amr.c revision 130585
1/*- 2 * 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/* 28 * Copyright (c) 2002 Eric Moore 29 * Copyright (c) 2002 LSI Logic Corporation 30 * All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. The party using or redistributing the source code and binary forms 41 * agrees to the disclaimer below and the terms and conditions set forth 42 * herein. 43 * 44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 45 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 47 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 50 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 52 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 54 * SUCH DAMAGE. 55 */ 56 57#include <sys/cdefs.h> 58__FBSDID("$FreeBSD: head/sys/dev/amr/amr.c 130585 2004-06-16 09:47:26Z phk $"); 59 60/* 61 * Driver for the AMI MegaRaid family of controllers. 62 */ 63 64#include <sys/param.h> 65#include <sys/systm.h> 66#include <sys/malloc.h> 67#include <sys/kernel.h> 68 69#include <dev/amr/amr_compat.h> 70#include <sys/bus.h> 71#include <sys/conf.h> 72#include <sys/stat.h> 73 74#include <machine/bus_memio.h> 75#include <machine/bus_pio.h> 76#include <machine/bus.h> 77#include <machine/resource.h> 78#include <sys/rman.h> 79 80#include <dev/pci/pcireg.h> 81#include <dev/pci/pcivar.h> 82 83#include <dev/amr/amrio.h> 84#include <dev/amr/amrreg.h> 85#include <dev/amr/amrvar.h> 86#define AMR_DEFINE_TABLES 87#include <dev/amr/amr_tables.h> 88 89static d_open_t amr_open; 90static d_close_t amr_close; 91static d_ioctl_t amr_ioctl; 92 93static struct cdevsw amr_cdevsw = { 94 .d_version = D_VERSION, 95 .d_flags = D_NEEDGIANT, 96 .d_open = amr_open, 97 .d_close = amr_close, 98 .d_ioctl = amr_ioctl, 99 .d_name = "amr", 100}; 101 102/* 103 * Initialisation, bus interface. 104 */ 105static void amr_startup(void *arg); 106 107/* 108 * Command wrappers 109 */ 110static int amr_query_controller(struct amr_softc *sc); 111static void *amr_enquiry(struct amr_softc *sc, size_t bufsize, 112 u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual); 113static void amr_completeio(struct amr_command *ac); 114static int amr_support_ext_cdb(struct amr_softc *sc); 115 116/* 117 * Command buffer allocation. 118 */ 119static void amr_alloccmd_cluster(struct amr_softc *sc); 120static void amr_freecmd_cluster(struct amr_command_cluster *acc); 121 122/* 123 * Command processing. 124 */ 125static int amr_bio_command(struct amr_softc *sc, struct amr_command **acp); 126static int amr_wait_command(struct amr_command *ac); 127static int amr_getslot(struct amr_command *ac); 128static void amr_mapcmd(struct amr_command *ac); 129static void amr_unmapcmd(struct amr_command *ac); 130static int amr_start(struct amr_command *ac); 131static void amr_complete(void *context, int pending); 132 133/* 134 * Status monitoring 135 */ 136static void amr_periodic(void *data); 137 138/* 139 * Interface-specific shims 140 */ 141static int amr_quartz_submit_command(struct amr_softc *sc); 142static int amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 143static int amr_quartz_poll_command(struct amr_command *ac); 144 145static int amr_std_submit_command(struct amr_softc *sc); 146static int amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 147static int amr_std_poll_command(struct amr_command *ac); 148static void amr_std_attach_mailbox(struct amr_softc *sc); 149 150#ifdef AMR_BOARD_INIT 151static int amr_quartz_init(struct amr_softc *sc); 152static int amr_std_init(struct amr_softc *sc); 153#endif 154 155/* 156 * Debugging 157 */ 158static void amr_describe_controller(struct amr_softc *sc); 159#ifdef AMR_DEBUG 160#if 0 161static void amr_printcommand(struct amr_command *ac); 162#endif 163#endif 164 165/******************************************************************************** 166 ******************************************************************************** 167 Inline Glue 168 ******************************************************************************** 169 ********************************************************************************/ 170 171/******************************************************************************** 172 ******************************************************************************** 173 Public Interfaces 174 ******************************************************************************** 175 ********************************************************************************/ 176 177/******************************************************************************** 178 * Initialise the controller and softc. 179 */ 180int 181amr_attach(struct amr_softc *sc) 182{ 183 184 debug_called(1); 185 186 /* 187 * Initialise per-controller queues. 188 */ 189 TAILQ_INIT(&sc->amr_completed); 190 TAILQ_INIT(&sc->amr_freecmds); 191 TAILQ_INIT(&sc->amr_cmd_clusters); 192 TAILQ_INIT(&sc->amr_ready); 193 bioq_init(&sc->amr_bioq); 194 195#if __FreeBSD_version >= 500005 196 /* 197 * Initialise command-completion task. 198 */ 199 TASK_INIT(&sc->amr_task_complete, 0, amr_complete, sc); 200#endif 201 202 debug(2, "queue init done"); 203 204 /* 205 * Configure for this controller type. 206 */ 207 if (AMR_IS_QUARTZ(sc)) { 208 sc->amr_submit_command = amr_quartz_submit_command; 209 sc->amr_get_work = amr_quartz_get_work; 210 sc->amr_poll_command = amr_quartz_poll_command; 211 } else { 212 sc->amr_submit_command = amr_std_submit_command; 213 sc->amr_get_work = amr_std_get_work; 214 sc->amr_poll_command = amr_std_poll_command; 215 amr_std_attach_mailbox(sc);; 216 } 217 218#ifdef AMR_BOARD_INIT 219 if ((AMR_IS_QUARTZ(sc) ? amr_quartz_init(sc) : amr_std_init(sc)))) 220 return(ENXIO); 221#endif 222 223 /* 224 * Quiz controller for features and limits. 225 */ 226 if (amr_query_controller(sc)) 227 return(ENXIO); 228 229 debug(2, "controller query complete"); 230 231 /* 232 * Attach our 'real' SCSI channels to CAM. 233 */ 234 if (amr_cam_attach(sc)) 235 return(ENXIO); 236 debug(2, "CAM attach done"); 237 238 /* 239 * Create the control device. 240 */ 241 sc->amr_dev_t = make_dev(&amr_cdevsw, device_get_unit(sc->amr_dev), UID_ROOT, GID_OPERATOR, 242 S_IRUSR | S_IWUSR, "amr%d", device_get_unit(sc->amr_dev)); 243 sc->amr_dev_t->si_drv1 = sc; 244 245 /* 246 * Schedule ourselves to bring the controller up once interrupts are 247 * available. 248 */ 249 bzero(&sc->amr_ich, sizeof(struct intr_config_hook)); 250 sc->amr_ich.ich_func = amr_startup; 251 sc->amr_ich.ich_arg = sc; 252 if (config_intrhook_establish(&sc->amr_ich) != 0) { 253 device_printf(sc->amr_dev, "can't establish configuration hook\n"); 254 return(ENOMEM); 255 } 256 257 /* 258 * Print a little information about the controller. 259 */ 260 amr_describe_controller(sc); 261 262 debug(2, "attach complete"); 263 return(0); 264} 265 266/******************************************************************************** 267 * Locate disk resources and attach children to them. 268 */ 269static void 270amr_startup(void *arg) 271{ 272 struct amr_softc *sc = (struct amr_softc *)arg; 273 struct amr_logdrive *dr; 274 int i, error; 275 276 debug_called(1); 277 278 /* pull ourselves off the intrhook chain */ 279 config_intrhook_disestablish(&sc->amr_ich); 280 281 /* get up-to-date drive information */ 282 if (amr_query_controller(sc)) { 283 device_printf(sc->amr_dev, "can't scan controller for drives\n"); 284 return; 285 } 286 287 /* iterate over available drives */ 288 for (i = 0, dr = &sc->amr_drive[0]; (i < AMR_MAXLD) && (dr->al_size != 0xffffffff); i++, dr++) { 289 /* are we already attached to this drive? */ 290 if (dr->al_disk == 0) { 291 /* generate geometry information */ 292 if (dr->al_size > 0x200000) { /* extended translation? */ 293 dr->al_heads = 255; 294 dr->al_sectors = 63; 295 } else { 296 dr->al_heads = 64; 297 dr->al_sectors = 32; 298 } 299 dr->al_cylinders = dr->al_size / (dr->al_heads * dr->al_sectors); 300 301 dr->al_disk = device_add_child(sc->amr_dev, NULL, -1); 302 if (dr->al_disk == 0) 303 device_printf(sc->amr_dev, "device_add_child failed\n"); 304 device_set_ivars(dr->al_disk, dr); 305 } 306 } 307 308 if ((error = bus_generic_attach(sc->amr_dev)) != 0) 309 device_printf(sc->amr_dev, "bus_generic_attach returned %d\n", error); 310 311 /* mark controller back up */ 312 sc->amr_state &= ~AMR_STATE_SHUTDOWN; 313 314 /* interrupts will be enabled before we do anything more */ 315 sc->amr_state |= AMR_STATE_INTEN; 316 317 /* 318 * Start the timeout routine. 319 */ 320/* sc->amr_timeout = timeout(amr_periodic, sc, hz);*/ 321 322 return; 323} 324 325/******************************************************************************* 326 * Free resources associated with a controller instance 327 */ 328void 329amr_free(struct amr_softc *sc) 330{ 331 struct amr_command_cluster *acc; 332 333 /* detach from CAM */ 334 amr_cam_detach(sc); 335 336 /* cancel status timeout */ 337 untimeout(amr_periodic, sc, sc->amr_timeout); 338 339 /* throw away any command buffers */ 340 while ((acc = TAILQ_FIRST(&sc->amr_cmd_clusters)) != NULL) { 341 TAILQ_REMOVE(&sc->amr_cmd_clusters, acc, acc_link); 342 amr_freecmd_cluster(acc); 343 } 344 345 /* destroy control device */ 346 if( sc->amr_dev_t != (struct cdev *)NULL) 347 destroy_dev(sc->amr_dev_t); 348} 349 350/******************************************************************************* 351 * Receive a bio structure from a child device and queue it on a particular 352 * disk resource, then poke the disk resource to start as much work as it can. 353 */ 354int 355amr_submit_bio(struct amr_softc *sc, struct bio *bio) 356{ 357 debug_called(2); 358 359 amr_enqueue_bio(sc, bio); 360 amr_startio(sc); 361 return(0); 362} 363 364/******************************************************************************** 365 * Accept an open operation on the control device. 366 */ 367static int 368amr_open(struct cdev *dev, int flags, int fmt, d_thread_t *td) 369{ 370 int unit = minor(dev); 371 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 372 373 debug_called(1); 374 375 sc->amr_state |= AMR_STATE_OPEN; 376 return(0); 377} 378 379/******************************************************************************** 380 * Accept the last close on the control device. 381 */ 382static int 383amr_close(struct cdev *dev, int flags, int fmt, d_thread_t *td) 384{ 385 int unit = minor(dev); 386 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 387 388 debug_called(1); 389 390 sc->amr_state &= ~AMR_STATE_OPEN; 391 return (0); 392} 393 394/******************************************************************************** 395 * Handle controller-specific control operations. 396 */ 397static int 398amr_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *td) 399{ 400 struct amr_softc *sc = (struct amr_softc *)dev->si_drv1; 401 int *arg = (int *)addr; 402 struct amr_user_ioctl *au = (struct amr_user_ioctl *)addr; 403 struct amr_command *ac; 404 struct amr_mailbox_ioctl *mbi; 405 struct amr_passthrough *ap; 406 void *dp; 407 int error; 408 409 debug_called(1); 410 411 error = 0; 412 dp = NULL; 413 ap = NULL; 414 ac = NULL; 415 switch(cmd) { 416 417 case AMR_IO_VERSION: 418 debug(1, "AMR_IO_VERSION"); 419 *arg = AMR_IO_VERSION_NUMBER; 420 break; 421 422 case AMR_IO_COMMAND: 423 debug(1, "AMR_IO_COMMAND 0x%x", au->au_cmd[0]); 424 /* handle inbound data buffer */ 425 if (au->au_length != 0) { 426 if ((dp = malloc(au->au_length, M_DEVBUF, M_WAITOK)) == NULL) { 427 error = ENOMEM; 428 break; 429 } 430 if ((error = copyin(au->au_buffer, dp, au->au_length)) != 0) 431 break; 432 debug(2, "copyin %ld bytes from %p -> %p", au->au_length, au->au_buffer, dp); 433 } 434 435 if ((ac = amr_alloccmd(sc)) == NULL) { 436 error = ENOMEM; 437 break; 438 } 439 440 /* handle SCSI passthrough command */ 441 if (au->au_cmd[0] == AMR_CMD_PASS) { 442 if ((ap = malloc(sizeof(*ap), M_DEVBUF, M_WAITOK | M_ZERO)) == NULL) { 443 error = ENOMEM; 444 break; 445 } 446 447 /* copy cdb */ 448 ap->ap_cdb_length = au->au_cmd[2]; 449 bcopy(&au->au_cmd[3], &ap->ap_cdb[0], ap->ap_cdb_length); 450 451 /* build passthrough */ 452 ap->ap_timeout = au->au_cmd[ap->ap_cdb_length + 3] & 0x07; 453 ap->ap_ars = (au->au_cmd[ap->ap_cdb_length + 3] & 0x08) ? 1 : 0; 454 ap->ap_islogical = (au->au_cmd[ap->ap_cdb_length + 3] & 0x80) ? 1 : 0; 455 ap->ap_logical_drive_no = au->au_cmd[ap->ap_cdb_length + 4]; 456 ap->ap_channel = au->au_cmd[ap->ap_cdb_length + 5]; 457 ap->ap_scsi_id = au->au_cmd[ap->ap_cdb_length + 6]; 458 ap->ap_request_sense_length = 14; 459 ap->ap_data_transfer_length = au->au_length; 460 /* XXX what about the request-sense area? does the caller want it? */ 461 462 /* build command */ 463 ac->ac_data = ap; 464 ac->ac_length = sizeof(*ap); 465 ac->ac_flags |= AMR_CMD_DATAOUT; 466 ac->ac_ccb_data = dp; 467 ac->ac_ccb_length = au->au_length; 468 if (au->au_direction & AMR_IO_READ) 469 ac->ac_flags |= AMR_CMD_CCB_DATAIN; 470 if (au->au_direction & AMR_IO_WRITE) 471 ac->ac_flags |= AMR_CMD_CCB_DATAOUT; 472 473 ac->ac_mailbox.mb_command = AMR_CMD_PASS; 474 475 } else { 476 /* direct command to controller */ 477 mbi = (struct amr_mailbox_ioctl *)&ac->ac_mailbox; 478 479 /* copy pertinent mailbox items */ 480 mbi->mb_command = au->au_cmd[0]; 481 mbi->mb_channel = au->au_cmd[1]; 482 mbi->mb_param = au->au_cmd[2]; 483 mbi->mb_pad[0] = au->au_cmd[3]; 484 mbi->mb_drive = au->au_cmd[4]; 485 486 /* build the command */ 487 ac->ac_data = dp; 488 ac->ac_length = au->au_length; 489 if (au->au_direction & AMR_IO_READ) 490 ac->ac_flags |= AMR_CMD_DATAIN; 491 if (au->au_direction & AMR_IO_WRITE) 492 ac->ac_flags |= AMR_CMD_DATAOUT; 493 } 494 495 /* run the command */ 496 if ((error = amr_wait_command(ac)) != 0) 497 break; 498 499 /* copy out data and set status */ 500 if (au->au_length != 0) 501 error = copyout(dp, au->au_buffer, au->au_length); 502 debug(2, "copyout %ld bytes from %p -> %p", au->au_length, dp, au->au_buffer); 503 if (dp != NULL) 504 debug(2, "%16d", (int)dp); 505 au->au_status = ac->ac_status; 506 break; 507 508 default: 509 debug(1, "unknown ioctl 0x%lx", cmd); 510 error = ENOIOCTL; 511 break; 512 } 513 514 if (dp != NULL) 515 free(dp, M_DEVBUF); 516 if (ap != NULL) 517 free(ap, M_DEVBUF); 518 if (ac != NULL) 519 amr_releasecmd(ac); 520 return(error); 521} 522 523/******************************************************************************** 524 ******************************************************************************** 525 Status Monitoring 526 ******************************************************************************** 527 ********************************************************************************/ 528 529/******************************************************************************** 530 * Perform a periodic check of the controller status 531 */ 532static void 533amr_periodic(void *data) 534{ 535 struct amr_softc *sc = (struct amr_softc *)data; 536 537 debug_called(2); 538 539 /* XXX perform periodic status checks here */ 540 541 /* compensate for missed interrupts */ 542 amr_done(sc); 543 544 /* reschedule */ 545 sc->amr_timeout = timeout(amr_periodic, sc, hz); 546} 547 548/******************************************************************************** 549 ******************************************************************************** 550 Command Wrappers 551 ******************************************************************************** 552 ********************************************************************************/ 553 554/******************************************************************************** 555 * Interrogate the controller for the operational parameters we require. 556 */ 557static int 558amr_query_controller(struct amr_softc *sc) 559{ 560 struct amr_enquiry3 *aex; 561 struct amr_prodinfo *ap; 562 struct amr_enquiry *ae; 563 int ldrv; 564 565 /* 566 * If we haven't found the real limit yet, let us have a couple of commands in 567 * order to be able to probe. 568 */ 569 if (sc->amr_maxio == 0) 570 sc->amr_maxio = 2; 571 572 /* 573 * Greater than 10 byte cdb support 574 */ 575 sc->support_ext_cdb = amr_support_ext_cdb(sc); 576 577 if(sc->support_ext_cdb) { 578 debug(2,"supports extended CDBs."); 579 } 580 581 /* 582 * Try to issue an ENQUIRY3 command 583 */ 584 if ((aex = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_ENQ3, 585 AMR_CONFIG_ENQ3_SOLICITED_FULL)) != NULL) { 586 587 /* 588 * Fetch current state of logical drives. 589 */ 590 for (ldrv = 0; ldrv < aex->ae_numldrives; ldrv++) { 591 sc->amr_drive[ldrv].al_size = aex->ae_drivesize[ldrv]; 592 sc->amr_drive[ldrv].al_state = aex->ae_drivestate[ldrv]; 593 sc->amr_drive[ldrv].al_properties = aex->ae_driveprop[ldrv]; 594 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 595 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 596 } 597 free(aex, M_DEVBUF); 598 599 /* 600 * Get product info for channel count. 601 */ 602 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) == NULL) { 603 device_printf(sc->amr_dev, "can't obtain product data from controller\n"); 604 return(1); 605 } 606 sc->amr_maxdrives = 40; 607 sc->amr_maxchan = ap->ap_nschan; 608 sc->amr_maxio = ap->ap_maxio; 609 sc->amr_type |= AMR_TYPE_40LD; 610 free(ap, M_DEVBUF); 611 612 } else { 613 614 /* failed, try the 8LD ENQUIRY commands */ 615 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) == NULL) { 616 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) == NULL) { 617 device_printf(sc->amr_dev, "can't obtain configuration data from controller\n"); 618 return(1); 619 } 620 ae->ae_signature = 0; 621 } 622 623 /* 624 * Fetch current state of logical drives. 625 */ 626 for (ldrv = 0; ldrv < ae->ae_ldrv.al_numdrives; ldrv++) { 627 sc->amr_drive[ldrv].al_size = ae->ae_ldrv.al_size[ldrv]; 628 sc->amr_drive[ldrv].al_state = ae->ae_ldrv.al_state[ldrv]; 629 sc->amr_drive[ldrv].al_properties = ae->ae_ldrv.al_properties[ldrv]; 630 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 631 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 632 } 633 634 sc->amr_maxdrives = 8; 635 sc->amr_maxchan = ae->ae_adapter.aa_channels; 636 sc->amr_maxio = ae->ae_adapter.aa_maxio; 637 free(ae, M_DEVBUF); 638 } 639 640 /* 641 * Mark remaining drives as unused. 642 */ 643 for (; ldrv < AMR_MAXLD; ldrv++) 644 sc->amr_drive[ldrv].al_size = 0xffffffff; 645 646 /* 647 * Cap the maximum number of outstanding I/Os. AMI's Linux driver doesn't trust 648 * the controller's reported value, and lockups have been seen when we do. 649 */ 650 sc->amr_maxio = imin(sc->amr_maxio, AMR_LIMITCMD); 651 652 return(0); 653} 654 655/******************************************************************************** 656 * Run a generic enquiry-style command. 657 */ 658static void * 659amr_enquiry(struct amr_softc *sc, size_t bufsize, u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual) 660{ 661 struct amr_command *ac; 662 void *result; 663 u_int8_t *mbox; 664 int error; 665 666 debug_called(1); 667 668 error = 1; 669 result = NULL; 670 671 /* get ourselves a command buffer */ 672 if ((ac = amr_alloccmd(sc)) == NULL) 673 goto out; 674 /* allocate the response structure */ 675 if ((result = malloc(bufsize, M_DEVBUF, M_NOWAIT)) == NULL) 676 goto out; 677 /* set command flags */ 678 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 679 680 /* point the command at our data */ 681 ac->ac_data = result; 682 ac->ac_length = bufsize; 683 684 /* build the command proper */ 685 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 686 mbox[0] = cmd; 687 mbox[2] = cmdsub; 688 mbox[3] = cmdqual; 689 690 /* can't assume that interrupts are going to work here, so play it safe */ 691 if (sc->amr_poll_command(ac)) 692 goto out; 693 error = ac->ac_status; 694 695 out: 696 if (ac != NULL) 697 amr_releasecmd(ac); 698 if ((error != 0) && (result != NULL)) { 699 free(result, M_DEVBUF); 700 result = NULL; 701 } 702 return(result); 703} 704 705/******************************************************************************** 706 * Flush the controller's internal cache, return status. 707 */ 708int 709amr_flush(struct amr_softc *sc) 710{ 711 struct amr_command *ac; 712 int error; 713 714 /* get ourselves a command buffer */ 715 error = 1; 716 if ((ac = amr_alloccmd(sc)) == NULL) 717 goto out; 718 /* set command flags */ 719 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 720 721 /* build the command proper */ 722 ac->ac_mailbox.mb_command = AMR_CMD_FLUSH; 723 724 /* we have to poll, as the system may be going down or otherwise damaged */ 725 if (sc->amr_poll_command(ac)) 726 goto out; 727 error = ac->ac_status; 728 729 out: 730 if (ac != NULL) 731 amr_releasecmd(ac); 732 return(error); 733} 734 735/******************************************************************************** 736 * Detect extented cdb >> greater than 10 byte cdb support 737 * returns '1' means this support exist 738 * returns '0' means this support doesn't exist 739 */ 740static int 741amr_support_ext_cdb(struct amr_softc *sc) 742{ 743 struct amr_command *ac; 744 u_int8_t *mbox; 745 int error; 746 747 /* get ourselves a command buffer */ 748 error = 0; 749 if ((ac = amr_alloccmd(sc)) == NULL) 750 goto out; 751 /* set command flags */ 752 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 753 754 /* build the command proper */ 755 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 756 mbox[0] = 0xA4; 757 mbox[2] = 0x16; 758 759 760 /* we have to poll, as the system may be going down or otherwise damaged */ 761 if (sc->amr_poll_command(ac)) 762 goto out; 763 if( ac->ac_status == AMR_STATUS_SUCCESS ) { 764 error = 1; 765 } 766 767out: 768 if (ac != NULL) 769 amr_releasecmd(ac); 770 return(error); 771} 772 773/******************************************************************************** 774 * Try to find I/O work for the controller from one or more of the work queues. 775 * 776 * We make the assumption that if the controller is not ready to take a command 777 * at some given time, it will generate an interrupt at some later time when 778 * it is. 779 */ 780void 781amr_startio(struct amr_softc *sc) 782{ 783 struct amr_command *ac; 784 785 /* spin until something prevents us from doing any work */ 786 for (;;) { 787 788 /* try to get a ready command */ 789 ac = amr_dequeue_ready(sc); 790 791 /* if that failed, build a command from a bio */ 792 if (ac == NULL) 793 (void)amr_bio_command(sc, &ac); 794 795 /* if that failed, build a command from a ccb */ 796 if (ac == NULL) 797 (void)amr_cam_command(sc, &ac); 798 799 /* if we don't have anything to do, give up */ 800 if (ac == NULL) 801 break; 802 803 /* try to give the command to the controller; if this fails save it for later and give up */ 804 if (amr_start(ac)) { 805 debug(2, "controller busy, command deferred"); 806 amr_requeue_ready(ac); /* XXX schedule retry very soon? */ 807 break; 808 } 809 } 810} 811 812/******************************************************************************** 813 * Handle completion of an I/O command. 814 */ 815static void 816amr_completeio(struct amr_command *ac) 817{ 818 struct amr_softc *sc = ac->ac_sc; 819 820 if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */ 821 ac->ac_bio->bio_error = EIO; 822 ac->ac_bio->bio_flags |= BIO_ERROR; 823 824 device_printf(sc->amr_dev, "I/O error - 0x%x\n", ac->ac_status); 825/* amr_printcommand(ac);*/ 826 } 827 amrd_intr(ac->ac_bio); 828 amr_releasecmd(ac); 829} 830 831/******************************************************************************** 832 ******************************************************************************** 833 Command Processing 834 ******************************************************************************** 835 ********************************************************************************/ 836 837/******************************************************************************** 838 * Convert a bio off the top of the bio queue into a command. 839 */ 840static int 841amr_bio_command(struct amr_softc *sc, struct amr_command **acp) 842{ 843 struct amr_command *ac; 844 struct amrd_softc *amrd; 845 struct bio *bio; 846 int error; 847 int blkcount; 848 int driveno; 849 int cmd; 850 851 ac = NULL; 852 error = 0; 853 854 /* get a bio to work on */ 855 if ((bio = amr_dequeue_bio(sc)) == NULL) 856 goto out; 857 858 /* get a command */ 859 if ((ac = amr_alloccmd(sc)) == NULL) { 860 error = ENOMEM; 861 goto out; 862 } 863 864 /* connect the bio to the command */ 865 ac->ac_complete = amr_completeio; 866 ac->ac_bio = bio; 867 ac->ac_data = bio->bio_data; 868 ac->ac_length = bio->bio_bcount; 869 if (BIO_IS_READ(bio)) { 870 ac->ac_flags |= AMR_CMD_DATAIN; 871 cmd = AMR_CMD_LREAD; 872 } else { 873 ac->ac_flags |= AMR_CMD_DATAOUT; 874 cmd = AMR_CMD_LWRITE; 875 } 876 amrd = (struct amrd_softc *)bio->bio_disk->d_drv1; 877 driveno = amrd->amrd_drive - sc->amr_drive; 878 blkcount = (bio->bio_bcount + AMR_BLKSIZE - 1) / AMR_BLKSIZE; 879 880 ac->ac_mailbox.mb_command = cmd; 881 ac->ac_mailbox.mb_blkcount = blkcount; 882 ac->ac_mailbox.mb_lba = bio->bio_pblkno; 883 ac->ac_mailbox.mb_drive = driveno; 884 /* we fill in the s/g related data when the command is mapped */ 885 886 if ((bio->bio_pblkno + blkcount) > sc->amr_drive[driveno].al_size) 887 device_printf(sc->amr_dev, "I/O beyond end of unit (%lld,%d > %lu)\n", 888 (long long)bio->bio_pblkno, blkcount, 889 (u_long)sc->amr_drive[driveno].al_size); 890 891out: 892 if (error != 0) { 893 if (ac != NULL) 894 amr_releasecmd(ac); 895 if (bio != NULL) /* this breaks ordering... */ 896 amr_enqueue_bio(sc, bio); 897 } 898 *acp = ac; 899 return(error); 900} 901 902/******************************************************************************** 903 * Take a command, submit it to the controller and sleep until it completes 904 * or fails. Interrupts must be enabled, returns nonzero on error. 905 */ 906static int 907amr_wait_command(struct amr_command *ac) 908{ 909 int error, count; 910 911 debug_called(1); 912 913 ac->ac_complete = NULL; 914 ac->ac_flags |= AMR_CMD_SLEEP; 915 if ((error = amr_start(ac)) != 0) 916 return(error); 917 918 count = 0; 919 /* XXX better timeout? */ 920 while ((ac->ac_flags & AMR_CMD_BUSY) && (count < 30)) { 921 tsleep(ac, PRIBIO | PCATCH, "amrwcmd", hz); 922 } 923 return(0); 924} 925 926/******************************************************************************** 927 * Take a command, submit it to the controller and busy-wait for it to return. 928 * Returns nonzero on error. Can be safely called with interrupts enabled. 929 */ 930static int 931amr_std_poll_command(struct amr_command *ac) 932{ 933 struct amr_softc *sc = ac->ac_sc; 934 int error, count; 935 936 debug_called(2); 937 938 ac->ac_complete = NULL; 939 if ((error = amr_start(ac)) != 0) 940 return(error); 941 942 count = 0; 943 do { 944 /* 945 * Poll for completion, although the interrupt handler may beat us to it. 946 * Note that the timeout here is somewhat arbitrary. 947 */ 948 amr_done(sc); 949 DELAY(1000); 950 } while ((ac->ac_flags & AMR_CMD_BUSY) && (count++ < 1000)); 951 if (!(ac->ac_flags & AMR_CMD_BUSY)) { 952 error = 0; 953 } else { 954 /* XXX the slot is now marked permanently busy */ 955 error = EIO; 956 device_printf(sc->amr_dev, "polled command timeout\n"); 957 } 958 return(error); 959} 960 961/******************************************************************************** 962 * Take a command, submit it to the controller and busy-wait for it to return. 963 * Returns nonzero on error. Can be safely called with interrupts enabled. 964 */ 965static int 966amr_quartz_poll_command(struct amr_command *ac) 967{ 968 struct amr_softc *sc = ac->ac_sc; 969 int s; 970 int error,count; 971 972 debug_called(2); 973 974 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 975 amr_mapcmd(ac); 976 977 s = splbio(); 978 979 if (sc->amr_state & AMR_STATE_INTEN) { 980 count=0; 981 while (sc->amr_busyslots) { 982 tsleep(sc, PRIBIO | PCATCH, "amrpoll", hz); 983 if(count++>10) { 984 break; 985 } 986 } 987 988 if(sc->amr_busyslots) { 989 device_printf(sc->amr_dev, "adapter is busy\n"); 990 splx(s); 991 amr_unmapcmd(ac); 992 ac->ac_status=0; 993 return(1); 994 } 995 } 996 997 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 998 999 /* clear the poll/ack fields in the mailbox */ 1000 sc->amr_mailbox->mb_ident = 0xFE; 1001 sc->amr_mailbox->mb_nstatus = 0xFF; 1002 sc->amr_mailbox->mb_status = 0xFF; 1003 sc->amr_mailbox->mb_poll = 0; 1004 sc->amr_mailbox->mb_ack = 0; 1005 sc->amr_mailbox->mb_busy = 1; 1006 1007 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1008 1009 while(sc->amr_mailbox->mb_nstatus == 0xFF); 1010 while(sc->amr_mailbox->mb_status == 0xFF); 1011 ac->ac_status=sc->amr_mailbox->mb_status; 1012 error = (ac->ac_status !=AMR_STATUS_SUCCESS) ? 1:0; 1013 while(sc->amr_mailbox->mb_poll != 0x77); 1014 sc->amr_mailbox->mb_poll = 0; 1015 sc->amr_mailbox->mb_ack = 0x77; 1016 1017 /* acknowledge that we have the commands */ 1018 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1019 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK); 1020 1021 splx(s); 1022 1023 /* unmap the command's data buffer */ 1024 amr_unmapcmd(ac); 1025 1026 return(error); 1027} 1028 1029/******************************************************************************** 1030 * Get a free command slot for a command if it doesn't already have one. 1031 * 1032 * May be safely called multiple times for a given command. 1033 */ 1034static int 1035amr_getslot(struct amr_command *ac) 1036{ 1037 struct amr_softc *sc = ac->ac_sc; 1038 int s, slot, limit, error; 1039 1040 debug_called(3); 1041 1042 /* if the command already has a slot, don't try to give it another one */ 1043 if (ac->ac_slot != 0) 1044 return(0); 1045 1046 /* enforce slot usage limit */ 1047 limit = (ac->ac_flags & AMR_CMD_PRIORITY) ? sc->amr_maxio : sc->amr_maxio - 4; 1048 if (sc->amr_busyslots > limit) 1049 return(EBUSY); 1050 1051 /* 1052 * Allocate a slot. XXX linear scan is slow 1053 */ 1054 error = EBUSY; 1055 s = splbio(); 1056 for (slot = 0; slot < sc->amr_maxio; slot++) { 1057 if (sc->amr_busycmd[slot] == NULL) { 1058 sc->amr_busycmd[slot] = ac; 1059 sc->amr_busyslots++; 1060 ac->ac_slot = slot; 1061 error = 0; 1062 break; 1063 } 1064 } 1065 splx(s); 1066 1067 return(error); 1068} 1069 1070/******************************************************************************** 1071 * Map/unmap (ac)'s data in the controller's addressable space as required. 1072 * 1073 * These functions may be safely called multiple times on a given command. 1074 */ 1075static void 1076amr_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1077{ 1078 struct amr_command *ac = (struct amr_command *)arg; 1079 struct amr_softc *sc = ac->ac_sc; 1080 struct amr_sgentry *sg; 1081 int i; 1082 u_int8_t *sgc; 1083 1084 debug_called(3); 1085 1086 /* get base address of s/g table */ 1087 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1088 1089 /* save data physical address */ 1090 ac->ac_dataphys = segs[0].ds_addr; 1091 1092 /* for AMR_CMD_CONFIG the s/g count goes elsewhere */ 1093 if (ac->ac_mailbox.mb_command == AMR_CMD_CONFIG) { 1094 sgc = &(((struct amr_mailbox_ioctl *)&ac->ac_mailbox)->mb_param); 1095 } else { 1096 sgc = &ac->ac_mailbox.mb_nsgelem; 1097 } 1098 1099 /* decide whether we need to populate the s/g table */ 1100 if (nsegments < 2) { 1101 *sgc = 0; 1102 ac->ac_mailbox.mb_nsgelem = 0; 1103 ac->ac_mailbox.mb_physaddr = ac->ac_dataphys; 1104 } else { 1105 ac->ac_mailbox.mb_nsgelem = nsegments; 1106 *sgc = nsegments; 1107 ac->ac_mailbox.mb_physaddr = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1108 for (i = 0; i < nsegments; i++, sg++) { 1109 sg->sg_addr = segs[i].ds_addr; 1110 sg->sg_count = segs[i].ds_len; 1111 } 1112 } 1113} 1114 1115static void 1116amr_setup_ccbmap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1117{ 1118 struct amr_command *ac = (struct amr_command *)arg; 1119 struct amr_softc *sc = ac->ac_sc; 1120 struct amr_sgentry *sg; 1121 struct amr_passthrough *ap = (struct amr_passthrough *)ac->ac_data; 1122 struct amr_ext_passthrough *aep = (struct amr_ext_passthrough *)ac->ac_data; 1123 int i; 1124 1125 /* get base address of s/g table */ 1126 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1127 1128 /* decide whether we need to populate the s/g table */ 1129 if( ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS ) { 1130 if (nsegments < 2) { 1131 aep->ap_no_sg_elements = 0; 1132 aep->ap_data_transfer_address = segs[0].ds_addr; 1133 } else { 1134 /* save s/g table information in passthrough */ 1135 aep->ap_no_sg_elements = nsegments; 1136 aep->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1137 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1138 for (i = 0; i < nsegments; i++, sg++) { 1139 sg->sg_addr = segs[i].ds_addr; 1140 sg->sg_count = segs[i].ds_len; 1141 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1142 } 1143 } 1144 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1145 aep->ap_no_sg_elements, aep->ap_data_transfer_address, ac->ac_dataphys); 1146 } else { 1147 if (nsegments < 2) { 1148 ap->ap_no_sg_elements = 0; 1149 ap->ap_data_transfer_address = segs[0].ds_addr; 1150 } else { 1151 /* save s/g table information in passthrough */ 1152 ap->ap_no_sg_elements = nsegments; 1153 ap->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1154 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1155 for (i = 0; i < nsegments; i++, sg++) { 1156 sg->sg_addr = segs[i].ds_addr; 1157 sg->sg_count = segs[i].ds_len; 1158 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1159 } 1160 } 1161 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1162 ap->ap_no_sg_elements, ap->ap_data_transfer_address, ac->ac_dataphys); 1163 } 1164} 1165 1166static void 1167amr_mapcmd(struct amr_command *ac) 1168{ 1169 struct amr_softc *sc = ac->ac_sc; 1170 1171 debug_called(3); 1172 1173 /* if the command involves data at all, and hasn't been mapped */ 1174 if (!(ac->ac_flags & AMR_CMD_MAPPED)) { 1175 1176 if (ac->ac_data != NULL) { 1177 /* map the data buffers into bus space and build the s/g list */ 1178 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_dmamap, ac->ac_data, ac->ac_length, 1179 amr_setup_dmamap, ac, 0); 1180 if (ac->ac_flags & AMR_CMD_DATAIN) 1181 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREREAD); 1182 if (ac->ac_flags & AMR_CMD_DATAOUT) 1183 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREWRITE); 1184 } 1185 1186 if (ac->ac_ccb_data != NULL) { 1187 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, ac->ac_ccb_data, ac->ac_ccb_length, 1188 amr_setup_ccbmap, ac, 0); 1189 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1190 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREREAD); 1191 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1192 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREWRITE); 1193 } 1194 ac->ac_flags |= AMR_CMD_MAPPED; 1195 } 1196} 1197 1198static void 1199amr_unmapcmd(struct amr_command *ac) 1200{ 1201 struct amr_softc *sc = ac->ac_sc; 1202 1203 debug_called(3); 1204 1205 /* if the command involved data at all and was mapped */ 1206 if (ac->ac_flags & AMR_CMD_MAPPED) { 1207 1208 if (ac->ac_data != NULL) { 1209 if (ac->ac_flags & AMR_CMD_DATAIN) 1210 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTREAD); 1211 if (ac->ac_flags & AMR_CMD_DATAOUT) 1212 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE); 1213 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap); 1214 } 1215 1216 if (ac->ac_ccb_data != NULL) { 1217 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1218 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTREAD); 1219 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1220 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTWRITE); 1221 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_ccb_dmamap); 1222 } 1223 ac->ac_flags &= ~AMR_CMD_MAPPED; 1224 } 1225} 1226 1227/******************************************************************************** 1228 * Take a command and give it to the controller, returns 0 if successful, or 1229 * EBUSY if the command should be retried later. 1230 */ 1231static int 1232amr_start(struct amr_command *ac) 1233{ 1234 struct amr_softc *sc = ac->ac_sc; 1235 int done, s, i; 1236 1237 debug_called(3); 1238 1239 /* mark command as busy so that polling consumer can tell */ 1240 ac->ac_flags |= AMR_CMD_BUSY; 1241 1242 /* get a command slot (freed in amr_done) */ 1243 if (amr_getslot(ac)) 1244 return(EBUSY); 1245 1246 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 1247 amr_mapcmd(ac); 1248 1249 /* mark the new mailbox we are going to copy in as busy */ 1250 ac->ac_mailbox.mb_busy = 1; 1251 1252 /* clear the poll/ack fields in the mailbox */ 1253 sc->amr_mailbox->mb_poll = 0; 1254 sc->amr_mailbox->mb_ack = 0; 1255 1256 /* 1257 * Save the slot number so that we can locate this command when complete. 1258 * Note that ident = 0 seems to be special, so we don't use it. 1259 */ 1260 ac->ac_mailbox.mb_ident = ac->ac_slot + 1; 1261 1262 /* 1263 * Spin waiting for the mailbox, give up after ~1 second. We expect the 1264 * controller to be able to handle our I/O. 1265 * 1266 * XXX perhaps we should wait for less time, and count on the deferred command 1267 * handling to deal with retries? 1268 */ 1269 debug(4, "wait for mailbox"); 1270 for (i = 10000, done = 0; (i > 0) && !done; i--) { 1271 s = splbio(); 1272 1273 /* is the mailbox free? */ 1274 if (sc->amr_mailbox->mb_busy == 0) { 1275 debug(4, "got mailbox"); 1276 sc->amr_mailbox64->mb64_segment = 0; 1277 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 1278 done = 1; 1279 1280 /* not free, spin waiting */ 1281 } else { 1282 debug(4, "busy flag %x\n", sc->amr_mailbox->mb_busy); 1283 /* this is somewhat ugly */ 1284 DELAY(100); 1285 } 1286 splx(s); /* drop spl to allow completion interrupts */ 1287 } 1288 1289 /* 1290 * Now give the command to the controller 1291 */ 1292 if (done) { 1293 if (sc->amr_submit_command(sc)) { 1294 /* the controller wasn't ready to take the command, forget that we tried to post it */ 1295 sc->amr_mailbox->mb_busy = 0; 1296 return(EBUSY); 1297 } 1298 debug(3, "posted command"); 1299 return(0); 1300 } 1301 1302 /* 1303 * The controller wouldn't take the command. Return the command as busy 1304 * so that it is retried later. 1305 */ 1306 return(EBUSY); 1307} 1308 1309/******************************************************************************** 1310 * Extract one or more completed commands from the controller (sc) 1311 * 1312 * Returns nonzero if any commands on the work queue were marked as completed. 1313 */ 1314int 1315amr_done(struct amr_softc *sc) 1316{ 1317 struct amr_command *ac; 1318 struct amr_mailbox mbox; 1319 int i, idx, result; 1320 1321 debug_called(3); 1322 1323 /* See if there's anything for us to do */ 1324 result = 0; 1325 1326 /* loop collecting completed commands */ 1327 for (;;) { 1328 /* poll for a completed command's identifier and status */ 1329 if (sc->amr_get_work(sc, &mbox)) { 1330 result = 1; 1331 1332 /* iterate over completed commands in this result */ 1333 for (i = 0; i < mbox.mb_nstatus; i++) { 1334 /* get pointer to busy command */ 1335 idx = mbox.mb_completed[i] - 1; 1336 ac = sc->amr_busycmd[idx]; 1337 1338 /* really a busy command? */ 1339 if (ac != NULL) { 1340 1341 /* pull the command from the busy index */ 1342 sc->amr_busycmd[idx] = NULL; 1343 sc->amr_busyslots--; 1344 1345 /* save status for later use */ 1346 ac->ac_status = mbox.mb_status; 1347 amr_enqueue_completed(ac); 1348 debug(3, "completed command with status %x", mbox.mb_status); 1349 } else { 1350 device_printf(sc->amr_dev, "bad slot %d completed\n", idx); 1351 } 1352 } 1353 } else { 1354 break; /* no work */ 1355 } 1356 } 1357 1358 /* if we've completed any commands, try posting some more */ 1359 if (result) 1360 amr_startio(sc); 1361 1362 /* handle completion and timeouts */ 1363#if __FreeBSD_version >= 500005 1364 if (sc->amr_state & AMR_STATE_INTEN) 1365 taskqueue_enqueue(taskqueue_swi_giant, &sc->amr_task_complete); 1366 else 1367#endif 1368 amr_complete(sc, 0); 1369 1370 return(result); 1371} 1372 1373/******************************************************************************** 1374 * Do completion processing on done commands on (sc) 1375 */ 1376static void 1377amr_complete(void *context, int pending) 1378{ 1379 struct amr_softc *sc = (struct amr_softc *)context; 1380 struct amr_command *ac; 1381 1382 debug_called(3); 1383 1384 /* pull completed commands off the queue */ 1385 for (;;) { 1386 ac = amr_dequeue_completed(sc); 1387 if (ac == NULL) 1388 break; 1389 1390 /* unmap the command's data buffer */ 1391 amr_unmapcmd(ac); 1392 1393 /* unbusy the command */ 1394 ac->ac_flags &= ~AMR_CMD_BUSY; 1395 1396 /* 1397 * Is there a completion handler? 1398 */ 1399 if (ac->ac_complete != NULL) { 1400 ac->ac_complete(ac); 1401 1402 /* 1403 * Is someone sleeping on this one? 1404 */ 1405 } else if (ac->ac_flags & AMR_CMD_SLEEP) { 1406 wakeup(ac); 1407 } 1408 1409 if(!sc->amr_busyslots) { 1410 wakeup(sc); 1411 } 1412 } 1413} 1414 1415/******************************************************************************** 1416 ******************************************************************************** 1417 Command Buffer Management 1418 ******************************************************************************** 1419 ********************************************************************************/ 1420 1421/******************************************************************************** 1422 * Get a new command buffer. 1423 * 1424 * This may return NULL in low-memory cases. 1425 * 1426 * If possible, we recycle a command buffer that's been used before. 1427 */ 1428struct amr_command * 1429amr_alloccmd(struct amr_softc *sc) 1430{ 1431 struct amr_command *ac; 1432 1433 debug_called(3); 1434 1435 ac = amr_dequeue_free(sc); 1436 if (ac == NULL) { 1437 amr_alloccmd_cluster(sc); 1438 ac = amr_dequeue_free(sc); 1439 } 1440 if (ac == NULL) 1441 return(NULL); 1442 1443 /* clear out significant fields */ 1444 ac->ac_slot = 0; 1445 ac->ac_status = 0; 1446 bzero(&ac->ac_mailbox, sizeof(struct amr_mailbox)); 1447 ac->ac_flags = 0; 1448 ac->ac_bio = NULL; 1449 ac->ac_data = NULL; 1450 ac->ac_ccb_data = NULL; 1451 ac->ac_complete = NULL; 1452 return(ac); 1453} 1454 1455/******************************************************************************** 1456 * Release a command buffer for recycling. 1457 */ 1458void 1459amr_releasecmd(struct amr_command *ac) 1460{ 1461 debug_called(3); 1462 1463 amr_enqueue_free(ac); 1464} 1465 1466/******************************************************************************** 1467 * Allocate a new command cluster and initialise it. 1468 */ 1469static void 1470amr_alloccmd_cluster(struct amr_softc *sc) 1471{ 1472 struct amr_command_cluster *acc; 1473 struct amr_command *ac; 1474 int s, i; 1475 1476 acc = malloc(AMR_CMD_CLUSTERSIZE, M_DEVBUF, M_NOWAIT); 1477 if (acc != NULL) { 1478 s = splbio(); 1479 TAILQ_INSERT_TAIL(&sc->amr_cmd_clusters, acc, acc_link); 1480 splx(s); 1481 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) { 1482 ac = &acc->acc_command[i]; 1483 bzero(ac, sizeof(*ac)); 1484 ac->ac_sc = sc; 1485 if (!bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_dmamap) && 1486 !bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_ccb_dmamap)) 1487 amr_releasecmd(ac); 1488 } 1489 } 1490} 1491 1492/******************************************************************************** 1493 * Free a command cluster 1494 */ 1495static void 1496amr_freecmd_cluster(struct amr_command_cluster *acc) 1497{ 1498 struct amr_softc *sc = acc->acc_command[0].ac_sc; 1499 int i; 1500 1501 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) 1502 bus_dmamap_destroy(sc->amr_buffer_dmat, acc->acc_command[i].ac_dmamap); 1503 free(acc, M_DEVBUF); 1504} 1505 1506/******************************************************************************** 1507 ******************************************************************************** 1508 Interface-specific Shims 1509 ******************************************************************************** 1510 ********************************************************************************/ 1511 1512/******************************************************************************** 1513 * Tell the controller that the mailbox contains a valid command 1514 */ 1515static int 1516amr_quartz_submit_command(struct amr_softc *sc) 1517{ 1518 debug_called(3); 1519 1520 if (AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT) 1521 return(EBUSY); 1522 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1523 return(0); 1524} 1525 1526static int 1527amr_std_submit_command(struct amr_softc *sc) 1528{ 1529 debug_called(3); 1530 1531 if (AMR_SGET_MBSTAT(sc) & AMR_SMBOX_BUSYFLAG) 1532 return(EBUSY); 1533 AMR_SPOST_COMMAND(sc); 1534 return(0); 1535} 1536 1537/******************************************************************************** 1538 * Claim any work that the controller has completed; acknowledge completion, 1539 * save details of the completion in (mbsave) 1540 */ 1541static int 1542amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1543{ 1544 int s, worked; 1545 u_int32_t outd; 1546 1547 debug_called(3); 1548 1549 worked = 0; 1550 s = splbio(); 1551 1552 /* work waiting for us? */ 1553 if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) { 1554 1555 /* save mailbox, which contains a list of completed commands */ 1556 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1557 1558 /* acknowledge interrupt */ 1559 AMR_QPUT_ODB(sc, AMR_QODB_READY); 1560 1561 /* acknowledge that we have the commands */ 1562 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1563 1564#ifndef AMR_QUARTZ_GOFASTER 1565 /* 1566 * This waits for the controller to notice that we've taken the 1567 * command from it. It's very inefficient, and we shouldn't do it, 1568 * but if we remove this code, we stop completing commands under 1569 * load. 1570 * 1571 * Peter J says we shouldn't do this. The documentation says we 1572 * should. Who is right? 1573 */ 1574 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK) 1575 ; /* XXX aiee! what if it dies? */ 1576#endif 1577 1578 worked = 1; /* got some work */ 1579 } 1580 1581 splx(s); 1582 return(worked); 1583} 1584 1585static int 1586amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1587{ 1588 int s, worked; 1589 u_int8_t istat; 1590 1591 debug_called(3); 1592 1593 worked = 0; 1594 s = splbio(); 1595 1596 /* check for valid interrupt status */ 1597 istat = AMR_SGET_ISTAT(sc); 1598 if ((istat & AMR_SINTR_VALID) != 0) { 1599 AMR_SPUT_ISTAT(sc, istat); /* ack interrupt status */ 1600 1601 /* save mailbox, which contains a list of completed commands */ 1602 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1603 1604 AMR_SACK_INTERRUPT(sc); /* acknowledge we have the mailbox */ 1605 worked = 1; 1606 } 1607 1608 splx(s); 1609 return(worked); 1610} 1611 1612/******************************************************************************** 1613 * Notify the controller of the mailbox location. 1614 */ 1615static void 1616amr_std_attach_mailbox(struct amr_softc *sc) 1617{ 1618 1619 /* program the mailbox physical address */ 1620 AMR_SBYTE_SET(sc, AMR_SMBOX_0, sc->amr_mailboxphys & 0xff); 1621 AMR_SBYTE_SET(sc, AMR_SMBOX_1, (sc->amr_mailboxphys >> 8) & 0xff); 1622 AMR_SBYTE_SET(sc, AMR_SMBOX_2, (sc->amr_mailboxphys >> 16) & 0xff); 1623 AMR_SBYTE_SET(sc, AMR_SMBOX_3, (sc->amr_mailboxphys >> 24) & 0xff); 1624 AMR_SBYTE_SET(sc, AMR_SMBOX_ENABLE, AMR_SMBOX_ADDR); 1625 1626 /* clear any outstanding interrupt and enable interrupts proper */ 1627 AMR_SACK_INTERRUPT(sc); 1628 AMR_SENABLE_INTR(sc); 1629} 1630 1631#ifdef AMR_BOARD_INIT 1632/******************************************************************************** 1633 * Initialise the controller 1634 */ 1635static int 1636amr_quartz_init(struct amr_softc *sc) 1637{ 1638 int status, ostatus; 1639 1640 device_printf(sc->amr_dev, "initial init status %x\n", AMR_QGET_INITSTATUS(sc)); 1641 1642 AMR_QRESET(sc); 1643 1644 ostatus = 0xff; 1645 while ((status = AMR_QGET_INITSTATUS(sc)) != AMR_QINIT_DONE) { 1646 if (status != ostatus) { 1647 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_qinit, status)); 1648 ostatus = status; 1649 } 1650 switch (status) { 1651 case AMR_QINIT_NOMEM: 1652 return(ENOMEM); 1653 1654 case AMR_QINIT_SCAN: 1655 /* XXX we could print channel/target here */ 1656 break; 1657 } 1658 } 1659 return(0); 1660} 1661 1662static int 1663amr_std_init(struct amr_softc *sc) 1664{ 1665 int status, ostatus; 1666 1667 device_printf(sc->amr_dev, "initial init status %x\n", AMR_SGET_INITSTATUS(sc)); 1668 1669 AMR_SRESET(sc); 1670 1671 ostatus = 0xff; 1672 while ((status = AMR_SGET_INITSTATUS(sc)) != AMR_SINIT_DONE) { 1673 if (status != ostatus) { 1674 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_sinit, status)); 1675 ostatus = status; 1676 } 1677 switch (status) { 1678 case AMR_SINIT_NOMEM: 1679 return(ENOMEM); 1680 1681 case AMR_SINIT_INPROG: 1682 /* XXX we could print channel/target here? */ 1683 break; 1684 } 1685 } 1686 return(0); 1687} 1688#endif 1689 1690/******************************************************************************** 1691 ******************************************************************************** 1692 Debugging 1693 ******************************************************************************** 1694 ********************************************************************************/ 1695 1696/******************************************************************************** 1697 * Identify the controller and print some information about it. 1698 */ 1699static void 1700amr_describe_controller(struct amr_softc *sc) 1701{ 1702 struct amr_prodinfo *ap; 1703 struct amr_enquiry *ae; 1704 char *prod; 1705 1706 /* 1707 * Try to get 40LD product info, which tells us what the card is labelled as. 1708 */ 1709 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) != NULL) { 1710 device_printf(sc->amr_dev, "<LSILogic %.80s> Firmware %.16s, BIOS %.16s, %dMB RAM\n", 1711 ap->ap_product, ap->ap_firmware, ap->ap_bios, 1712 ap->ap_memsize); 1713 1714 free(ap, M_DEVBUF); 1715 return; 1716 } 1717 1718 /* 1719 * Try 8LD extended ENQUIRY to get controller signature, and use lookup table. 1720 */ 1721 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) != NULL) { 1722 prod = amr_describe_code(amr_table_adaptertype, ae->ae_signature); 1723 1724 } else if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) != NULL) { 1725 1726 /* 1727 * Try to work it out based on the PCI signatures. 1728 */ 1729 switch (pci_get_device(sc->amr_dev)) { 1730 case 0x9010: 1731 prod = "Series 428"; 1732 break; 1733 case 0x9060: 1734 prod = "Series 434"; 1735 break; 1736 default: 1737 prod = "unknown controller"; 1738 break; 1739 } 1740 } else { 1741 prod = "unsupported controller"; 1742 } 1743 1744 /* 1745 * HP NetRaid controllers have a special encoding of the firmware and 1746 * BIOS versions. The AMI version seems to have it as strings whereas 1747 * the HP version does it with a leading uppercase character and two 1748 * binary numbers. 1749 */ 1750 1751 if(ae->ae_adapter.aa_firmware[2] >= 'A' && 1752 ae->ae_adapter.aa_firmware[2] <= 'Z' && 1753 ae->ae_adapter.aa_firmware[1] < ' ' && 1754 ae->ae_adapter.aa_firmware[0] < ' ' && 1755 ae->ae_adapter.aa_bios[2] >= 'A' && 1756 ae->ae_adapter.aa_bios[2] <= 'Z' && 1757 ae->ae_adapter.aa_bios[1] < ' ' && 1758 ae->ae_adapter.aa_bios[0] < ' ') { 1759 1760 /* this looks like we have an HP NetRaid version of the MegaRaid */ 1761 1762 if(ae->ae_signature == AMR_SIG_438) { 1763 /* the AMI 438 is a NetRaid 3si in HP-land */ 1764 prod = "HP NetRaid 3si"; 1765 } 1766 1767 device_printf(sc->amr_dev, "<%s> Firmware %c.%02d.%02d, BIOS %c.%02d.%02d, %dMB RAM\n", 1768 prod, ae->ae_adapter.aa_firmware[2], 1769 ae->ae_adapter.aa_firmware[1], 1770 ae->ae_adapter.aa_firmware[0], 1771 ae->ae_adapter.aa_bios[2], 1772 ae->ae_adapter.aa_bios[1], 1773 ae->ae_adapter.aa_bios[0], 1774 ae->ae_adapter.aa_memorysize); 1775 } else { 1776 device_printf(sc->amr_dev, "<%s> Firmware %.4s, BIOS %.4s, %dMB RAM\n", 1777 prod, ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios, 1778 ae->ae_adapter.aa_memorysize); 1779 } 1780 free(ae, M_DEVBUF); 1781} 1782 1783int 1784amr_dump_blocks(struct amr_softc *sc, int unit, u_int32_t lba, void *data, int blks) 1785{ 1786 struct amr_command *ac; 1787 int error = EIO; 1788 1789 debug_called(1); 1790 1791 sc->amr_state &= ~AMR_STATE_INTEN; 1792 1793 /* get ourselves a command buffer */ 1794 if ((ac = amr_alloccmd(sc)) == NULL) 1795 goto out; 1796 /* set command flags */ 1797 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 1798 1799 /* point the command at our data */ 1800 ac->ac_data = data; 1801 ac->ac_length = blks * AMR_BLKSIZE; 1802 1803 /* build the command proper */ 1804 ac->ac_mailbox.mb_command = AMR_CMD_LWRITE; 1805 ac->ac_mailbox.mb_blkcount = blks; 1806 ac->ac_mailbox.mb_lba = lba; 1807 ac->ac_mailbox.mb_drive = unit; 1808 1809 /* can't assume that interrupts are going to work here, so play it safe */ 1810 if (sc->amr_poll_command(ac)) 1811 goto out; 1812 error = ac->ac_status; 1813 1814 out: 1815 if (ac != NULL) 1816 amr_releasecmd(ac); 1817 1818 sc->amr_state |= AMR_STATE_INTEN; 1819 return (error); 1820} 1821 1822 1823 1824#ifdef AMR_DEBUG 1825/******************************************************************************** 1826 * Print the command (ac) in human-readable format 1827 */ 1828#if 0 1829static void 1830amr_printcommand(struct amr_command *ac) 1831{ 1832 struct amr_softc *sc = ac->ac_sc; 1833 struct amr_sgentry *sg; 1834 int i; 1835 1836 device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n", 1837 ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive); 1838 device_printf(sc->amr_dev, "blkcount %d lba %d\n", 1839 ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba); 1840 device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length); 1841 device_printf(sc->amr_dev, "sg physaddr %08x nsg %d\n", 1842 ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem); 1843 device_printf(sc->amr_dev, "ccb %p bio %p\n", ac->ac_ccb_data, ac->ac_bio); 1844 1845 /* get base address of s/g table */ 1846 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1847 for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++) 1848 device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count); 1849} 1850#endif 1851#endif 1852