amr.c revision 119277
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 * Copyright (c) 2002 Eric Moore 28 * Copyright (c) 2002 LSI Logic Corporation 29 * All rights reserved. 30 * 31 * Redistribution and use in source and binary forms, with or without 32 * modification, are permitted provided that the following conditions 33 * are met: 34 * 1. Redistributions of source code must retain the above copyright 35 * notice, this list of conditions and the following disclaimer. 36 * 2. Redistributions in binary form must reproduce the above copyright 37 * notice, this list of conditions and the following disclaimer in the 38 * documentation and/or other materials provided with the distribution. 39 * 3. The party using or redistributing the source code and binary forms 40 * agrees to the disclaimer below and the terms and conditions set forth 41 * herein. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53 * SUCH DAMAGE. 54 * 55 * 56 * $FreeBSD: head/sys/dev/amr/amr.c 119277 2003-08-22 05:54:52Z imp $ 57 */ 58 59/* 60 * Driver for the AMI MegaRaid family of controllers. 61 */ 62 63#include <sys/param.h> 64#include <sys/systm.h> 65#include <sys/malloc.h> 66#include <sys/kernel.h> 67 68#include <dev/amr/amr_compat.h> 69#include <sys/bus.h> 70#include <sys/conf.h> 71#include <sys/stat.h> 72 73#include <machine/bus_memio.h> 74#include <machine/bus_pio.h> 75#include <machine/bus.h> 76#include <machine/resource.h> 77#include <sys/rman.h> 78 79#include <dev/pci/pcireg.h> 80#include <dev/pci/pcivar.h> 81 82#include <dev/amr/amrio.h> 83#include <dev/amr/amrreg.h> 84#include <dev/amr/amrvar.h> 85#define AMR_DEFINE_TABLES 86#include <dev/amr/amr_tables.h> 87 88#define AMR_CDEV_MAJOR 132 89 90static d_open_t amr_open; 91static d_close_t amr_close; 92static d_ioctl_t amr_ioctl; 93 94static struct cdevsw amr_cdevsw = { 95 .d_open = amr_open, 96 .d_close = amr_close, 97 .d_ioctl = amr_ioctl, 98 .d_name = "amr", 99 .d_maj = AMR_CDEV_MAJOR, 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 != (dev_t)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(dev_t 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(dev_t 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(dev_t 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 count=0; 980 while (sc->amr_busyslots){ 981 tsleep(sc, PRIBIO | PCATCH, "amrpoll", hz); 982 if(count++>10) { 983 break; 984 } 985 } 986 987 if(sc->amr_busyslots) { 988 device_printf(sc->amr_dev, "adapter is busy\n"); 989 splx(s); 990 amr_unmapcmd(ac); 991 ac->ac_status=0; 992 return(1); 993 } 994 995 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 996 997 /* clear the poll/ack fields in the mailbox */ 998 sc->amr_mailbox->mb_ident = 0xFE; 999 sc->amr_mailbox->mb_nstatus = 0xFF; 1000 sc->amr_mailbox->mb_status = 0xFF; 1001 sc->amr_mailbox->mb_poll = 0; 1002 sc->amr_mailbox->mb_ack = 0; 1003 sc->amr_mailbox->mb_busy = 1; 1004 1005 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1006 1007 while(sc->amr_mailbox->mb_nstatus == 0xFF); 1008 while(sc->amr_mailbox->mb_status == 0xFF); 1009 ac->ac_status=sc->amr_mailbox->mb_status; 1010 error = (ac->ac_status !=AMR_STATUS_SUCCESS) ? 1:0; 1011 while(sc->amr_mailbox->mb_poll != 0x77); 1012 sc->amr_mailbox->mb_poll = 0; 1013 sc->amr_mailbox->mb_ack = 0x77; 1014 1015 /* acknowledge that we have the commands */ 1016 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1017 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK); 1018 1019 splx(s); 1020 1021 /* unmap the command's data buffer */ 1022 amr_unmapcmd(ac); 1023 1024 return(error); 1025} 1026 1027/******************************************************************************** 1028 * Get a free command slot for a command if it doesn't already have one. 1029 * 1030 * May be safely called multiple times for a given command. 1031 */ 1032static int 1033amr_getslot(struct amr_command *ac) 1034{ 1035 struct amr_softc *sc = ac->ac_sc; 1036 int s, slot, limit, error; 1037 1038 debug_called(3); 1039 1040 /* if the command already has a slot, don't try to give it another one */ 1041 if (ac->ac_slot != 0) 1042 return(0); 1043 1044 /* enforce slot usage limit */ 1045 limit = (ac->ac_flags & AMR_CMD_PRIORITY) ? sc->amr_maxio : sc->amr_maxio - 4; 1046 if (sc->amr_busyslots > limit) 1047 return(EBUSY); 1048 1049 /* 1050 * Allocate a slot. XXX linear scan is slow 1051 */ 1052 error = EBUSY; 1053 s = splbio(); 1054 for (slot = 0; slot < sc->amr_maxio; slot++) { 1055 if (sc->amr_busycmd[slot] == NULL) { 1056 sc->amr_busycmd[slot] = ac; 1057 sc->amr_busyslots++; 1058 ac->ac_slot = slot; 1059 error = 0; 1060 break; 1061 } 1062 } 1063 splx(s); 1064 1065 return(error); 1066} 1067 1068/******************************************************************************** 1069 * Map/unmap (ac)'s data in the controller's addressable space as required. 1070 * 1071 * These functions may be safely called multiple times on a given command. 1072 */ 1073static void 1074amr_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1075{ 1076 struct amr_command *ac = (struct amr_command *)arg; 1077 struct amr_softc *sc = ac->ac_sc; 1078 struct amr_sgentry *sg; 1079 int i; 1080 u_int8_t *sgc; 1081 1082 debug_called(3); 1083 1084 /* get base address of s/g table */ 1085 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1086 1087 /* save data physical address */ 1088 ac->ac_dataphys = segs[0].ds_addr; 1089 1090 /* for AMR_CMD_CONFIG the s/g count goes elsewhere */ 1091 if (ac->ac_mailbox.mb_command == AMR_CMD_CONFIG) { 1092 sgc = &(((struct amr_mailbox_ioctl *)&ac->ac_mailbox)->mb_param); 1093 } else { 1094 sgc = &ac->ac_mailbox.mb_nsgelem; 1095 } 1096 1097 /* decide whether we need to populate the s/g table */ 1098 if (nsegments < 2) { 1099 *sgc = 0; 1100 ac->ac_mailbox.mb_nsgelem = 0; 1101 ac->ac_mailbox.mb_physaddr = ac->ac_dataphys; 1102 } else { 1103 ac->ac_mailbox.mb_nsgelem = nsegments; 1104 *sgc = nsegments; 1105 ac->ac_mailbox.mb_physaddr = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1106 for (i = 0; i < nsegments; i++, sg++) { 1107 sg->sg_addr = segs[i].ds_addr; 1108 sg->sg_count = segs[i].ds_len; 1109 } 1110 } 1111} 1112 1113static void 1114amr_setup_ccbmap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1115{ 1116 struct amr_command *ac = (struct amr_command *)arg; 1117 struct amr_softc *sc = ac->ac_sc; 1118 struct amr_sgentry *sg; 1119 struct amr_passthrough *ap = (struct amr_passthrough *)ac->ac_data; 1120 struct amr_ext_passthrough *aep = (struct amr_ext_passthrough *)ac->ac_data; 1121 int i; 1122 1123 /* get base address of s/g table */ 1124 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1125 1126 /* decide whether we need to populate the s/g table */ 1127 if( ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS ) { 1128 if (nsegments < 2) { 1129 aep->ap_no_sg_elements = 0; 1130 aep->ap_data_transfer_address = segs[0].ds_addr; 1131 } else { 1132 /* save s/g table information in passthrough */ 1133 aep->ap_no_sg_elements = nsegments; 1134 aep->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1135 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1136 for (i = 0; i < nsegments; i++, sg++) { 1137 sg->sg_addr = segs[i].ds_addr; 1138 sg->sg_count = segs[i].ds_len; 1139 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1140 } 1141 } 1142 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1143 aep->ap_no_sg_elements, aep->ap_data_transfer_address, ac->ac_dataphys); 1144 } else { 1145 if (nsegments < 2) { 1146 ap->ap_no_sg_elements = 0; 1147 ap->ap_data_transfer_address = segs[0].ds_addr; 1148 } else { 1149 /* save s/g table information in passthrough */ 1150 ap->ap_no_sg_elements = nsegments; 1151 ap->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1152 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1153 for (i = 0; i < nsegments; i++, sg++) { 1154 sg->sg_addr = segs[i].ds_addr; 1155 sg->sg_count = segs[i].ds_len; 1156 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1157 } 1158 } 1159 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1160 ap->ap_no_sg_elements, ap->ap_data_transfer_address, ac->ac_dataphys); 1161 } 1162} 1163 1164static void 1165amr_mapcmd(struct amr_command *ac) 1166{ 1167 struct amr_softc *sc = ac->ac_sc; 1168 1169 debug_called(3); 1170 1171 /* if the command involves data at all, and hasn't been mapped */ 1172 if (!(ac->ac_flags & AMR_CMD_MAPPED)) { 1173 1174 if (ac->ac_data != NULL) { 1175 /* map the data buffers into bus space and build the s/g list */ 1176 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_dmamap, ac->ac_data, ac->ac_length, 1177 amr_setup_dmamap, ac, 0); 1178 if (ac->ac_flags & AMR_CMD_DATAIN) 1179 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREREAD); 1180 if (ac->ac_flags & AMR_CMD_DATAOUT) 1181 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREWRITE); 1182 } 1183 1184 if (ac->ac_ccb_data != NULL) { 1185 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, ac->ac_ccb_data, ac->ac_ccb_length, 1186 amr_setup_ccbmap, ac, 0); 1187 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1188 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREREAD); 1189 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1190 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREWRITE); 1191 } 1192 ac->ac_flags |= AMR_CMD_MAPPED; 1193 } 1194} 1195 1196static void 1197amr_unmapcmd(struct amr_command *ac) 1198{ 1199 struct amr_softc *sc = ac->ac_sc; 1200 1201 debug_called(3); 1202 1203 /* if the command involved data at all and was mapped */ 1204 if (ac->ac_flags & AMR_CMD_MAPPED) { 1205 1206 if (ac->ac_data != NULL) { 1207 if (ac->ac_flags & AMR_CMD_DATAIN) 1208 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTREAD); 1209 if (ac->ac_flags & AMR_CMD_DATAOUT) 1210 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE); 1211 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap); 1212 } 1213 1214 if (ac->ac_ccb_data != NULL) { 1215 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1216 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTREAD); 1217 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1218 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTWRITE); 1219 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_ccb_dmamap); 1220 } 1221 ac->ac_flags &= ~AMR_CMD_MAPPED; 1222 } 1223} 1224 1225/******************************************************************************** 1226 * Take a command and give it to the controller, returns 0 if successful, or 1227 * EBUSY if the command should be retried later. 1228 */ 1229static int 1230amr_start(struct amr_command *ac) 1231{ 1232 struct amr_softc *sc = ac->ac_sc; 1233 int done, s, i; 1234 1235 debug_called(3); 1236 1237 /* mark command as busy so that polling consumer can tell */ 1238 ac->ac_flags |= AMR_CMD_BUSY; 1239 1240 /* get a command slot (freed in amr_done) */ 1241 if (amr_getslot(ac)) 1242 return(EBUSY); 1243 1244 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 1245 amr_mapcmd(ac); 1246 1247 /* mark the new mailbox we are going to copy in as busy */ 1248 ac->ac_mailbox.mb_busy = 1; 1249 1250 /* clear the poll/ack fields in the mailbox */ 1251 sc->amr_mailbox->mb_poll = 0; 1252 sc->amr_mailbox->mb_ack = 0; 1253 1254 /* 1255 * Save the slot number so that we can locate this command when complete. 1256 * Note that ident = 0 seems to be special, so we don't use it. 1257 */ 1258 ac->ac_mailbox.mb_ident = ac->ac_slot + 1; 1259 1260 /* 1261 * Spin waiting for the mailbox, give up after ~1 second. We expect the 1262 * controller to be able to handle our I/O. 1263 * 1264 * XXX perhaps we should wait for less time, and count on the deferred command 1265 * handling to deal with retries? 1266 */ 1267 debug(4, "wait for mailbox"); 1268 for (i = 10000, done = 0; (i > 0) && !done; i--) { 1269 s = splbio(); 1270 1271 /* is the mailbox free? */ 1272 if (sc->amr_mailbox->mb_busy == 0) { 1273 debug(4, "got mailbox"); 1274 sc->amr_mailbox64->mb64_segment = 0; 1275 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 1276 done = 1; 1277 1278 /* not free, spin waiting */ 1279 } else { 1280 debug(4, "busy flag %x\n", sc->amr_mailbox->mb_busy); 1281 /* this is somewhat ugly */ 1282 DELAY(100); 1283 } 1284 splx(s); /* drop spl to allow completion interrupts */ 1285 } 1286 1287 /* 1288 * Now give the command to the controller 1289 */ 1290 if (done) { 1291 if (sc->amr_submit_command(sc)) { 1292 /* the controller wasn't ready to take the command, forget that we tried to post it */ 1293 sc->amr_mailbox->mb_busy = 0; 1294 return(EBUSY); 1295 } 1296 debug(3, "posted command"); 1297 return(0); 1298 } 1299 1300 /* 1301 * The controller wouldn't take the command. Return the command as busy 1302 * so that it is retried later. 1303 */ 1304 return(EBUSY); 1305} 1306 1307/******************************************************************************** 1308 * Extract one or more completed commands from the controller (sc) 1309 * 1310 * Returns nonzero if any commands on the work queue were marked as completed. 1311 */ 1312int 1313amr_done(struct amr_softc *sc) 1314{ 1315 struct amr_command *ac; 1316 struct amr_mailbox mbox; 1317 int i, idx, result; 1318 1319 debug_called(3); 1320 1321 /* See if there's anything for us to do */ 1322 result = 0; 1323 1324 /* loop collecting completed commands */ 1325 for (;;) { 1326 /* poll for a completed command's identifier and status */ 1327 if (sc->amr_get_work(sc, &mbox)) { 1328 result = 1; 1329 1330 /* iterate over completed commands in this result */ 1331 for (i = 0; i < mbox.mb_nstatus; i++) { 1332 /* get pointer to busy command */ 1333 idx = mbox.mb_completed[i] - 1; 1334 ac = sc->amr_busycmd[idx]; 1335 1336 /* really a busy command? */ 1337 if (ac != NULL) { 1338 1339 /* pull the command from the busy index */ 1340 sc->amr_busycmd[idx] = NULL; 1341 sc->amr_busyslots--; 1342 1343 /* save status for later use */ 1344 ac->ac_status = mbox.mb_status; 1345 amr_enqueue_completed(ac); 1346 debug(3, "completed command with status %x", mbox.mb_status); 1347 } else { 1348 device_printf(sc->amr_dev, "bad slot %d completed\n", idx); 1349 } 1350 } 1351 } else { 1352 break; /* no work */ 1353 } 1354 } 1355 1356 /* if we've completed any commands, try posting some more */ 1357 if (result) 1358 amr_startio(sc); 1359 1360 /* handle completion and timeouts */ 1361#if __FreeBSD_version >= 500005 1362 if (sc->amr_state & AMR_STATE_INTEN) 1363 taskqueue_enqueue(taskqueue_swi_giant, &sc->amr_task_complete); 1364 else 1365#endif 1366 amr_complete(sc, 0); 1367 1368 return(result); 1369} 1370 1371/******************************************************************************** 1372 * Do completion processing on done commands on (sc) 1373 */ 1374static void 1375amr_complete(void *context, int pending) 1376{ 1377 struct amr_softc *sc = (struct amr_softc *)context; 1378 struct amr_command *ac; 1379 1380 debug_called(3); 1381 1382 /* pull completed commands off the queue */ 1383 for (;;) { 1384 ac = amr_dequeue_completed(sc); 1385 if (ac == NULL) 1386 break; 1387 1388 /* unmap the command's data buffer */ 1389 amr_unmapcmd(ac); 1390 1391 /* unbusy the command */ 1392 ac->ac_flags &= ~AMR_CMD_BUSY; 1393 1394 /* 1395 * Is there a completion handler? 1396 */ 1397 if (ac->ac_complete != NULL) { 1398 ac->ac_complete(ac); 1399 1400 /* 1401 * Is someone sleeping on this one? 1402 */ 1403 } else if (ac->ac_flags & AMR_CMD_SLEEP) { 1404 wakeup(ac); 1405 } 1406 1407 if(!sc->amr_busyslots) { 1408 wakeup(sc); 1409 } 1410 } 1411} 1412 1413/******************************************************************************** 1414 ******************************************************************************** 1415 Command Buffer Management 1416 ******************************************************************************** 1417 ********************************************************************************/ 1418 1419/******************************************************************************** 1420 * Get a new command buffer. 1421 * 1422 * This may return NULL in low-memory cases. 1423 * 1424 * If possible, we recycle a command buffer that's been used before. 1425 */ 1426struct amr_command * 1427amr_alloccmd(struct amr_softc *sc) 1428{ 1429 struct amr_command *ac; 1430 1431 debug_called(3); 1432 1433 ac = amr_dequeue_free(sc); 1434 if (ac == NULL) { 1435 amr_alloccmd_cluster(sc); 1436 ac = amr_dequeue_free(sc); 1437 } 1438 if (ac == NULL) 1439 return(NULL); 1440 1441 /* clear out significant fields */ 1442 ac->ac_slot = 0; 1443 ac->ac_status = 0; 1444 bzero(&ac->ac_mailbox, sizeof(struct amr_mailbox)); 1445 ac->ac_flags = 0; 1446 ac->ac_bio = NULL; 1447 ac->ac_data = NULL; 1448 ac->ac_ccb_data = NULL; 1449 ac->ac_complete = NULL; 1450 return(ac); 1451} 1452 1453/******************************************************************************** 1454 * Release a command buffer for recycling. 1455 */ 1456void 1457amr_releasecmd(struct amr_command *ac) 1458{ 1459 debug_called(3); 1460 1461 amr_enqueue_free(ac); 1462} 1463 1464/******************************************************************************** 1465 * Allocate a new command cluster and initialise it. 1466 */ 1467static void 1468amr_alloccmd_cluster(struct amr_softc *sc) 1469{ 1470 struct amr_command_cluster *acc; 1471 struct amr_command *ac; 1472 int s, i; 1473 1474 acc = malloc(AMR_CMD_CLUSTERSIZE, M_DEVBUF, M_NOWAIT); 1475 if (acc != NULL) { 1476 s = splbio(); 1477 TAILQ_INSERT_TAIL(&sc->amr_cmd_clusters, acc, acc_link); 1478 splx(s); 1479 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) { 1480 ac = &acc->acc_command[i]; 1481 bzero(ac, sizeof(*ac)); 1482 ac->ac_sc = sc; 1483 if (!bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_dmamap) && 1484 !bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_ccb_dmamap)) 1485 amr_releasecmd(ac); 1486 } 1487 } 1488} 1489 1490/******************************************************************************** 1491 * Free a command cluster 1492 */ 1493static void 1494amr_freecmd_cluster(struct amr_command_cluster *acc) 1495{ 1496 struct amr_softc *sc = acc->acc_command[0].ac_sc; 1497 int i; 1498 1499 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) 1500 bus_dmamap_destroy(sc->amr_buffer_dmat, acc->acc_command[i].ac_dmamap); 1501 free(acc, M_DEVBUF); 1502} 1503 1504/******************************************************************************** 1505 ******************************************************************************** 1506 Interface-specific Shims 1507 ******************************************************************************** 1508 ********************************************************************************/ 1509 1510/******************************************************************************** 1511 * Tell the controller that the mailbox contains a valid command 1512 */ 1513static int 1514amr_quartz_submit_command(struct amr_softc *sc) 1515{ 1516 debug_called(3); 1517 1518 if (AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT) 1519 return(EBUSY); 1520 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1521 return(0); 1522} 1523 1524static int 1525amr_std_submit_command(struct amr_softc *sc) 1526{ 1527 debug_called(3); 1528 1529 if (AMR_SGET_MBSTAT(sc) & AMR_SMBOX_BUSYFLAG) 1530 return(EBUSY); 1531 AMR_SPOST_COMMAND(sc); 1532 return(0); 1533} 1534 1535/******************************************************************************** 1536 * Claim any work that the controller has completed; acknowledge completion, 1537 * save details of the completion in (mbsave) 1538 */ 1539static int 1540amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1541{ 1542 int s, worked; 1543 u_int32_t outd; 1544 1545 debug_called(3); 1546 1547 worked = 0; 1548 s = splbio(); 1549 1550 /* work waiting for us? */ 1551 if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) { 1552 1553 /* save mailbox, which contains a list of completed commands */ 1554 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1555 1556 /* acknowledge interrupt */ 1557 AMR_QPUT_ODB(sc, AMR_QODB_READY); 1558 1559 /* acknowledge that we have the commands */ 1560 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1561 1562#ifndef AMR_QUARTZ_GOFASTER 1563 /* 1564 * This waits for the controller to notice that we've taken the 1565 * command from it. It's very inefficient, and we shouldn't do it, 1566 * but if we remove this code, we stop completing commands under 1567 * load. 1568 * 1569 * Peter J says we shouldn't do this. The documentation says we 1570 * should. Who is right? 1571 */ 1572 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK) 1573 ; /* XXX aiee! what if it dies? */ 1574#endif 1575 1576 worked = 1; /* got some work */ 1577 } 1578 1579 splx(s); 1580 return(worked); 1581} 1582 1583static int 1584amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1585{ 1586 int s, worked; 1587 u_int8_t istat; 1588 1589 debug_called(3); 1590 1591 worked = 0; 1592 s = splbio(); 1593 1594 /* check for valid interrupt status */ 1595 istat = AMR_SGET_ISTAT(sc); 1596 if ((istat & AMR_SINTR_VALID) != 0) { 1597 AMR_SPUT_ISTAT(sc, istat); /* ack interrupt status */ 1598 1599 /* save mailbox, which contains a list of completed commands */ 1600 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1601 1602 AMR_SACK_INTERRUPT(sc); /* acknowledge we have the mailbox */ 1603 worked = 1; 1604 } 1605 1606 splx(s); 1607 return(worked); 1608} 1609 1610/******************************************************************************** 1611 * Notify the controller of the mailbox location. 1612 */ 1613static void 1614amr_std_attach_mailbox(struct amr_softc *sc) 1615{ 1616 1617 /* program the mailbox physical address */ 1618 AMR_SBYTE_SET(sc, AMR_SMBOX_0, sc->amr_mailboxphys & 0xff); 1619 AMR_SBYTE_SET(sc, AMR_SMBOX_1, (sc->amr_mailboxphys >> 8) & 0xff); 1620 AMR_SBYTE_SET(sc, AMR_SMBOX_2, (sc->amr_mailboxphys >> 16) & 0xff); 1621 AMR_SBYTE_SET(sc, AMR_SMBOX_3, (sc->amr_mailboxphys >> 24) & 0xff); 1622 AMR_SBYTE_SET(sc, AMR_SMBOX_ENABLE, AMR_SMBOX_ADDR); 1623 1624 /* clear any outstanding interrupt and enable interrupts proper */ 1625 AMR_SACK_INTERRUPT(sc); 1626 AMR_SENABLE_INTR(sc); 1627} 1628 1629#ifdef AMR_BOARD_INIT 1630/******************************************************************************** 1631 * Initialise the controller 1632 */ 1633static int 1634amr_quartz_init(struct amr_softc *sc) 1635{ 1636 int status, ostatus; 1637 1638 device_printf(sc->amr_dev, "initial init status %x\n", AMR_QGET_INITSTATUS(sc)); 1639 1640 AMR_QRESET(sc); 1641 1642 ostatus = 0xff; 1643 while ((status = AMR_QGET_INITSTATUS(sc)) != AMR_QINIT_DONE) { 1644 if (status != ostatus) { 1645 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_qinit, status)); 1646 ostatus = status; 1647 } 1648 switch (status) { 1649 case AMR_QINIT_NOMEM: 1650 return(ENOMEM); 1651 1652 case AMR_QINIT_SCAN: 1653 /* XXX we could print channel/target here */ 1654 break; 1655 } 1656 } 1657 return(0); 1658} 1659 1660static int 1661amr_std_init(struct amr_softc *sc) 1662{ 1663 int status, ostatus; 1664 1665 device_printf(sc->amr_dev, "initial init status %x\n", AMR_SGET_INITSTATUS(sc)); 1666 1667 AMR_SRESET(sc); 1668 1669 ostatus = 0xff; 1670 while ((status = AMR_SGET_INITSTATUS(sc)) != AMR_SINIT_DONE) { 1671 if (status != ostatus) { 1672 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_sinit, status)); 1673 ostatus = status; 1674 } 1675 switch (status) { 1676 case AMR_SINIT_NOMEM: 1677 return(ENOMEM); 1678 1679 case AMR_SINIT_INPROG: 1680 /* XXX we could print channel/target here? */ 1681 break; 1682 } 1683 } 1684 return(0); 1685} 1686#endif 1687 1688/******************************************************************************** 1689 ******************************************************************************** 1690 Debugging 1691 ******************************************************************************** 1692 ********************************************************************************/ 1693 1694/******************************************************************************** 1695 * Identify the controller and print some information about it. 1696 */ 1697static void 1698amr_describe_controller(struct amr_softc *sc) 1699{ 1700 struct amr_prodinfo *ap; 1701 struct amr_enquiry *ae; 1702 char *prod; 1703 1704 /* 1705 * Try to get 40LD product info, which tells us what the card is labelled as. 1706 */ 1707 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) != NULL) { 1708 device_printf(sc->amr_dev, "<LSILogic %.80s> Firmware %.16s, BIOS %.16s, %dMB RAM\n", 1709 ap->ap_product, ap->ap_firmware, ap->ap_bios, 1710 ap->ap_memsize); 1711 1712 free(ap, M_DEVBUF); 1713 return; 1714 } 1715 1716 /* 1717 * Try 8LD extended ENQUIRY to get controller signature, and use lookup table. 1718 */ 1719 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) != NULL) { 1720 prod = amr_describe_code(amr_table_adaptertype, ae->ae_signature); 1721 1722 } else if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) != NULL) { 1723 1724 /* 1725 * Try to work it out based on the PCI signatures. 1726 */ 1727 switch (pci_get_device(sc->amr_dev)) { 1728 case 0x9010: 1729 prod = "Series 428"; 1730 break; 1731 case 0x9060: 1732 prod = "Series 434"; 1733 break; 1734 default: 1735 prod = "unknown controller"; 1736 break; 1737 } 1738 } else { 1739 prod = "unsupported controller"; 1740 } 1741 1742 /* 1743 * HP NetRaid controllers have a special encoding of the firmware and 1744 * BIOS versions. The AMI version seems to have it as strings whereas 1745 * the HP version does it with a leading uppercase character and two 1746 * binary numbers. 1747 */ 1748 1749 if(ae->ae_adapter.aa_firmware[2] >= 'A' && 1750 ae->ae_adapter.aa_firmware[2] <= 'Z' && 1751 ae->ae_adapter.aa_firmware[1] < ' ' && 1752 ae->ae_adapter.aa_firmware[0] < ' ' && 1753 ae->ae_adapter.aa_bios[2] >= 'A' && 1754 ae->ae_adapter.aa_bios[2] <= 'Z' && 1755 ae->ae_adapter.aa_bios[1] < ' ' && 1756 ae->ae_adapter.aa_bios[0] < ' ') { 1757 1758 /* this looks like we have an HP NetRaid version of the MegaRaid */ 1759 1760 if(ae->ae_signature == AMR_SIG_438) { 1761 /* the AMI 438 is a NetRaid 3si in HP-land */ 1762 prod = "HP NetRaid 3si"; 1763 } 1764 1765 device_printf(sc->amr_dev, "<%s> Firmware %c.%02d.%02d, BIOS %c.%02d.%02d, %dMB RAM\n", 1766 prod, ae->ae_adapter.aa_firmware[2], 1767 ae->ae_adapter.aa_firmware[1], 1768 ae->ae_adapter.aa_firmware[0], 1769 ae->ae_adapter.aa_bios[2], 1770 ae->ae_adapter.aa_bios[1], 1771 ae->ae_adapter.aa_bios[0], 1772 ae->ae_adapter.aa_memorysize); 1773 } else { 1774 device_printf(sc->amr_dev, "<%s> Firmware %.4s, BIOS %.4s, %dMB RAM\n", 1775 prod, ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios, 1776 ae->ae_adapter.aa_memorysize); 1777 } 1778 free(ae, M_DEVBUF); 1779} 1780 1781#ifdef AMR_DEBUG 1782/******************************************************************************** 1783 * Print the command (ac) in human-readable format 1784 */ 1785#if 0 1786static void 1787amr_printcommand(struct amr_command *ac) 1788{ 1789 struct amr_softc *sc = ac->ac_sc; 1790 struct amr_sgentry *sg; 1791 int i; 1792 1793 device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n", 1794 ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive); 1795 device_printf(sc->amr_dev, "blkcount %d lba %d\n", 1796 ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba); 1797 device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length); 1798 device_printf(sc->amr_dev, "sg physaddr %08x nsg %d\n", 1799 ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem); 1800 device_printf(sc->amr_dev, "ccb %p bio %p\n", ac->ac_ccb_data, ac->ac_bio); 1801 1802 /* get base address of s/g table */ 1803 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1804 for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++) 1805 device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count); 1806} 1807#endif 1808#endif 1809