amr.c revision 125594
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 125594 2004-02-08 16:07:22Z scottl $"); 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_open = amr_open, 95 .d_close = amr_close, 96 .d_ioctl = amr_ioctl, 97 .d_name = "amr", 98}; 99 100/* 101 * Initialisation, bus interface. 102 */ 103static void amr_startup(void *arg); 104 105/* 106 * Command wrappers 107 */ 108static int amr_query_controller(struct amr_softc *sc); 109static void *amr_enquiry(struct amr_softc *sc, size_t bufsize, 110 u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual); 111static void amr_completeio(struct amr_command *ac); 112static int amr_support_ext_cdb(struct amr_softc *sc); 113 114/* 115 * Command buffer allocation. 116 */ 117static void amr_alloccmd_cluster(struct amr_softc *sc); 118static void amr_freecmd_cluster(struct amr_command_cluster *acc); 119 120/* 121 * Command processing. 122 */ 123static int amr_bio_command(struct amr_softc *sc, struct amr_command **acp); 124static int amr_wait_command(struct amr_command *ac); 125static int amr_getslot(struct amr_command *ac); 126static void amr_mapcmd(struct amr_command *ac); 127static void amr_unmapcmd(struct amr_command *ac); 128static int amr_start(struct amr_command *ac); 129static void amr_complete(void *context, int pending); 130 131/* 132 * Status monitoring 133 */ 134static void amr_periodic(void *data); 135 136/* 137 * Interface-specific shims 138 */ 139static int amr_quartz_submit_command(struct amr_softc *sc); 140static int amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 141static int amr_quartz_poll_command(struct amr_command *ac); 142 143static int amr_std_submit_command(struct amr_softc *sc); 144static int amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 145static int amr_std_poll_command(struct amr_command *ac); 146static void amr_std_attach_mailbox(struct amr_softc *sc); 147 148#ifdef AMR_BOARD_INIT 149static int amr_quartz_init(struct amr_softc *sc); 150static int amr_std_init(struct amr_softc *sc); 151#endif 152 153/* 154 * Debugging 155 */ 156static void amr_describe_controller(struct amr_softc *sc); 157#ifdef AMR_DEBUG 158#if 0 159static void amr_printcommand(struct amr_command *ac); 160#endif 161#endif 162 163/******************************************************************************** 164 ******************************************************************************** 165 Inline Glue 166 ******************************************************************************** 167 ********************************************************************************/ 168 169/******************************************************************************** 170 ******************************************************************************** 171 Public Interfaces 172 ******************************************************************************** 173 ********************************************************************************/ 174 175/******************************************************************************** 176 * Initialise the controller and softc. 177 */ 178int 179amr_attach(struct amr_softc *sc) 180{ 181 182 debug_called(1); 183 184 /* 185 * Initialise per-controller queues. 186 */ 187 TAILQ_INIT(&sc->amr_completed); 188 TAILQ_INIT(&sc->amr_freecmds); 189 TAILQ_INIT(&sc->amr_cmd_clusters); 190 TAILQ_INIT(&sc->amr_ready); 191 bioq_init(&sc->amr_bioq); 192 193#if __FreeBSD_version >= 500005 194 /* 195 * Initialise command-completion task. 196 */ 197 TASK_INIT(&sc->amr_task_complete, 0, amr_complete, sc); 198#endif 199 200 debug(2, "queue init done"); 201 202 /* 203 * Configure for this controller type. 204 */ 205 if (AMR_IS_QUARTZ(sc)) { 206 sc->amr_submit_command = amr_quartz_submit_command; 207 sc->amr_get_work = amr_quartz_get_work; 208 sc->amr_poll_command = amr_quartz_poll_command; 209 } else { 210 sc->amr_submit_command = amr_std_submit_command; 211 sc->amr_get_work = amr_std_get_work; 212 sc->amr_poll_command = amr_std_poll_command; 213 amr_std_attach_mailbox(sc);; 214 } 215 216#ifdef AMR_BOARD_INIT 217 if ((AMR_IS_QUARTZ(sc) ? amr_quartz_init(sc) : amr_std_init(sc)))) 218 return(ENXIO); 219#endif 220 221 /* 222 * Quiz controller for features and limits. 223 */ 224 if (amr_query_controller(sc)) 225 return(ENXIO); 226 227 debug(2, "controller query complete"); 228 229 /* 230 * Attach our 'real' SCSI channels to CAM. 231 */ 232 if (amr_cam_attach(sc)) 233 return(ENXIO); 234 debug(2, "CAM attach done"); 235 236 /* 237 * Create the control device. 238 */ 239 sc->amr_dev_t = make_dev(&amr_cdevsw, device_get_unit(sc->amr_dev), UID_ROOT, GID_OPERATOR, 240 S_IRUSR | S_IWUSR, "amr%d", device_get_unit(sc->amr_dev)); 241 sc->amr_dev_t->si_drv1 = sc; 242 243 /* 244 * Schedule ourselves to bring the controller up once interrupts are 245 * available. 246 */ 247 bzero(&sc->amr_ich, sizeof(struct intr_config_hook)); 248 sc->amr_ich.ich_func = amr_startup; 249 sc->amr_ich.ich_arg = sc; 250 if (config_intrhook_establish(&sc->amr_ich) != 0) { 251 device_printf(sc->amr_dev, "can't establish configuration hook\n"); 252 return(ENOMEM); 253 } 254 255 /* 256 * Print a little information about the controller. 257 */ 258 amr_describe_controller(sc); 259 260 debug(2, "attach complete"); 261 return(0); 262} 263 264/******************************************************************************** 265 * Locate disk resources and attach children to them. 266 */ 267static void 268amr_startup(void *arg) 269{ 270 struct amr_softc *sc = (struct amr_softc *)arg; 271 struct amr_logdrive *dr; 272 int i, error; 273 274 debug_called(1); 275 276 /* pull ourselves off the intrhook chain */ 277 config_intrhook_disestablish(&sc->amr_ich); 278 279 /* get up-to-date drive information */ 280 if (amr_query_controller(sc)) { 281 device_printf(sc->amr_dev, "can't scan controller for drives\n"); 282 return; 283 } 284 285 /* iterate over available drives */ 286 for (i = 0, dr = &sc->amr_drive[0]; (i < AMR_MAXLD) && (dr->al_size != 0xffffffff); i++, dr++) { 287 /* are we already attached to this drive? */ 288 if (dr->al_disk == 0) { 289 /* generate geometry information */ 290 if (dr->al_size > 0x200000) { /* extended translation? */ 291 dr->al_heads = 255; 292 dr->al_sectors = 63; 293 } else { 294 dr->al_heads = 64; 295 dr->al_sectors = 32; 296 } 297 dr->al_cylinders = dr->al_size / (dr->al_heads * dr->al_sectors); 298 299 dr->al_disk = device_add_child(sc->amr_dev, NULL, -1); 300 if (dr->al_disk == 0) 301 device_printf(sc->amr_dev, "device_add_child failed\n"); 302 device_set_ivars(dr->al_disk, dr); 303 } 304 } 305 306 if ((error = bus_generic_attach(sc->amr_dev)) != 0) 307 device_printf(sc->amr_dev, "bus_generic_attach returned %d\n", error); 308 309 /* mark controller back up */ 310 sc->amr_state &= ~AMR_STATE_SHUTDOWN; 311 312 /* interrupts will be enabled before we do anything more */ 313 sc->amr_state |= AMR_STATE_INTEN; 314 315 /* 316 * Start the timeout routine. 317 */ 318/* sc->amr_timeout = timeout(amr_periodic, sc, hz);*/ 319 320 return; 321} 322 323/******************************************************************************* 324 * Free resources associated with a controller instance 325 */ 326void 327amr_free(struct amr_softc *sc) 328{ 329 struct amr_command_cluster *acc; 330 331 /* detach from CAM */ 332 amr_cam_detach(sc); 333 334 /* cancel status timeout */ 335 untimeout(amr_periodic, sc, sc->amr_timeout); 336 337 /* throw away any command buffers */ 338 while ((acc = TAILQ_FIRST(&sc->amr_cmd_clusters)) != NULL) { 339 TAILQ_REMOVE(&sc->amr_cmd_clusters, acc, acc_link); 340 amr_freecmd_cluster(acc); 341 } 342 343 /* destroy control device */ 344 if( sc->amr_dev_t != (dev_t)NULL) 345 destroy_dev(sc->amr_dev_t); 346} 347 348/******************************************************************************* 349 * Receive a bio structure from a child device and queue it on a particular 350 * disk resource, then poke the disk resource to start as much work as it can. 351 */ 352int 353amr_submit_bio(struct amr_softc *sc, struct bio *bio) 354{ 355 debug_called(2); 356 357 amr_enqueue_bio(sc, bio); 358 amr_startio(sc); 359 return(0); 360} 361 362/******************************************************************************** 363 * Accept an open operation on the control device. 364 */ 365static int 366amr_open(dev_t dev, int flags, int fmt, d_thread_t *td) 367{ 368 int unit = minor(dev); 369 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 370 371 debug_called(1); 372 373 sc->amr_state |= AMR_STATE_OPEN; 374 return(0); 375} 376 377/******************************************************************************** 378 * Accept the last close on the control device. 379 */ 380static int 381amr_close(dev_t dev, int flags, int fmt, d_thread_t *td) 382{ 383 int unit = minor(dev); 384 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 385 386 debug_called(1); 387 388 sc->amr_state &= ~AMR_STATE_OPEN; 389 return (0); 390} 391 392/******************************************************************************** 393 * Handle controller-specific control operations. 394 */ 395static int 396amr_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *td) 397{ 398 struct amr_softc *sc = (struct amr_softc *)dev->si_drv1; 399 int *arg = (int *)addr; 400 struct amr_user_ioctl *au = (struct amr_user_ioctl *)addr; 401 struct amr_command *ac; 402 struct amr_mailbox_ioctl *mbi; 403 struct amr_passthrough *ap; 404 void *dp; 405 int error; 406 407 debug_called(1); 408 409 error = 0; 410 dp = NULL; 411 ap = NULL; 412 ac = NULL; 413 switch(cmd) { 414 415 case AMR_IO_VERSION: 416 debug(1, "AMR_IO_VERSION"); 417 *arg = AMR_IO_VERSION_NUMBER; 418 break; 419 420 case AMR_IO_COMMAND: 421 debug(1, "AMR_IO_COMMAND 0x%x", au->au_cmd[0]); 422 /* handle inbound data buffer */ 423 if (au->au_length != 0) { 424 if ((dp = malloc(au->au_length, M_DEVBUF, M_WAITOK)) == NULL) { 425 error = ENOMEM; 426 break; 427 } 428 if ((error = copyin(au->au_buffer, dp, au->au_length)) != 0) 429 break; 430 debug(2, "copyin %ld bytes from %p -> %p", au->au_length, au->au_buffer, dp); 431 } 432 433 if ((ac = amr_alloccmd(sc)) == NULL) { 434 error = ENOMEM; 435 break; 436 } 437 438 /* handle SCSI passthrough command */ 439 if (au->au_cmd[0] == AMR_CMD_PASS) { 440 if ((ap = malloc(sizeof(*ap), M_DEVBUF, M_WAITOK | M_ZERO)) == NULL) { 441 error = ENOMEM; 442 break; 443 } 444 445 /* copy cdb */ 446 ap->ap_cdb_length = au->au_cmd[2]; 447 bcopy(&au->au_cmd[3], &ap->ap_cdb[0], ap->ap_cdb_length); 448 449 /* build passthrough */ 450 ap->ap_timeout = au->au_cmd[ap->ap_cdb_length + 3] & 0x07; 451 ap->ap_ars = (au->au_cmd[ap->ap_cdb_length + 3] & 0x08) ? 1 : 0; 452 ap->ap_islogical = (au->au_cmd[ap->ap_cdb_length + 3] & 0x80) ? 1 : 0; 453 ap->ap_logical_drive_no = au->au_cmd[ap->ap_cdb_length + 4]; 454 ap->ap_channel = au->au_cmd[ap->ap_cdb_length + 5]; 455 ap->ap_scsi_id = au->au_cmd[ap->ap_cdb_length + 6]; 456 ap->ap_request_sense_length = 14; 457 ap->ap_data_transfer_length = au->au_length; 458 /* XXX what about the request-sense area? does the caller want it? */ 459 460 /* build command */ 461 ac->ac_data = ap; 462 ac->ac_length = sizeof(*ap); 463 ac->ac_flags |= AMR_CMD_DATAOUT; 464 ac->ac_ccb_data = dp; 465 ac->ac_ccb_length = au->au_length; 466 if (au->au_direction & AMR_IO_READ) 467 ac->ac_flags |= AMR_CMD_CCB_DATAIN; 468 if (au->au_direction & AMR_IO_WRITE) 469 ac->ac_flags |= AMR_CMD_CCB_DATAOUT; 470 471 ac->ac_mailbox.mb_command = AMR_CMD_PASS; 472 473 } else { 474 /* direct command to controller */ 475 mbi = (struct amr_mailbox_ioctl *)&ac->ac_mailbox; 476 477 /* copy pertinent mailbox items */ 478 mbi->mb_command = au->au_cmd[0]; 479 mbi->mb_channel = au->au_cmd[1]; 480 mbi->mb_param = au->au_cmd[2]; 481 mbi->mb_pad[0] = au->au_cmd[3]; 482 mbi->mb_drive = au->au_cmd[4]; 483 484 /* build the command */ 485 ac->ac_data = dp; 486 ac->ac_length = au->au_length; 487 if (au->au_direction & AMR_IO_READ) 488 ac->ac_flags |= AMR_CMD_DATAIN; 489 if (au->au_direction & AMR_IO_WRITE) 490 ac->ac_flags |= AMR_CMD_DATAOUT; 491 } 492 493 /* run the command */ 494 if ((error = amr_wait_command(ac)) != 0) 495 break; 496 497 /* copy out data and set status */ 498 if (au->au_length != 0) 499 error = copyout(dp, au->au_buffer, au->au_length); 500 debug(2, "copyout %ld bytes from %p -> %p", au->au_length, dp, au->au_buffer); 501 if (dp != NULL) 502 debug(2, "%16d", (int)dp); 503 au->au_status = ac->ac_status; 504 break; 505 506 default: 507 debug(1, "unknown ioctl 0x%lx", cmd); 508 error = ENOIOCTL; 509 break; 510 } 511 512 if (dp != NULL) 513 free(dp, M_DEVBUF); 514 if (ap != NULL) 515 free(ap, M_DEVBUF); 516 if (ac != NULL) 517 amr_releasecmd(ac); 518 return(error); 519} 520 521/******************************************************************************** 522 ******************************************************************************** 523 Status Monitoring 524 ******************************************************************************** 525 ********************************************************************************/ 526 527/******************************************************************************** 528 * Perform a periodic check of the controller status 529 */ 530static void 531amr_periodic(void *data) 532{ 533 struct amr_softc *sc = (struct amr_softc *)data; 534 535 debug_called(2); 536 537 /* XXX perform periodic status checks here */ 538 539 /* compensate for missed interrupts */ 540 amr_done(sc); 541 542 /* reschedule */ 543 sc->amr_timeout = timeout(amr_periodic, sc, hz); 544} 545 546/******************************************************************************** 547 ******************************************************************************** 548 Command Wrappers 549 ******************************************************************************** 550 ********************************************************************************/ 551 552/******************************************************************************** 553 * Interrogate the controller for the operational parameters we require. 554 */ 555static int 556amr_query_controller(struct amr_softc *sc) 557{ 558 struct amr_enquiry3 *aex; 559 struct amr_prodinfo *ap; 560 struct amr_enquiry *ae; 561 int ldrv; 562 563 /* 564 * If we haven't found the real limit yet, let us have a couple of commands in 565 * order to be able to probe. 566 */ 567 if (sc->amr_maxio == 0) 568 sc->amr_maxio = 2; 569 570 /* 571 * Greater than 10 byte cdb support 572 */ 573 sc->support_ext_cdb = amr_support_ext_cdb(sc); 574 575 if(sc->support_ext_cdb) { 576 debug(2,"supports extended CDBs."); 577 } 578 579 /* 580 * Try to issue an ENQUIRY3 command 581 */ 582 if ((aex = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_ENQ3, 583 AMR_CONFIG_ENQ3_SOLICITED_FULL)) != NULL) { 584 585 /* 586 * Fetch current state of logical drives. 587 */ 588 for (ldrv = 0; ldrv < aex->ae_numldrives; ldrv++) { 589 sc->amr_drive[ldrv].al_size = aex->ae_drivesize[ldrv]; 590 sc->amr_drive[ldrv].al_state = aex->ae_drivestate[ldrv]; 591 sc->amr_drive[ldrv].al_properties = aex->ae_driveprop[ldrv]; 592 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 593 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 594 } 595 free(aex, M_DEVBUF); 596 597 /* 598 * Get product info for channel count. 599 */ 600 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) == NULL) { 601 device_printf(sc->amr_dev, "can't obtain product data from controller\n"); 602 return(1); 603 } 604 sc->amr_maxdrives = 40; 605 sc->amr_maxchan = ap->ap_nschan; 606 sc->amr_maxio = ap->ap_maxio; 607 sc->amr_type |= AMR_TYPE_40LD; 608 free(ap, M_DEVBUF); 609 610 } else { 611 612 /* failed, try the 8LD ENQUIRY commands */ 613 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) == NULL) { 614 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) == NULL) { 615 device_printf(sc->amr_dev, "can't obtain configuration data from controller\n"); 616 return(1); 617 } 618 ae->ae_signature = 0; 619 } 620 621 /* 622 * Fetch current state of logical drives. 623 */ 624 for (ldrv = 0; ldrv < ae->ae_ldrv.al_numdrives; ldrv++) { 625 sc->amr_drive[ldrv].al_size = ae->ae_ldrv.al_size[ldrv]; 626 sc->amr_drive[ldrv].al_state = ae->ae_ldrv.al_state[ldrv]; 627 sc->amr_drive[ldrv].al_properties = ae->ae_ldrv.al_properties[ldrv]; 628 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 629 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 630 } 631 632 sc->amr_maxdrives = 8; 633 sc->amr_maxchan = ae->ae_adapter.aa_channels; 634 sc->amr_maxio = ae->ae_adapter.aa_maxio; 635 free(ae, M_DEVBUF); 636 } 637 638 /* 639 * Mark remaining drives as unused. 640 */ 641 for (; ldrv < AMR_MAXLD; ldrv++) 642 sc->amr_drive[ldrv].al_size = 0xffffffff; 643 644 /* 645 * Cap the maximum number of outstanding I/Os. AMI's Linux driver doesn't trust 646 * the controller's reported value, and lockups have been seen when we do. 647 */ 648 sc->amr_maxio = imin(sc->amr_maxio, AMR_LIMITCMD); 649 650 return(0); 651} 652 653/******************************************************************************** 654 * Run a generic enquiry-style command. 655 */ 656static void * 657amr_enquiry(struct amr_softc *sc, size_t bufsize, u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual) 658{ 659 struct amr_command *ac; 660 void *result; 661 u_int8_t *mbox; 662 int error; 663 664 debug_called(1); 665 666 error = 1; 667 result = NULL; 668 669 /* get ourselves a command buffer */ 670 if ((ac = amr_alloccmd(sc)) == NULL) 671 goto out; 672 /* allocate the response structure */ 673 if ((result = malloc(bufsize, M_DEVBUF, M_NOWAIT)) == NULL) 674 goto out; 675 /* set command flags */ 676 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 677 678 /* point the command at our data */ 679 ac->ac_data = result; 680 ac->ac_length = bufsize; 681 682 /* build the command proper */ 683 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 684 mbox[0] = cmd; 685 mbox[2] = cmdsub; 686 mbox[3] = cmdqual; 687 688 /* can't assume that interrupts are going to work here, so play it safe */ 689 if (sc->amr_poll_command(ac)) 690 goto out; 691 error = ac->ac_status; 692 693 out: 694 if (ac != NULL) 695 amr_releasecmd(ac); 696 if ((error != 0) && (result != NULL)) { 697 free(result, M_DEVBUF); 698 result = NULL; 699 } 700 return(result); 701} 702 703/******************************************************************************** 704 * Flush the controller's internal cache, return status. 705 */ 706int 707amr_flush(struct amr_softc *sc) 708{ 709 struct amr_command *ac; 710 int error; 711 712 /* get ourselves a command buffer */ 713 error = 1; 714 if ((ac = amr_alloccmd(sc)) == NULL) 715 goto out; 716 /* set command flags */ 717 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 718 719 /* build the command proper */ 720 ac->ac_mailbox.mb_command = AMR_CMD_FLUSH; 721 722 /* we have to poll, as the system may be going down or otherwise damaged */ 723 if (sc->amr_poll_command(ac)) 724 goto out; 725 error = ac->ac_status; 726 727 out: 728 if (ac != NULL) 729 amr_releasecmd(ac); 730 return(error); 731} 732 733/******************************************************************************** 734 * Detect extented cdb >> greater than 10 byte cdb support 735 * returns '1' means this support exist 736 * returns '0' means this support doesn't exist 737 */ 738static int 739amr_support_ext_cdb(struct amr_softc *sc) 740{ 741 struct amr_command *ac; 742 u_int8_t *mbox; 743 int error; 744 745 /* get ourselves a command buffer */ 746 error = 0; 747 if ((ac = amr_alloccmd(sc)) == NULL) 748 goto out; 749 /* set command flags */ 750 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 751 752 /* build the command proper */ 753 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 754 mbox[0] = 0xA4; 755 mbox[2] = 0x16; 756 757 758 /* we have to poll, as the system may be going down or otherwise damaged */ 759 if (sc->amr_poll_command(ac)) 760 goto out; 761 if( ac->ac_status == AMR_STATUS_SUCCESS ) { 762 error = 1; 763 } 764 765out: 766 if (ac != NULL) 767 amr_releasecmd(ac); 768 return(error); 769} 770 771/******************************************************************************** 772 * Try to find I/O work for the controller from one or more of the work queues. 773 * 774 * We make the assumption that if the controller is not ready to take a command 775 * at some given time, it will generate an interrupt at some later time when 776 * it is. 777 */ 778void 779amr_startio(struct amr_softc *sc) 780{ 781 struct amr_command *ac; 782 783 /* spin until something prevents us from doing any work */ 784 for (;;) { 785 786 /* try to get a ready command */ 787 ac = amr_dequeue_ready(sc); 788 789 /* if that failed, build a command from a bio */ 790 if (ac == NULL) 791 (void)amr_bio_command(sc, &ac); 792 793 /* if that failed, build a command from a ccb */ 794 if (ac == NULL) 795 (void)amr_cam_command(sc, &ac); 796 797 /* if we don't have anything to do, give up */ 798 if (ac == NULL) 799 break; 800 801 /* try to give the command to the controller; if this fails save it for later and give up */ 802 if (amr_start(ac)) { 803 debug(2, "controller busy, command deferred"); 804 amr_requeue_ready(ac); /* XXX schedule retry very soon? */ 805 break; 806 } 807 } 808} 809 810/******************************************************************************** 811 * Handle completion of an I/O command. 812 */ 813static void 814amr_completeio(struct amr_command *ac) 815{ 816 struct amr_softc *sc = ac->ac_sc; 817 818 if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */ 819 ac->ac_bio->bio_error = EIO; 820 ac->ac_bio->bio_flags |= BIO_ERROR; 821 822 device_printf(sc->amr_dev, "I/O error - 0x%x\n", ac->ac_status); 823/* amr_printcommand(ac);*/ 824 } 825 amrd_intr(ac->ac_bio); 826 amr_releasecmd(ac); 827} 828 829/******************************************************************************** 830 ******************************************************************************** 831 Command Processing 832 ******************************************************************************** 833 ********************************************************************************/ 834 835/******************************************************************************** 836 * Convert a bio off the top of the bio queue into a command. 837 */ 838static int 839amr_bio_command(struct amr_softc *sc, struct amr_command **acp) 840{ 841 struct amr_command *ac; 842 struct amrd_softc *amrd; 843 struct bio *bio; 844 int error; 845 int blkcount; 846 int driveno; 847 int cmd; 848 849 ac = NULL; 850 error = 0; 851 852 /* get a bio to work on */ 853 if ((bio = amr_dequeue_bio(sc)) == NULL) 854 goto out; 855 856 /* get a command */ 857 if ((ac = amr_alloccmd(sc)) == NULL) { 858 error = ENOMEM; 859 goto out; 860 } 861 862 /* connect the bio to the command */ 863 ac->ac_complete = amr_completeio; 864 ac->ac_bio = bio; 865 ac->ac_data = bio->bio_data; 866 ac->ac_length = bio->bio_bcount; 867 if (BIO_IS_READ(bio)) { 868 ac->ac_flags |= AMR_CMD_DATAIN; 869 cmd = AMR_CMD_LREAD; 870 } else { 871 ac->ac_flags |= AMR_CMD_DATAOUT; 872 cmd = AMR_CMD_LWRITE; 873 } 874 amrd = (struct amrd_softc *)bio->bio_disk->d_drv1; 875 driveno = amrd->amrd_drive - sc->amr_drive; 876 blkcount = (bio->bio_bcount + AMR_BLKSIZE - 1) / AMR_BLKSIZE; 877 878 ac->ac_mailbox.mb_command = cmd; 879 ac->ac_mailbox.mb_blkcount = blkcount; 880 ac->ac_mailbox.mb_lba = bio->bio_pblkno; 881 ac->ac_mailbox.mb_drive = driveno; 882 /* we fill in the s/g related data when the command is mapped */ 883 884 if ((bio->bio_pblkno + blkcount) > sc->amr_drive[driveno].al_size) 885 device_printf(sc->amr_dev, "I/O beyond end of unit (%lld,%d > %lu)\n", 886 (long long)bio->bio_pblkno, blkcount, 887 (u_long)sc->amr_drive[driveno].al_size); 888 889out: 890 if (error != 0) { 891 if (ac != NULL) 892 amr_releasecmd(ac); 893 if (bio != NULL) /* this breaks ordering... */ 894 amr_enqueue_bio(sc, bio); 895 } 896 *acp = ac; 897 return(error); 898} 899 900/******************************************************************************** 901 * Take a command, submit it to the controller and sleep until it completes 902 * or fails. Interrupts must be enabled, returns nonzero on error. 903 */ 904static int 905amr_wait_command(struct amr_command *ac) 906{ 907 int error, count; 908 909 debug_called(1); 910 911 ac->ac_complete = NULL; 912 ac->ac_flags |= AMR_CMD_SLEEP; 913 if ((error = amr_start(ac)) != 0) 914 return(error); 915 916 count = 0; 917 /* XXX better timeout? */ 918 while ((ac->ac_flags & AMR_CMD_BUSY) && (count < 30)) { 919 tsleep(ac, PRIBIO | PCATCH, "amrwcmd", hz); 920 } 921 return(0); 922} 923 924/******************************************************************************** 925 * Take a command, submit it to the controller and busy-wait for it to return. 926 * Returns nonzero on error. Can be safely called with interrupts enabled. 927 */ 928static int 929amr_std_poll_command(struct amr_command *ac) 930{ 931 struct amr_softc *sc = ac->ac_sc; 932 int error, count; 933 934 debug_called(2); 935 936 ac->ac_complete = NULL; 937 if ((error = amr_start(ac)) != 0) 938 return(error); 939 940 count = 0; 941 do { 942 /* 943 * Poll for completion, although the interrupt handler may beat us to it. 944 * Note that the timeout here is somewhat arbitrary. 945 */ 946 amr_done(sc); 947 DELAY(1000); 948 } while ((ac->ac_flags & AMR_CMD_BUSY) && (count++ < 1000)); 949 if (!(ac->ac_flags & AMR_CMD_BUSY)) { 950 error = 0; 951 } else { 952 /* XXX the slot is now marked permanently busy */ 953 error = EIO; 954 device_printf(sc->amr_dev, "polled command timeout\n"); 955 } 956 return(error); 957} 958 959/******************************************************************************** 960 * Take a command, submit it to the controller and busy-wait for it to return. 961 * Returns nonzero on error. Can be safely called with interrupts enabled. 962 */ 963static int 964amr_quartz_poll_command(struct amr_command *ac) 965{ 966 struct amr_softc *sc = ac->ac_sc; 967 int s; 968 int error,count; 969 970 debug_called(2); 971 972 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 973 amr_mapcmd(ac); 974 975 s = splbio(); 976 977 if (sc->amr_state & AMR_STATE_INTEN) { 978 count=0; 979 while (sc->amr_busyslots) { 980 tsleep(sc, PRIBIO | PCATCH, "amrpoll", hz); 981 if(count++>10) { 982 break; 983 } 984 } 985 986 if(sc->amr_busyslots) { 987 device_printf(sc->amr_dev, "adapter is busy\n"); 988 splx(s); 989 amr_unmapcmd(ac); 990 ac->ac_status=0; 991 return(1); 992 } 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 1781int 1782amr_dump_blocks(struct amr_softc *sc, int unit, u_int32_t lba, void *data, int blks) 1783{ 1784 struct amr_command *ac; 1785 int error = EIO; 1786 1787 debug_called(1); 1788 1789 sc->amr_state &= ~AMR_STATE_INTEN; 1790 1791 /* get ourselves a command buffer */ 1792 if ((ac = amr_alloccmd(sc)) == NULL) 1793 goto out; 1794 /* set command flags */ 1795 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 1796 1797 /* point the command at our data */ 1798 ac->ac_data = data; 1799 ac->ac_length = blks * AMR_BLKSIZE; 1800 1801 /* build the command proper */ 1802 ac->ac_mailbox.mb_command = AMR_CMD_LWRITE; 1803 ac->ac_mailbox.mb_blkcount = blks; 1804 ac->ac_mailbox.mb_lba = lba; 1805 ac->ac_mailbox.mb_drive = unit; 1806 1807 /* can't assume that interrupts are going to work here, so play it safe */ 1808 if (sc->amr_poll_command(ac)) 1809 goto out; 1810 error = ac->ac_status; 1811 1812 out: 1813 if (ac != NULL) 1814 amr_releasecmd(ac); 1815 1816 sc->amr_state |= AMR_STATE_INTEN; 1817 return (error); 1818} 1819 1820 1821 1822#ifdef AMR_DEBUG 1823/******************************************************************************** 1824 * Print the command (ac) in human-readable format 1825 */ 1826#if 0 1827static void 1828amr_printcommand(struct amr_command *ac) 1829{ 1830 struct amr_softc *sc = ac->ac_sc; 1831 struct amr_sgentry *sg; 1832 int i; 1833 1834 device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n", 1835 ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive); 1836 device_printf(sc->amr_dev, "blkcount %d lba %d\n", 1837 ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba); 1838 device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length); 1839 device_printf(sc->amr_dev, "sg physaddr %08x nsg %d\n", 1840 ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem); 1841 device_printf(sc->amr_dev, "ccb %p bio %p\n", ac->ac_ccb_data, ac->ac_bio); 1842 1843 /* get base address of s/g table */ 1844 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1845 for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++) 1846 device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count); 1847} 1848#endif 1849#endif 1850