 1272 ac = amr_dequeue_free(sc); 1273 } 1274 if (ac == NULL) 1275 return(NULL); 1276 1277 /* clear out significant fields */ 1278 ac->ac_slot = 0; 1279 ac->ac_status = 0; 1280 bzero(&ac->ac_mailbox, sizeof(struct amr_mailbox)); 1281 ac->ac_flags = 0; 1282 ac->ac_bio = NULL; 1283 ac->ac_data = NULL; 1284 ac->ac_ccb_data = NULL; 1285 ac->ac_complete = NULL; 1286 return(ac); 1287} 1288 1289/******************************************************************************** 1290 * Release a command buffer for recycling. 1291 */ 1292void 1293amr_releasecmd(struct amr_command *ac) 1294{ 1295 debug_called(3); 1296 1297 amr_enqueue_free(ac); 1298} 1299 1300/******************************************************************************** 1301 * Allocate a new command cluster and initialise it. 1302 */ 1303static void 1304amr_alloccmd_cluster(struct amr_softc *sc) 1305{ 1306 struct amr_command_cluster *acc; 1307 struct amr_command *ac; 1308 int s, i; 1309 1310 acc = malloc(AMR_CMD_CLUSTERSIZE, M_DEVBUF, M_NOWAIT); 1311 if (acc != NULL) { 1312 s = splbio(); 1313 TAILQ_INSERT_TAIL(&sc->amr_cmd_clusters, acc, acc_link); 1314 splx(s); 1315 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) { 1316 ac = &acc->acc_command[i]; 1317 bzero(ac, sizeof(*ac)); 1318 ac->ac_sc = sc; 1319 if (!bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_dmamap) && 1320 !bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_ccb_dmamap)) 1321 amr_releasecmd(ac); 1322 } 1323 } 1324} 1325 1326/******************************************************************************** 1327 * Free a command cluster 1328 */ 1329static void 1330amr_freecmd_cluster(struct amr_command_cluster *acc) 1331{ 1332 struct amr_softc *sc = acc->acc_command[0].ac_sc; 1333 int i; 1334 1335 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) 1336 bus_dmamap_destroy(sc->amr_buffer_dmat, acc->acc_command[i].ac_dmamap); 1337 free(acc, M_DEVBUF); 1338} 1339 1340/******************************************************************************** 1341 ******************************************************************************** 1342 Interface-specific Shims 1343 ******************************************************************************** 1344 ********************************************************************************/ 1345 1346/******************************************************************************** 1347 * Tell the controller that the mailbox contains a valid command 1348 */ 1349static int 1350amr_quartz_submit_command(struct amr_softc *sc) 1351{ 1352 debug_called(3); 1353 1354 if (AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT) 1355 return(EBUSY); 1356 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1357 return(0); 1358} 1359 1360static int 1361amr_std_submit_command(struct amr_softc *sc) 1362{ 1363 debug_called(3); 1364 1365 if (AMR_SGET_MBSTAT(sc) & AMR_SMBOX_BUSYFLAG) 1366 return(EBUSY); 1367 AMR_SPOST_COMMAND(sc); 1368 return(0); 1369} 1370 1371/******************************************************************************** 1372 * Claim any work that the controller has completed; acknowledge completion, 1373 * save details of the completion in (mbsave) 1374 */ 1375static int 1376amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1377{ 1378 int s, worked; 1379 u_int32_t outd; 1380 1381 debug_called(3); 1382 1383 worked = 0; 1384 s = splbio(); 1385 1386 /* work waiting for us? */ 1387 if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) { 1388 1389 /* save mailbox, which contains a list of completed commands */ 1390 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1391 1392 /* acknowledge interrupt */ 1393 AMR_QPUT_ODB(sc, AMR_QODB_READY); 1394 1395 /* acknowledge that we have the commands */ 1396 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1397 1398#ifndef AMR_QUARTZ_GOFASTER 1399 /* 1400 * This waits for the controller to notice that we've taken the 1401 * command from it. It's very inefficient, and we shouldn't do it, 1402 * but if we remove this code, we stop completing commands under 1403 * load. 1404 * 1405 * Peter J says we shouldn't do this. The documentation says we 1406 * should. Who is right? 1407 */ 1408 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK) 1409 ; /* XXX aiee! what if it dies? */ 1410#endif 1411 1412 worked = 1; /* got some work */ 1413 } 1414 1415 splx(s); 1416 return(worked); 1417} 1418 1419static int 1420amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1421{ 1422 int s, worked; 1423 u_int8_t istat; 1424 1425 debug_called(3); 1426 1427 worked = 0; 1428 s = splbio(); 1429 1430 /* check for valid interrupt status */ 1431 istat = AMR_SGET_ISTAT(sc); 1432 if ((istat & AMR_SINTR_VALID) != 0) { 1433 AMR_SPUT_ISTAT(sc, istat); /* ack interrupt status */ 1434 1435 /* save mailbox, which contains a list of completed commands */ 1436 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1437 1438 AMR_SACK_INTERRUPT(sc); /* acknowledge we have the mailbox */ 1439 worked = 1; 1440 } 1441 1442 splx(s); 1443 return(worked); 1444} 1445 1446/******************************************************************************** 1447 * Notify the controller of the mailbox location. 1448 */ 1449static void 1450amr_std_attach_mailbox(struct amr_softc *sc) 1451{ 1452 1453 /* program the mailbox physical address */ 1454 AMR_SBYTE_SET(sc, AMR_SMBOX_0, sc->amr_mailboxphys & 0xff); 1455 AMR_SBYTE_SET(sc, AMR_SMBOX_1, (sc->amr_mailboxphys >> 8) & 0xff); 1456 AMR_SBYTE_SET(sc, AMR_SMBOX_2, (sc->amr_mailboxphys >> 16) & 0xff); 1457 AMR_SBYTE_SET(sc, AMR_SMBOX_3, (sc->amr_mailboxphys >> 24) & 0xff); 1458 AMR_SBYTE_SET(sc, AMR_SMBOX_ENABLE, AMR_SMBOX_ADDR); 1459 1460 /* clear any outstanding interrupt and enable interrupts proper */ 1461 AMR_SACK_INTERRUPT(sc); 1462 AMR_SENABLE_INTR(sc); 1463} 1464 1465#ifdef AMR_BOARD_INIT 1466/******************************************************************************** 1467 * Initialise the controller 1468 */ 1469static int 1470amr_quartz_init(struct amr_softc *sc) 1471{ 1472 int status, ostatus; 1473 1474 device_printf(sc->amr_dev, "initial init status %x\n", AMR_QGET_INITSTATUS(sc)); 1475 1476 AMR_QRESET(sc); 1477 1478 ostatus = 0xff; 1479 while ((status = AMR_QGET_INITSTATUS(sc)) != AMR_QINIT_DONE) { 1480 if (status != ostatus) { 1481 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_qinit, status)); 1482 ostatus = status; 1483 } 1484 switch (status) { 1485 case AMR_QINIT_NOMEM: 1486 return(ENOMEM); 1487 1488 case AMR_QINIT_SCAN: 1489 /* XXX we could print channel/target here */ 1490 break; 1491 } 1492 } 1493 return(0); 1494} 1495 1496static int 1497amr_std_init(struct amr_softc *sc) 1498{ 1499 int status, ostatus; 1500 1501 device_printf(sc->amr_dev, "initial init status %x\n", AMR_SGET_INITSTATUS(sc)); 1502 1503 AMR_SRESET(sc); 1504 1505 ostatus = 0xff; 1506 while ((status = AMR_SGET_INITSTATUS(sc)) != AMR_SINIT_DONE) { 1507 if (status != ostatus) { 1508 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_sinit, status)); 1509 ostatus = status; 1510 } 1511 switch (status) { 1512 case AMR_SINIT_NOMEM: 1513 return(ENOMEM); 1514 1515 case AMR_SINIT_INPROG: 1516 /* XXX we could print channel/target here? */ 1517 break; 1518 } 1519 } 1520 return(0); 1521} 1522#endif 1523 1524/******************************************************************************** 1525 ******************************************************************************** 1526 Debugging 1527 ******************************************************************************** 1528 ********************************************************************************/ 1529 1530/******************************************************************************** 1531 * Identify the controller and print some information about it. 1532 */ 1533static void 1534amr_describe_controller(struct amr_softc *sc) 1535{ 1536 struct amr_prodinfo *ap; 1537 struct amr_enquiry *ae; 1538 char *prod; 1539 1540 /* 1541 * Try to get 40LD product info, which tells us what the card is labelled as. 1542 */ 1543 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) != NULL) { 1544 device_printf(sc->amr_dev, "<%.80s> Firmware %.16s, BIOS %.16s, %dMB RAM\n", 1545 ap->ap_product, ap->ap_firmware, ap->ap_bios, 1546 ap->ap_memsize); 1547 1548 free(ap, M_DEVBUF); 1549 return; 1550 } 1551 1552 /* 1553 * Try 8LD extended ENQUIRY to get controller signature, and use lookup table. 1554 */ 1555 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) != NULL) { 1556 prod = amr_describe_code(amr_table_adaptertype, ae->ae_signature); 1557 1558 } else if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) != NULL) { 1559 1560 /* 1561 * Try to work it out based on the PCI signatures. 1562 */ 1563 switch (pci_get_device(sc->amr_dev)) { 1564 case 0x9010: 1565 prod = "Series 428"; 1566 break; 1567 case 0x9060: 1568 prod = "Series 434"; 1569 break; 1570 default: 1571 prod = "unknown controller"; 1572 break; 1573 } 1574 } else { 1575 prod = "unsupported controller"; 1576 } 1577 1578 /* 1579 * HP NetRaid controllers have a special encoding of the firmware and 1580 * BIOS versions. The AMI version seems to have it as strings whereas 1581 * the HP version does it with a leading uppercase character and two 1582 * binary numbers. 1583 */ 1584 1585 if(ae->ae_adapter.aa_firmware[2] >= 'A' && 1586 ae->ae_adapter.aa_firmware[2] <= 'Z' && 1587 ae->ae_adapter.aa_firmware[1] < ' ' && 1588 ae->ae_adapter.aa_firmware[0] < ' ' && 1589 ae->ae_adapter.aa_bios[2] >= 'A' && 1590 ae->ae_adapter.aa_bios[2] <= 'Z' && 1591 ae->ae_adapter.aa_bios[1] < ' ' && 1592 ae->ae_adapter.aa_bios[0] < ' ') { 1593 1594 /* this looks like we have an HP NetRaid version of the MegaRaid */ 1595 1596 if(ae->ae_signature == AMR_SIG_438) { 1597 /* the AMI 438 is an NetRaid 3si in HP-land */ 1598 prod = "HP NetRaid 3si"; 1599 } 1600 1601 device_printf(sc->amr_dev, "<%s> Firmware %c.%02d.%02d, BIOS %c.%02d.%02d, %dMB RAM\n", 1602 prod, ae->ae_adapter.aa_firmware[2], 1603 ae->ae_adapter.aa_firmware[1], 1604 ae->ae_adapter.aa_firmware[0], 1605 ae->ae_adapter.aa_bios[2], 1606 ae->ae_adapter.aa_bios[1], 1607 ae->ae_adapter.aa_bios[0], 1608 ae->ae_adapter.aa_memorysize); 1609 } else { 1610 device_printf(sc->amr_dev, "<%s> Firmware %.4s, BIOS %.4s, %dMB RAM\n", 1611 prod, ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios, 1612 ae->ae_adapter.aa_memorysize); 1613 } 1614 free(ae, M_DEVBUF); 1615} 1616 1617#ifdef AMR_DEBUG 1618/******************************************************************************** 1619 * Print the command (ac) in human-readable format 1620 */ 1621static void 1622amr_printcommand(struct amr_command *ac) 1623{ 1624 struct amr_softc *sc = ac->ac_sc; 1625 struct amr_sgentry *sg; 1626 int i; 1627 1628 device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n", 1629 ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive); 1630 device_printf(sc->amr_dev, "blkcount %d lba %d\n", 1631 ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba); 1632 device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length); 1633 device_printf(sc->amr_dev, "sg physaddr %08x nsg %d\n", 1634 ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem); 1635 device_printf(sc->amr_dev, "ccb %p bio %p\n", ac->ac_ccb_data, ac->ac_bio); 1636 1637 /* get base address of s/g table */ 1638 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1639 for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++) 1640 device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count); 1641} 1642#endif 1643