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 * $FreeBSD: src/sys/dev/amr/amr.c,v 1.7.2.13 2003/01/15 13:41:18 emoore Exp $ 56 * $DragonFly: src/sys/dev/raid/amr/amr.c,v 1.8 2004/02/13 01:33:19 joerg Exp $ 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 "amr_compat.h" 69 #include <sys/bus.h> 70 #include <sys/conf.h> 71 #include <sys/devicestat.h> 72 #include <sys/disk.h> 73 #include <sys/stat.h> 74 75 #include <machine/bus_memio.h> 76 #include <machine/bus_pio.h> 77 #include <machine/bus.h> 78 #include <machine/resource.h> 79 #include <sys/rman.h> 80 81 #include <bus/pci/pcireg.h> 82 #include <bus/pci/pcivar.h> 83 84 #include "amrio.h" 85 #include "amrreg.h" 86 #include "amrvar.h" 87 #define AMR_DEFINE_TABLES 88 #include "amr_tables.h" 89 90 #define AMR_CDEV_MAJOR 132 91 92 static d_open_t amr_open; 93 static d_close_t amr_close; 94 static d_ioctl_t amr_ioctl; 95 96 static struct cdevsw amr_cdevsw = { 97 /* name */ "amr", 98 /* maj */ AMR_CDEV_MAJOR, 99 /* flags */ 0, 100 /* port */ NULL, 101 /* autoq */ 0, 102 103 /* open */ amr_open, 104 /* close */ amr_close, 105 /* read */ noread, 106 /* write */ nowrite, 107 /* ioctl */ amr_ioctl, 108 /* poll */ nopoll, 109 /* mmap */ nommap, 110 /* strategy */ nostrategy, 111 /* dump */ nodump, 112 /* psize */ nopsize 113 }; 114 115 /* 116 * Initialisation, bus interface. 117 */ 118 static void amr_startup(void *arg); 119 120 /* 121 * Command wrappers 122 */ 123 static int amr_query_controller(struct amr_softc *sc); 124 static void *amr_enquiry(struct amr_softc *sc, size_t bufsize, 125 u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual); 126 static void amr_completeio(struct amr_command *ac); 127 static int amr_support_ext_cdb(struct amr_softc *sc); 128 129 /* 130 * Command buffer allocation. 131 */ 132 static void amr_alloccmd_cluster(struct amr_softc *sc); 133 static void amr_freecmd_cluster(struct amr_command_cluster *acc); 134 135 /* 136 * Command processing. 137 */ 138 static int amr_bio_command(struct amr_softc *sc, struct amr_command **acp); 139 static int amr_wait_command(struct amr_command *ac); 140 static int amr_getslot(struct amr_command *ac); 141 static void amr_mapcmd(struct amr_command *ac); 142 static void amr_unmapcmd(struct amr_command *ac); 143 static int amr_start(struct amr_command *ac); 144 static void amr_complete(void *context, int pending); 145 146 /* 147 * Status monitoring 148 */ 149 static void amr_periodic(void *data); 150 151 /* 152 * Interface-specific shims 153 */ 154 static int amr_quartz_submit_command(struct amr_softc *sc); 155 static int amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 156 static int amr_quartz_poll_command(struct amr_command *ac); 157 158 static int amr_std_submit_command(struct amr_softc *sc); 159 static int amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 160 static int amr_std_poll_command(struct amr_command *ac); 161 static void amr_std_attach_mailbox(struct amr_softc *sc); 162 163 #ifdef AMR_BOARD_INIT 164 static int amr_quartz_init(struct amr_softc *sc); 165 static int amr_std_init(struct amr_softc *sc); 166 #endif 167 168 /* 169 * Debugging 170 */ 171 static void amr_describe_controller(struct amr_softc *sc); 172 #ifdef AMR_DEBUG 173 #if 0 174 static void amr_printcommand(struct amr_command *ac); 175 #endif 176 #endif 177 178 DECLARE_DUMMY_MODULE(amr); 179 180 /******************************************************************************** 181 ******************************************************************************** 182 Inline Glue 183 ******************************************************************************** 184 ********************************************************************************/ 185 186 /******************************************************************************** 187 ******************************************************************************** 188 Public Interfaces 189 ******************************************************************************** 190 ********************************************************************************/ 191 192 /******************************************************************************** 193 * Initialise the controller and softc. 194 */ 195 int 196 amr_attach(struct amr_softc *sc) 197 { 198 199 debug_called(1); 200 201 /* 202 * Initialise per-controller queues. 203 */ 204 TAILQ_INIT(&sc->amr_completed); 205 TAILQ_INIT(&sc->amr_freecmds); 206 TAILQ_INIT(&sc->amr_cmd_clusters); 207 TAILQ_INIT(&sc->amr_ready); 208 bioq_init(&sc->amr_bioq); 209 210 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 211 /* 212 * Initialise command-completion task. 213 */ 214 TASK_INIT(&sc->amr_task_complete, 0, amr_complete, sc); 215 #endif 216 217 debug(2, "queue init done"); 218 219 /* 220 * Configure for this controller type. 221 */ 222 if (AMR_IS_QUARTZ(sc)) { 223 sc->amr_submit_command = amr_quartz_submit_command; 224 sc->amr_get_work = amr_quartz_get_work; 225 sc->amr_poll_command = amr_quartz_poll_command; 226 } else { 227 sc->amr_submit_command = amr_std_submit_command; 228 sc->amr_get_work = amr_std_get_work; 229 sc->amr_poll_command = amr_std_poll_command; 230 amr_std_attach_mailbox(sc);; 231 } 232 233 #ifdef AMR_BOARD_INIT 234 if ((AMR_IS_QUARTZ(sc) ? amr_quartz_init(sc) : amr_std_init(sc)))) 235 return(ENXIO); 236 #endif 237 238 /* 239 * Quiz controller for features and limits. 240 */ 241 if (amr_query_controller(sc)) 242 return(ENXIO); 243 244 debug(2, "controller query complete"); 245 246 /* 247 * Attach our 'real' SCSI channels to CAM. 248 */ 249 if (amr_cam_attach(sc)) 250 return(ENXIO); 251 debug(2, "CAM attach done"); 252 253 /* 254 * Create the control device. 255 */ 256 sc->amr_dev_t = make_dev(&amr_cdevsw, device_get_unit(sc->amr_dev), UID_ROOT, GID_OPERATOR, 257 S_IRUSR | S_IWUSR, "amr%d", device_get_unit(sc->amr_dev)); 258 sc->amr_dev_t->si_drv1 = sc; 259 260 /* 261 * Schedule ourselves to bring the controller up once interrupts are 262 * available. 263 */ 264 bzero(&sc->amr_ich, sizeof(struct intr_config_hook)); 265 sc->amr_ich.ich_func = amr_startup; 266 sc->amr_ich.ich_arg = sc; 267 if (config_intrhook_establish(&sc->amr_ich) != 0) { 268 device_printf(sc->amr_dev, "can't establish configuration hook\n"); 269 return(ENOMEM); 270 } 271 272 /* 273 * Print a little information about the controller. 274 */ 275 amr_describe_controller(sc); 276 277 debug(2, "attach complete"); 278 return(0); 279 } 280 281 /******************************************************************************** 282 * Locate disk resources and attach children to them. 283 */ 284 static void 285 amr_startup(void *arg) 286 { 287 struct amr_softc *sc = (struct amr_softc *)arg; 288 struct amr_logdrive *dr; 289 int i, error; 290 291 debug_called(1); 292 293 /* pull ourselves off the intrhook chain */ 294 config_intrhook_disestablish(&sc->amr_ich); 295 296 /* get up-to-date drive information */ 297 if (amr_query_controller(sc)) { 298 device_printf(sc->amr_dev, "can't scan controller for drives\n"); 299 return; 300 } 301 302 /* iterate over available drives */ 303 for (i = 0, dr = &sc->amr_drive[0]; (i < AMR_MAXLD) && (dr->al_size != 0xffffffff); i++, dr++) { 304 /* are we already attached to this drive? */ 305 if (dr->al_disk == 0) { 306 /* generate geometry information */ 307 if (dr->al_size > 0x200000) { /* extended translation? */ 308 dr->al_heads = 255; 309 dr->al_sectors = 63; 310 } else { 311 dr->al_heads = 64; 312 dr->al_sectors = 32; 313 } 314 dr->al_cylinders = dr->al_size / (dr->al_heads * dr->al_sectors); 315 316 dr->al_disk = device_add_child(sc->amr_dev, NULL, -1); 317 if (dr->al_disk == 0) 318 device_printf(sc->amr_dev, "device_add_child failed\n"); 319 device_set_ivars(dr->al_disk, dr); 320 } 321 } 322 323 if ((error = bus_generic_attach(sc->amr_dev)) != 0) 324 device_printf(sc->amr_dev, "bus_generic_attach returned %d\n", error); 325 326 /* mark controller back up */ 327 sc->amr_state &= ~AMR_STATE_SHUTDOWN; 328 329 /* interrupts will be enabled before we do anything more */ 330 sc->amr_state |= AMR_STATE_INTEN; 331 332 /* 333 * Start the timeout routine. 334 */ 335 /* sc->amr_timeout = timeout(amr_periodic, sc, hz);*/ 336 337 return; 338 } 339 340 /******************************************************************************* 341 * Free resources associated with a controller instance 342 */ 343 void 344 amr_free(struct amr_softc *sc) 345 { 346 struct amr_command_cluster *acc; 347 348 /* detach from CAM */ 349 amr_cam_detach(sc); 350 351 /* cancel status timeout */ 352 untimeout(amr_periodic, sc, sc->amr_timeout); 353 354 /* throw away any command buffers */ 355 while ((acc = TAILQ_FIRST(&sc->amr_cmd_clusters)) != NULL) { 356 TAILQ_REMOVE(&sc->amr_cmd_clusters, acc, acc_link); 357 amr_freecmd_cluster(acc); 358 } 359 360 /* destroy control device */ 361 if( sc->amr_dev_t != (dev_t)NULL) 362 destroy_dev(sc->amr_dev_t); 363 } 364 365 /******************************************************************************* 366 * Receive a bio structure from a child device and queue it on a particular 367 * disk resource, then poke the disk resource to start as much work as it can. 368 */ 369 int 370 amr_submit_bio(struct amr_softc *sc, struct bio *bio) 371 { 372 debug_called(2); 373 374 amr_enqueue_bio(sc, bio); 375 amr_startio(sc); 376 return(0); 377 } 378 379 /******************************************************************************** 380 * Accept an open operation on the control device. 381 */ 382 static int 383 amr_open(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 * Accept the last close on the control device. 396 */ 397 static int 398 amr_close(dev_t dev, int flags, int fmt, d_thread_t *td) 399 { 400 int unit = minor(dev); 401 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 402 403 debug_called(1); 404 405 sc->amr_state &= ~AMR_STATE_OPEN; 406 return (0); 407 } 408 409 /******************************************************************************** 410 * Handle controller-specific control operations. 411 */ 412 static int 413 amr_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *td) 414 { 415 struct amr_softc *sc = (struct amr_softc *)dev->si_drv1; 416 int *arg = (int *)addr; 417 struct amr_user_ioctl *au = (struct amr_user_ioctl *)addr; 418 struct amr_command *ac; 419 struct amr_mailbox_ioctl *mbi; 420 struct amr_passthrough *ap; 421 void *dp; 422 int error; 423 424 debug_called(1); 425 426 error = 0; 427 dp = NULL; 428 ap = NULL; 429 ac = NULL; 430 switch(cmd) { 431 432 case AMR_IO_VERSION: 433 debug(1, "AMR_IO_VERSION"); 434 *arg = AMR_IO_VERSION_NUMBER; 435 break; 436 437 case AMR_IO_COMMAND: 438 debug(1, "AMR_IO_COMMAND 0x%x", au->au_cmd[0]); 439 /* handle inbound data buffer */ 440 if (au->au_length != 0) { 441 if ((dp = malloc(au->au_length, M_DEVBUF, M_WAITOK)) == NULL) { 442 error = ENOMEM; 443 break; 444 } 445 if ((error = copyin(au->au_buffer, dp, au->au_length)) != 0) 446 break; 447 debug(2, "copyin %ld bytes from %p -> %p", au->au_length, au->au_buffer, dp); 448 } 449 450 if ((ac = amr_alloccmd(sc)) == NULL) { 451 error = ENOMEM; 452 break; 453 } 454 455 /* handle SCSI passthrough command */ 456 if (au->au_cmd[0] == AMR_CMD_PASS) { 457 if ((ap = malloc(sizeof(*ap), M_DEVBUF, M_WAITOK | M_ZERO)) == NULL) { 458 error = ENOMEM; 459 break; 460 } 461 462 /* copy cdb */ 463 ap->ap_cdb_length = au->au_cmd[2]; 464 bcopy(&au->au_cmd[3], &ap->ap_cdb[0], ap->ap_cdb_length); 465 466 /* build passthrough */ 467 ap->ap_timeout = au->au_cmd[ap->ap_cdb_length + 3] & 0x07; 468 ap->ap_ars = (au->au_cmd[ap->ap_cdb_length + 3] & 0x08) ? 1 : 0; 469 ap->ap_islogical = (au->au_cmd[ap->ap_cdb_length + 3] & 0x80) ? 1 : 0; 470 ap->ap_logical_drive_no = au->au_cmd[ap->ap_cdb_length + 4]; 471 ap->ap_channel = au->au_cmd[ap->ap_cdb_length + 5]; 472 ap->ap_scsi_id = au->au_cmd[ap->ap_cdb_length + 6]; 473 ap->ap_request_sense_length = 14; 474 ap->ap_data_transfer_length = au->au_length; 475 /* XXX what about the request-sense area? does the caller want it? */ 476 477 /* build command */ 478 ac->ac_data = ap; 479 ac->ac_length = sizeof(*ap); 480 ac->ac_flags |= AMR_CMD_DATAOUT; 481 ac->ac_ccb_data = dp; 482 ac->ac_ccb_length = au->au_length; 483 if (au->au_direction & AMR_IO_READ) 484 ac->ac_flags |= AMR_CMD_CCB_DATAIN; 485 if (au->au_direction & AMR_IO_WRITE) 486 ac->ac_flags |= AMR_CMD_CCB_DATAOUT; 487 488 ac->ac_mailbox.mb_command = AMR_CMD_PASS; 489 490 } else { 491 /* direct command to controller */ 492 mbi = (struct amr_mailbox_ioctl *)&ac->ac_mailbox; 493 494 /* copy pertinent mailbox items */ 495 mbi->mb_command = au->au_cmd[0]; 496 mbi->mb_channel = au->au_cmd[1]; 497 mbi->mb_param = au->au_cmd[2]; 498 mbi->mb_pad[0] = au->au_cmd[3]; 499 mbi->mb_drive = au->au_cmd[4]; 500 501 /* build the command */ 502 ac->ac_data = dp; 503 ac->ac_length = au->au_length; 504 if (au->au_direction & AMR_IO_READ) 505 ac->ac_flags |= AMR_CMD_DATAIN; 506 if (au->au_direction & AMR_IO_WRITE) 507 ac->ac_flags |= AMR_CMD_DATAOUT; 508 } 509 510 /* run the command */ 511 if ((error = amr_wait_command(ac)) != 0) 512 break; 513 514 /* copy out data and set status */ 515 if (au->au_length != 0) 516 error = copyout(dp, au->au_buffer, au->au_length); 517 debug(2, "copyout %ld bytes from %p -> %p", au->au_length, dp, au->au_buffer); 518 if (dp != NULL) 519 debug(2, "%16d", (int)dp); 520 au->au_status = ac->ac_status; 521 break; 522 523 default: 524 debug(1, "unknown ioctl 0x%lx", cmd); 525 error = ENOIOCTL; 526 break; 527 } 528 529 if (dp != NULL) 530 free(dp, M_DEVBUF); 531 if (ap != NULL) 532 free(ap, M_DEVBUF); 533 if (ac != NULL) 534 amr_releasecmd(ac); 535 return(error); 536 } 537 538 /******************************************************************************** 539 ******************************************************************************** 540 Status Monitoring 541 ******************************************************************************** 542 ********************************************************************************/ 543 544 /******************************************************************************** 545 * Perform a periodic check of the controller status 546 */ 547 static void 548 amr_periodic(void *data) 549 { 550 struct amr_softc *sc = (struct amr_softc *)data; 551 552 debug_called(2); 553 554 /* XXX perform periodic status checks here */ 555 556 /* compensate for missed interrupts */ 557 amr_done(sc); 558 559 /* reschedule */ 560 sc->amr_timeout = timeout(amr_periodic, sc, hz); 561 } 562 563 /******************************************************************************** 564 ******************************************************************************** 565 Command Wrappers 566 ******************************************************************************** 567 ********************************************************************************/ 568 569 /******************************************************************************** 570 * Interrogate the controller for the operational parameters we require. 571 */ 572 static int 573 amr_query_controller(struct amr_softc *sc) 574 { 575 struct amr_enquiry3 *aex; 576 struct amr_prodinfo *ap; 577 struct amr_enquiry *ae; 578 int ldrv; 579 580 /* 581 * If we haven't found the real limit yet, let us have a couple of commands in 582 * order to be able to probe. 583 */ 584 if (sc->amr_maxio == 0) 585 sc->amr_maxio = 2; 586 587 /* 588 * Greater than 10 byte cdb support 589 */ 590 sc->support_ext_cdb = amr_support_ext_cdb(sc); 591 592 if(sc->support_ext_cdb) { 593 debug(2,"supports extended CDBs."); 594 } 595 596 /* 597 * Try to issue an ENQUIRY3 command 598 */ 599 if ((aex = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_ENQ3, 600 AMR_CONFIG_ENQ3_SOLICITED_FULL)) != NULL) { 601 602 /* 603 * Fetch current state of logical drives. 604 */ 605 for (ldrv = 0; ldrv < aex->ae_numldrives; ldrv++) { 606 sc->amr_drive[ldrv].al_size = aex->ae_drivesize[ldrv]; 607 sc->amr_drive[ldrv].al_state = aex->ae_drivestate[ldrv]; 608 sc->amr_drive[ldrv].al_properties = aex->ae_driveprop[ldrv]; 609 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 610 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 611 } 612 free(aex, M_DEVBUF); 613 614 /* 615 * Get product info for channel count. 616 */ 617 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) == NULL) { 618 device_printf(sc->amr_dev, "can't obtain product data from controller\n"); 619 return(1); 620 } 621 sc->amr_maxdrives = 40; 622 sc->amr_maxchan = ap->ap_nschan; 623 sc->amr_maxio = ap->ap_maxio; 624 sc->amr_type |= AMR_TYPE_40LD; 625 free(ap, M_DEVBUF); 626 627 } else { 628 629 /* failed, try the 8LD ENQUIRY commands */ 630 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) == NULL) { 631 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) == NULL) { 632 device_printf(sc->amr_dev, "can't obtain configuration data from controller\n"); 633 return(1); 634 } 635 ae->ae_signature = 0; 636 } 637 638 /* 639 * Fetch current state of logical drives. 640 */ 641 for (ldrv = 0; ldrv < ae->ae_ldrv.al_numdrives; ldrv++) { 642 sc->amr_drive[ldrv].al_size = ae->ae_ldrv.al_size[ldrv]; 643 sc->amr_drive[ldrv].al_state = ae->ae_ldrv.al_state[ldrv]; 644 sc->amr_drive[ldrv].al_properties = ae->ae_ldrv.al_properties[ldrv]; 645 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 646 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 647 } 648 649 sc->amr_maxdrives = 8; 650 sc->amr_maxchan = ae->ae_adapter.aa_channels; 651 sc->amr_maxio = ae->ae_adapter.aa_maxio; 652 free(ae, M_DEVBUF); 653 } 654 655 /* 656 * Mark remaining drives as unused. 657 */ 658 for (; ldrv < AMR_MAXLD; ldrv++) 659 sc->amr_drive[ldrv].al_size = 0xffffffff; 660 661 /* 662 * Cap the maximum number of outstanding I/Os. AMI's Linux driver doesn't trust 663 * the controller's reported value, and lockups have been seen when we do. 664 */ 665 sc->amr_maxio = imin(sc->amr_maxio, AMR_LIMITCMD); 666 667 return(0); 668 } 669 670 /******************************************************************************** 671 * Run a generic enquiry-style command. 672 */ 673 static void * 674 amr_enquiry(struct amr_softc *sc, size_t bufsize, u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual) 675 { 676 struct amr_command *ac; 677 void *result; 678 u_int8_t *mbox; 679 int error; 680 681 debug_called(1); 682 683 error = 1; 684 result = NULL; 685 686 /* get ourselves a command buffer */ 687 if ((ac = amr_alloccmd(sc)) == NULL) 688 goto out; 689 /* allocate the response structure */ 690 if ((result = malloc(bufsize, M_DEVBUF, M_NOWAIT)) == NULL) 691 goto out; 692 /* set command flags */ 693 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 694 695 /* point the command at our data */ 696 ac->ac_data = result; 697 ac->ac_length = bufsize; 698 699 /* build the command proper */ 700 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 701 mbox[0] = cmd; 702 mbox[2] = cmdsub; 703 mbox[3] = cmdqual; 704 705 /* can't assume that interrupts are going to work here, so play it safe */ 706 if (sc->amr_poll_command(ac)) 707 goto out; 708 error = ac->ac_status; 709 710 out: 711 if (ac != NULL) 712 amr_releasecmd(ac); 713 if ((error != 0) && (result != NULL)) { 714 free(result, M_DEVBUF); 715 result = NULL; 716 } 717 return(result); 718 } 719 720 /******************************************************************************** 721 * Flush the controller's internal cache, return status. 722 */ 723 int 724 amr_flush(struct amr_softc *sc) 725 { 726 struct amr_command *ac; 727 int error; 728 729 /* get ourselves a command buffer */ 730 error = 1; 731 if ((ac = amr_alloccmd(sc)) == NULL) 732 goto out; 733 /* set command flags */ 734 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 735 736 /* build the command proper */ 737 ac->ac_mailbox.mb_command = AMR_CMD_FLUSH; 738 739 /* we have to poll, as the system may be going down or otherwise damaged */ 740 if (sc->amr_poll_command(ac)) 741 goto out; 742 error = ac->ac_status; 743 744 out: 745 if (ac != NULL) 746 amr_releasecmd(ac); 747 return(error); 748 } 749 750 /******************************************************************************** 751 * Detect extented cdb >> greater than 10 byte cdb support 752 * returns '1' means this support exist 753 * returns '0' means this support doesn't exist 754 */ 755 static int 756 amr_support_ext_cdb(struct amr_softc *sc) 757 { 758 struct amr_command *ac; 759 u_int8_t *mbox; 760 int error; 761 762 /* get ourselves a command buffer */ 763 error = 0; 764 if ((ac = amr_alloccmd(sc)) == NULL) 765 goto out; 766 /* set command flags */ 767 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 768 769 /* build the command proper */ 770 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 771 mbox[0] = 0xA4; 772 mbox[2] = 0x16; 773 774 775 /* we have to poll, as the system may be going down or otherwise damaged */ 776 if (sc->amr_poll_command(ac)) 777 goto out; 778 if( ac->ac_status == AMR_STATUS_SUCCESS ) { 779 error = 1; 780 } 781 782 out: 783 if (ac != NULL) 784 amr_releasecmd(ac); 785 return(error); 786 } 787 788 /******************************************************************************** 789 * Try to find I/O work for the controller from one or more of the work queues. 790 * 791 * We make the assumption that if the controller is not ready to take a command 792 * at some given time, it will generate an interrupt at some later time when 793 * it is. 794 */ 795 void 796 amr_startio(struct amr_softc *sc) 797 { 798 struct amr_command *ac; 799 800 /* spin until something prevents us from doing any work */ 801 for (;;) { 802 803 /* try to get a ready command */ 804 ac = amr_dequeue_ready(sc); 805 806 /* if that failed, build a command from a bio */ 807 if (ac == NULL) 808 (void)amr_bio_command(sc, &ac); 809 810 /* if that failed, build a command from a ccb */ 811 if (ac == NULL) 812 (void)amr_cam_command(sc, &ac); 813 814 /* if we don't have anything to do, give up */ 815 if (ac == NULL) 816 break; 817 818 /* try to give the command to the controller; if this fails save it for later and give up */ 819 if (amr_start(ac)) { 820 debug(2, "controller busy, command deferred"); 821 amr_requeue_ready(ac); /* XXX schedule retry very soon? */ 822 break; 823 } 824 } 825 } 826 827 /******************************************************************************** 828 * Handle completion of an I/O command. 829 */ 830 static void 831 amr_completeio(struct amr_command *ac) 832 { 833 struct amr_softc *sc = ac->ac_sc; 834 835 if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */ 836 ac->ac_bio->bio_error = EIO; 837 ac->ac_bio->bio_flags |= BIO_ERROR; 838 839 device_printf(sc->amr_dev, "I/O error - 0x%x\n", ac->ac_status); 840 /* amr_printcommand(ac);*/ 841 } 842 amrd_intr(ac->ac_bio); 843 amr_releasecmd(ac); 844 } 845 846 /******************************************************************************** 847 ******************************************************************************** 848 Command Processing 849 ******************************************************************************** 850 ********************************************************************************/ 851 852 /******************************************************************************** 853 * Convert a bio off the top of the bio queue into a command. 854 */ 855 static int 856 amr_bio_command(struct amr_softc *sc, struct amr_command **acp) 857 { 858 struct amr_command *ac; 859 struct amrd_softc *amrd; 860 struct bio *bio; 861 int error; 862 int blkcount; 863 int driveno; 864 int cmd; 865 866 ac = NULL; 867 error = 0; 868 869 /* get a bio to work on */ 870 if ((bio = amr_dequeue_bio(sc)) == NULL) 871 goto out; 872 873 /* get a command */ 874 if ((ac = amr_alloccmd(sc)) == NULL) { 875 error = ENOMEM; 876 goto out; 877 } 878 879 /* connect the bio to the command */ 880 ac->ac_complete = amr_completeio; 881 ac->ac_bio = bio; 882 ac->ac_data = bio->bio_data; 883 ac->ac_length = bio->bio_bcount; 884 if (BIO_IS_READ(bio)) { 885 ac->ac_flags |= AMR_CMD_DATAIN; 886 cmd = AMR_CMD_LREAD; 887 } else { 888 ac->ac_flags |= AMR_CMD_DATAOUT; 889 cmd = AMR_CMD_LWRITE; 890 } 891 amrd = (struct amrd_softc *)bio->bio_dev->si_drv1; 892 driveno = amrd->amrd_drive - sc->amr_drive; 893 blkcount = (bio->bio_bcount + AMR_BLKSIZE - 1) / AMR_BLKSIZE; 894 895 ac->ac_mailbox.mb_command = cmd; 896 ac->ac_mailbox.mb_blkcount = blkcount; 897 ac->ac_mailbox.mb_lba = bio->bio_pblkno; 898 ac->ac_mailbox.mb_drive = driveno; 899 /* we fill in the s/g related data when the command is mapped */ 900 901 if ((bio->bio_pblkno + blkcount) > sc->amr_drive[driveno].al_size) 902 device_printf(sc->amr_dev, "I/O beyond end of unit (%lld,%d > %lu)\n", 903 (long long)bio->bio_pblkno, blkcount, 904 (u_long)sc->amr_drive[driveno].al_size); 905 906 out: 907 if (error != 0) { 908 if (ac != NULL) 909 amr_releasecmd(ac); 910 if (bio != NULL) /* this breaks ordering... */ 911 amr_enqueue_bio(sc, bio); 912 } 913 *acp = ac; 914 return(error); 915 } 916 917 /******************************************************************************** 918 * Take a command, submit it to the controller and sleep until it completes 919 * or fails. Interrupts must be enabled, returns nonzero on error. 920 */ 921 static int 922 amr_wait_command(struct amr_command *ac) 923 { 924 int error, count; 925 926 debug_called(1); 927 928 ac->ac_complete = NULL; 929 ac->ac_flags |= AMR_CMD_SLEEP; 930 if ((error = amr_start(ac)) != 0) 931 return(error); 932 933 count = 0; 934 /* XXX better timeout? */ 935 while ((ac->ac_flags & AMR_CMD_BUSY) && (count < 30)) { 936 tsleep(ac, PCATCH, "amrwcmd", hz); 937 } 938 return(0); 939 } 940 941 /******************************************************************************** 942 * Take a command, submit it to the controller and busy-wait for it to return. 943 * Returns nonzero on error. Can be safely called with interrupts enabled. 944 */ 945 static int 946 amr_std_poll_command(struct amr_command *ac) 947 { 948 struct amr_softc *sc = ac->ac_sc; 949 int error, count; 950 951 debug_called(2); 952 953 ac->ac_complete = NULL; 954 if ((error = amr_start(ac)) != 0) 955 return(error); 956 957 count = 0; 958 do { 959 /* 960 * Poll for completion, although the interrupt handler may beat us to it. 961 * Note that the timeout here is somewhat arbitrary. 962 */ 963 amr_done(sc); 964 DELAY(1000); 965 } while ((ac->ac_flags & AMR_CMD_BUSY) && (count++ < 1000)); 966 if (!(ac->ac_flags & AMR_CMD_BUSY)) { 967 error = 0; 968 } else { 969 /* XXX the slot is now marked permanently busy */ 970 error = EIO; 971 device_printf(sc->amr_dev, "polled command timeout\n"); 972 } 973 return(error); 974 } 975 976 /******************************************************************************** 977 * Take a command, submit it to the controller and busy-wait for it to return. 978 * Returns nonzero on error. Can be safely called with interrupts enabled. 979 */ 980 static int 981 amr_quartz_poll_command(struct amr_command *ac) 982 { 983 struct amr_softc *sc = ac->ac_sc; 984 int s; 985 int error,count; 986 987 debug_called(2); 988 989 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 990 amr_mapcmd(ac); 991 992 s = splbio(); 993 994 if (sc->amr_state & AMR_STATE_INTEN) { 995 count=0; 996 while (sc->amr_busyslots) { 997 tsleep(sc, PCATCH, "amrpoll", hz); 998 if(count++>10) { 999 break; 1000 } 1001 } 1002 1003 if(sc->amr_busyslots) { 1004 device_printf(sc->amr_dev, "adapter is busy\n"); 1005 splx(s); 1006 amr_unmapcmd(ac); 1007 ac->ac_status=0; 1008 return(1); 1009 } 1010 } 1011 1012 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 1013 1014 /* clear the poll/ack fields in the mailbox */ 1015 sc->amr_mailbox->mb_ident = 0xFE; 1016 sc->amr_mailbox->mb_nstatus = 0xFF; 1017 sc->amr_mailbox->mb_status = 0xFF; 1018 sc->amr_mailbox->mb_poll = 0; 1019 sc->amr_mailbox->mb_ack = 0; 1020 sc->amr_mailbox->mb_busy = 1; 1021 1022 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1023 1024 while(sc->amr_mailbox->mb_nstatus == 0xFF); 1025 while(sc->amr_mailbox->mb_status == 0xFF); 1026 ac->ac_status=sc->amr_mailbox->mb_status; 1027 error = (ac->ac_status !=AMR_STATUS_SUCCESS) ? 1:0; 1028 while(sc->amr_mailbox->mb_poll != 0x77); 1029 sc->amr_mailbox->mb_poll = 0; 1030 sc->amr_mailbox->mb_ack = 0x77; 1031 1032 /* acknowledge that we have the commands */ 1033 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1034 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK); 1035 1036 splx(s); 1037 1038 /* unmap the command's data buffer */ 1039 amr_unmapcmd(ac); 1040 1041 return(error); 1042 } 1043 1044 /******************************************************************************** 1045 * Get a free command slot for a command if it doesn't already have one. 1046 * 1047 * May be safely called multiple times for a given command. 1048 */ 1049 static int 1050 amr_getslot(struct amr_command *ac) 1051 { 1052 struct amr_softc *sc = ac->ac_sc; 1053 int s, slot, limit, error; 1054 1055 debug_called(3); 1056 1057 /* if the command already has a slot, don't try to give it another one */ 1058 if (ac->ac_slot != 0) 1059 return(0); 1060 1061 /* enforce slot usage limit */ 1062 limit = (ac->ac_flags & AMR_CMD_PRIORITY) ? sc->amr_maxio : sc->amr_maxio - 4; 1063 if (sc->amr_busyslots > limit) 1064 return(EBUSY); 1065 1066 /* 1067 * Allocate a slot. XXX linear scan is slow 1068 */ 1069 error = EBUSY; 1070 s = splbio(); 1071 for (slot = 0; slot < sc->amr_maxio; slot++) { 1072 if (sc->amr_busycmd[slot] == NULL) { 1073 sc->amr_busycmd[slot] = ac; 1074 sc->amr_busyslots++; 1075 ac->ac_slot = slot; 1076 error = 0; 1077 break; 1078 } 1079 } 1080 splx(s); 1081 1082 return(error); 1083 } 1084 1085 /******************************************************************************** 1086 * Map/unmap (ac)'s data in the controller's addressable space as required. 1087 * 1088 * These functions may be safely called multiple times on a given command. 1089 */ 1090 static void 1091 amr_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1092 { 1093 struct amr_command *ac = (struct amr_command *)arg; 1094 struct amr_softc *sc = ac->ac_sc; 1095 struct amr_sgentry *sg; 1096 int i; 1097 u_int8_t *sgc; 1098 1099 debug_called(3); 1100 1101 /* get base address of s/g table */ 1102 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1103 1104 /* save data physical address */ 1105 ac->ac_dataphys = segs[0].ds_addr; 1106 1107 /* for AMR_CMD_CONFIG the s/g count goes elsewhere */ 1108 if (ac->ac_mailbox.mb_command == AMR_CMD_CONFIG) { 1109 sgc = &(((struct amr_mailbox_ioctl *)&ac->ac_mailbox)->mb_param); 1110 } else { 1111 sgc = &ac->ac_mailbox.mb_nsgelem; 1112 } 1113 1114 /* decide whether we need to populate the s/g table */ 1115 if (nsegments < 2) { 1116 *sgc = 0; 1117 ac->ac_mailbox.mb_nsgelem = 0; 1118 ac->ac_mailbox.mb_physaddr = ac->ac_dataphys; 1119 } else { 1120 ac->ac_mailbox.mb_nsgelem = nsegments; 1121 *sgc = nsegments; 1122 ac->ac_mailbox.mb_physaddr = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1123 for (i = 0; i < nsegments; i++, sg++) { 1124 sg->sg_addr = segs[i].ds_addr; 1125 sg->sg_count = segs[i].ds_len; 1126 } 1127 } 1128 } 1129 1130 static void 1131 amr_setup_ccbmap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1132 { 1133 struct amr_command *ac = (struct amr_command *)arg; 1134 struct amr_softc *sc = ac->ac_sc; 1135 struct amr_sgentry *sg; 1136 struct amr_passthrough *ap = (struct amr_passthrough *)ac->ac_data; 1137 struct amr_ext_passthrough *aep = (struct amr_ext_passthrough *)ac->ac_data; 1138 int i; 1139 1140 /* get base address of s/g table */ 1141 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1142 1143 /* decide whether we need to populate the s/g table */ 1144 if( ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS ) { 1145 if (nsegments < 2) { 1146 aep->ap_no_sg_elements = 0; 1147 aep->ap_data_transfer_address = segs[0].ds_addr; 1148 } else { 1149 /* save s/g table information in passthrough */ 1150 aep->ap_no_sg_elements = nsegments; 1151 aep->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 aep->ap_no_sg_elements, aep->ap_data_transfer_address, ac->ac_dataphys); 1161 } else { 1162 if (nsegments < 2) { 1163 ap->ap_no_sg_elements = 0; 1164 ap->ap_data_transfer_address = segs[0].ds_addr; 1165 } else { 1166 /* save s/g table information in passthrough */ 1167 ap->ap_no_sg_elements = nsegments; 1168 ap->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1169 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1170 for (i = 0; i < nsegments; i++, sg++) { 1171 sg->sg_addr = segs[i].ds_addr; 1172 sg->sg_count = segs[i].ds_len; 1173 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1174 } 1175 } 1176 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1177 ap->ap_no_sg_elements, ap->ap_data_transfer_address, ac->ac_dataphys); 1178 } 1179 } 1180 1181 static void 1182 amr_mapcmd(struct amr_command *ac) 1183 { 1184 struct amr_softc *sc = ac->ac_sc; 1185 1186 debug_called(3); 1187 1188 /* if the command involves data at all, and hasn't been mapped */ 1189 if (!(ac->ac_flags & AMR_CMD_MAPPED)) { 1190 1191 if (ac->ac_data != NULL) { 1192 /* map the data buffers into bus space and build the s/g list */ 1193 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_dmamap, ac->ac_data, ac->ac_length, 1194 amr_setup_dmamap, ac, 0); 1195 if (ac->ac_flags & AMR_CMD_DATAIN) 1196 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREREAD); 1197 if (ac->ac_flags & AMR_CMD_DATAOUT) 1198 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREWRITE); 1199 } 1200 1201 if (ac->ac_ccb_data != NULL) { 1202 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, ac->ac_ccb_data, ac->ac_ccb_length, 1203 amr_setup_ccbmap, ac, 0); 1204 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1205 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREREAD); 1206 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1207 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREWRITE); 1208 } 1209 ac->ac_flags |= AMR_CMD_MAPPED; 1210 } 1211 } 1212 1213 static void 1214 amr_unmapcmd(struct amr_command *ac) 1215 { 1216 struct amr_softc *sc = ac->ac_sc; 1217 1218 debug_called(3); 1219 1220 /* if the command involved data at all and was mapped */ 1221 if (ac->ac_flags & AMR_CMD_MAPPED) { 1222 1223 if (ac->ac_data != NULL) { 1224 if (ac->ac_flags & AMR_CMD_DATAIN) 1225 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTREAD); 1226 if (ac->ac_flags & AMR_CMD_DATAOUT) 1227 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE); 1228 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap); 1229 } 1230 1231 if (ac->ac_ccb_data != NULL) { 1232 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1233 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTREAD); 1234 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1235 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTWRITE); 1236 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_ccb_dmamap); 1237 } 1238 ac->ac_flags &= ~AMR_CMD_MAPPED; 1239 } 1240 } 1241 1242 /******************************************************************************** 1243 * Take a command and give it to the controller, returns 0 if successful, or 1244 * EBUSY if the command should be retried later. 1245 */ 1246 static int 1247 amr_start(struct amr_command *ac) 1248 { 1249 struct amr_softc *sc = ac->ac_sc; 1250 int done, s, i; 1251 1252 debug_called(3); 1253 1254 /* mark command as busy so that polling consumer can tell */ 1255 ac->ac_flags |= AMR_CMD_BUSY; 1256 1257 /* get a command slot (freed in amr_done) */ 1258 if (amr_getslot(ac)) 1259 return(EBUSY); 1260 1261 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 1262 amr_mapcmd(ac); 1263 1264 /* mark the new mailbox we are going to copy in as busy */ 1265 ac->ac_mailbox.mb_busy = 1; 1266 1267 /* clear the poll/ack fields in the mailbox */ 1268 sc->amr_mailbox->mb_poll = 0; 1269 sc->amr_mailbox->mb_ack = 0; 1270 1271 /* 1272 * Save the slot number so that we can locate this command when complete. 1273 * Note that ident = 0 seems to be special, so we don't use it. 1274 */ 1275 ac->ac_mailbox.mb_ident = ac->ac_slot + 1; 1276 1277 /* 1278 * Spin waiting for the mailbox, give up after ~1 second. We expect the 1279 * controller to be able to handle our I/O. 1280 * 1281 * XXX perhaps we should wait for less time, and count on the deferred command 1282 * handling to deal with retries? 1283 */ 1284 debug(4, "wait for mailbox"); 1285 for (i = 10000, done = 0; (i > 0) && !done; i--) { 1286 s = splbio(); 1287 1288 /* is the mailbox free? */ 1289 if (sc->amr_mailbox->mb_busy == 0) { 1290 debug(4, "got mailbox"); 1291 sc->amr_mailbox64->mb64_segment = 0; 1292 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 1293 done = 1; 1294 1295 /* not free, spin waiting */ 1296 } else { 1297 debug(4, "busy flag %x\n", sc->amr_mailbox->mb_busy); 1298 /* this is somewhat ugly */ 1299 DELAY(100); 1300 } 1301 splx(s); /* drop spl to allow completion interrupts */ 1302 } 1303 1304 /* 1305 * Now give the command to the controller 1306 */ 1307 if (done) { 1308 if (sc->amr_submit_command(sc)) { 1309 /* the controller wasn't ready to take the command, forget that we tried to post it */ 1310 sc->amr_mailbox->mb_busy = 0; 1311 return(EBUSY); 1312 } 1313 debug(3, "posted command"); 1314 return(0); 1315 } 1316 1317 /* 1318 * The controller wouldn't take the command. Return the command as busy 1319 * so that it is retried later. 1320 */ 1321 return(EBUSY); 1322 } 1323 1324 /******************************************************************************** 1325 * Extract one or more completed commands from the controller (sc) 1326 * 1327 * Returns nonzero if any commands on the work queue were marked as completed. 1328 */ 1329 int 1330 amr_done(struct amr_softc *sc) 1331 { 1332 struct amr_command *ac; 1333 struct amr_mailbox mbox; 1334 int i, idx, result; 1335 1336 debug_called(3); 1337 1338 /* See if there's anything for us to do */ 1339 result = 0; 1340 1341 /* loop collecting completed commands */ 1342 for (;;) { 1343 /* poll for a completed command's identifier and status */ 1344 if (sc->amr_get_work(sc, &mbox)) { 1345 result = 1; 1346 1347 /* iterate over completed commands in this result */ 1348 for (i = 0; i < mbox.mb_nstatus; i++) { 1349 /* get pointer to busy command */ 1350 idx = mbox.mb_completed[i] - 1; 1351 ac = sc->amr_busycmd[idx]; 1352 1353 /* really a busy command? */ 1354 if (ac != NULL) { 1355 1356 /* pull the command from the busy index */ 1357 sc->amr_busycmd[idx] = NULL; 1358 sc->amr_busyslots--; 1359 1360 /* save status for later use */ 1361 ac->ac_status = mbox.mb_status; 1362 amr_enqueue_completed(ac); 1363 debug(3, "completed command with status %x", mbox.mb_status); 1364 } else { 1365 device_printf(sc->amr_dev, "bad slot %d completed\n", idx); 1366 } 1367 } 1368 } else { 1369 break; /* no work */ 1370 } 1371 } 1372 1373 /* if we've completed any commands, try posting some more */ 1374 if (result) 1375 amr_startio(sc); 1376 1377 /* handle completion and timeouts */ 1378 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 1379 if (sc->amr_state & AMR_STATE_INTEN) 1380 taskqueue_enqueue(taskqueue_swi, &sc->amr_task_complete); 1381 else 1382 #endif 1383 amr_complete(sc, 0); 1384 1385 return(result); 1386 } 1387 1388 /******************************************************************************** 1389 * Do completion processing on done commands on (sc) 1390 */ 1391 static void 1392 amr_complete(void *context, int pending) 1393 { 1394 struct amr_softc *sc = (struct amr_softc *)context; 1395 struct amr_command *ac; 1396 1397 debug_called(3); 1398 1399 /* pull completed commands off the queue */ 1400 for (;;) { 1401 ac = amr_dequeue_completed(sc); 1402 if (ac == NULL) 1403 break; 1404 1405 /* unmap the command's data buffer */ 1406 amr_unmapcmd(ac); 1407 1408 /* unbusy the command */ 1409 ac->ac_flags &= ~AMR_CMD_BUSY; 1410 1411 /* 1412 * Is there a completion handler? 1413 */ 1414 if (ac->ac_complete != NULL) { 1415 ac->ac_complete(ac); 1416 1417 /* 1418 * Is someone sleeping on this one? 1419 */ 1420 } else if (ac->ac_flags & AMR_CMD_SLEEP) { 1421 wakeup(ac); 1422 } 1423 1424 if(!sc->amr_busyslots) { 1425 wakeup(sc); 1426 } 1427 } 1428 } 1429 1430 /******************************************************************************** 1431 ******************************************************************************** 1432 Command Buffer Management 1433 ******************************************************************************** 1434 ********************************************************************************/ 1435 1436 /******************************************************************************** 1437 * Get a new command buffer. 1438 * 1439 * This may return NULL in low-memory cases. 1440 * 1441 * If possible, we recycle a command buffer that's been used before. 1442 */ 1443 struct amr_command * 1444 amr_alloccmd(struct amr_softc *sc) 1445 { 1446 struct amr_command *ac; 1447 1448 debug_called(3); 1449 1450 ac = amr_dequeue_free(sc); 1451 if (ac == NULL) { 1452 amr_alloccmd_cluster(sc); 1453 ac = amr_dequeue_free(sc); 1454 } 1455 if (ac == NULL) 1456 return(NULL); 1457 1458 /* clear out significant fields */ 1459 ac->ac_slot = 0; 1460 ac->ac_status = 0; 1461 bzero(&ac->ac_mailbox, sizeof(struct amr_mailbox)); 1462 ac->ac_flags = 0; 1463 ac->ac_bio = NULL; 1464 ac->ac_data = NULL; 1465 ac->ac_ccb_data = NULL; 1466 ac->ac_complete = NULL; 1467 return(ac); 1468 } 1469 1470 /******************************************************************************** 1471 * Release a command buffer for recycling. 1472 */ 1473 void 1474 amr_releasecmd(struct amr_command *ac) 1475 { 1476 debug_called(3); 1477 1478 amr_enqueue_free(ac); 1479 } 1480 1481 /******************************************************************************** 1482 * Allocate a new command cluster and initialise it. 1483 */ 1484 static void 1485 amr_alloccmd_cluster(struct amr_softc *sc) 1486 { 1487 struct amr_command_cluster *acc; 1488 struct amr_command *ac; 1489 int s, i; 1490 1491 acc = malloc(AMR_CMD_CLUSTERSIZE, M_DEVBUF, M_NOWAIT); 1492 if (acc != NULL) { 1493 s = splbio(); 1494 TAILQ_INSERT_TAIL(&sc->amr_cmd_clusters, acc, acc_link); 1495 splx(s); 1496 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) { 1497 ac = &acc->acc_command[i]; 1498 bzero(ac, sizeof(*ac)); 1499 ac->ac_sc = sc; 1500 if (!bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_dmamap) && 1501 !bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_ccb_dmamap)) 1502 amr_releasecmd(ac); 1503 } 1504 } 1505 } 1506 1507 /******************************************************************************** 1508 * Free a command cluster 1509 */ 1510 static void 1511 amr_freecmd_cluster(struct amr_command_cluster *acc) 1512 { 1513 struct amr_softc *sc = acc->acc_command[0].ac_sc; 1514 int i; 1515 1516 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) 1517 bus_dmamap_destroy(sc->amr_buffer_dmat, acc->acc_command[i].ac_dmamap); 1518 free(acc, M_DEVBUF); 1519 } 1520 1521 /******************************************************************************** 1522 ******************************************************************************** 1523 Interface-specific Shims 1524 ******************************************************************************** 1525 ********************************************************************************/ 1526 1527 /******************************************************************************** 1528 * Tell the controller that the mailbox contains a valid command 1529 */ 1530 static int 1531 amr_quartz_submit_command(struct amr_softc *sc) 1532 { 1533 debug_called(3); 1534 1535 if (AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT) 1536 return(EBUSY); 1537 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1538 return(0); 1539 } 1540 1541 static int 1542 amr_std_submit_command(struct amr_softc *sc) 1543 { 1544 debug_called(3); 1545 1546 if (AMR_SGET_MBSTAT(sc) & AMR_SMBOX_BUSYFLAG) 1547 return(EBUSY); 1548 AMR_SPOST_COMMAND(sc); 1549 return(0); 1550 } 1551 1552 /******************************************************************************** 1553 * Claim any work that the controller has completed; acknowledge completion, 1554 * save details of the completion in (mbsave) 1555 */ 1556 static int 1557 amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1558 { 1559 int s, worked; 1560 u_int32_t outd; 1561 1562 debug_called(3); 1563 1564 worked = 0; 1565 s = splbio(); 1566 1567 /* work waiting for us? */ 1568 if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) { 1569 1570 /* save mailbox, which contains a list of completed commands */ 1571 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1572 1573 /* acknowledge interrupt */ 1574 AMR_QPUT_ODB(sc, AMR_QODB_READY); 1575 1576 /* acknowledge that we have the commands */ 1577 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1578 1579 #ifndef AMR_QUARTZ_GOFASTER 1580 /* 1581 * This waits for the controller to notice that we've taken the 1582 * command from it. It's very inefficient, and we shouldn't do it, 1583 * but if we remove this code, we stop completing commands under 1584 * load. 1585 * 1586 * Peter J says we shouldn't do this. The documentation says we 1587 * should. Who is right? 1588 */ 1589 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK) 1590 ; /* XXX aiee! what if it dies? */ 1591 #endif 1592 1593 worked = 1; /* got some work */ 1594 } 1595 1596 splx(s); 1597 return(worked); 1598 } 1599 1600 static int 1601 amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1602 { 1603 int s, worked; 1604 u_int8_t istat; 1605 1606 debug_called(3); 1607 1608 worked = 0; 1609 s = splbio(); 1610 1611 /* check for valid interrupt status */ 1612 istat = AMR_SGET_ISTAT(sc); 1613 if ((istat & AMR_SINTR_VALID) != 0) { 1614 AMR_SPUT_ISTAT(sc, istat); /* ack interrupt status */ 1615 1616 /* save mailbox, which contains a list of completed commands */ 1617 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1618 1619 AMR_SACK_INTERRUPT(sc); /* acknowledge we have the mailbox */ 1620 worked = 1; 1621 } 1622 1623 splx(s); 1624 return(worked); 1625 } 1626 1627 /******************************************************************************** 1628 * Notify the controller of the mailbox location. 1629 */ 1630 static void 1631 amr_std_attach_mailbox(struct amr_softc *sc) 1632 { 1633 1634 /* program the mailbox physical address */ 1635 AMR_SBYTE_SET(sc, AMR_SMBOX_0, sc->amr_mailboxphys & 0xff); 1636 AMR_SBYTE_SET(sc, AMR_SMBOX_1, (sc->amr_mailboxphys >> 8) & 0xff); 1637 AMR_SBYTE_SET(sc, AMR_SMBOX_2, (sc->amr_mailboxphys >> 16) & 0xff); 1638 AMR_SBYTE_SET(sc, AMR_SMBOX_3, (sc->amr_mailboxphys >> 24) & 0xff); 1639 AMR_SBYTE_SET(sc, AMR_SMBOX_ENABLE, AMR_SMBOX_ADDR); 1640 1641 /* clear any outstanding interrupt and enable interrupts proper */ 1642 AMR_SACK_INTERRUPT(sc); 1643 AMR_SENABLE_INTR(sc); 1644 } 1645 1646 #ifdef AMR_BOARD_INIT 1647 /******************************************************************************** 1648 * Initialise the controller 1649 */ 1650 static int 1651 amr_quartz_init(struct amr_softc *sc) 1652 { 1653 int status, ostatus; 1654 1655 device_printf(sc->amr_dev, "initial init status %x\n", AMR_QGET_INITSTATUS(sc)); 1656 1657 AMR_QRESET(sc); 1658 1659 ostatus = 0xff; 1660 while ((status = AMR_QGET_INITSTATUS(sc)) != AMR_QINIT_DONE) { 1661 if (status != ostatus) { 1662 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_qinit, status)); 1663 ostatus = status; 1664 } 1665 switch (status) { 1666 case AMR_QINIT_NOMEM: 1667 return(ENOMEM); 1668 1669 case AMR_QINIT_SCAN: 1670 /* XXX we could print channel/target here */ 1671 break; 1672 } 1673 } 1674 return(0); 1675 } 1676 1677 static int 1678 amr_std_init(struct amr_softc *sc) 1679 { 1680 int status, ostatus; 1681 1682 device_printf(sc->amr_dev, "initial init status %x\n", AMR_SGET_INITSTATUS(sc)); 1683 1684 AMR_SRESET(sc); 1685 1686 ostatus = 0xff; 1687 while ((status = AMR_SGET_INITSTATUS(sc)) != AMR_SINIT_DONE) { 1688 if (status != ostatus) { 1689 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_sinit, status)); 1690 ostatus = status; 1691 } 1692 switch (status) { 1693 case AMR_SINIT_NOMEM: 1694 return(ENOMEM); 1695 1696 case AMR_SINIT_INPROG: 1697 /* XXX we could print channel/target here? */ 1698 break; 1699 } 1700 } 1701 return(0); 1702 } 1703 #endif 1704 1705 /******************************************************************************** 1706 ******************************************************************************** 1707 Debugging 1708 ******************************************************************************** 1709 ********************************************************************************/ 1710 1711 /******************************************************************************** 1712 * Identify the controller and print some information about it. 1713 */ 1714 static void 1715 amr_describe_controller(struct amr_softc *sc) 1716 { 1717 struct amr_prodinfo *ap; 1718 struct amr_enquiry *ae; 1719 char *prod; 1720 1721 /* 1722 * Try to get 40LD product info, which tells us what the card is labelled as. 1723 */ 1724 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) != NULL) { 1725 device_printf(sc->amr_dev, "<LSILogic %.80s> Firmware %.16s, BIOS %.16s, %dMB RAM\n", 1726 ap->ap_product, ap->ap_firmware, ap->ap_bios, 1727 ap->ap_memsize); 1728 1729 free(ap, M_DEVBUF); 1730 return; 1731 } 1732 1733 /* 1734 * Try 8LD extended ENQUIRY to get controller signature, and use lookup table. 1735 */ 1736 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) != NULL) { 1737 prod = amr_describe_code(amr_table_adaptertype, ae->ae_signature); 1738 1739 } else if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) != NULL) { 1740 1741 /* 1742 * Try to work it out based on the PCI signatures. 1743 */ 1744 switch (pci_get_device(sc->amr_dev)) { 1745 case 0x9010: 1746 prod = "Series 428"; 1747 break; 1748 case 0x9060: 1749 prod = "Series 434"; 1750 break; 1751 default: 1752 prod = "unknown controller"; 1753 break; 1754 } 1755 } else { 1756 prod = "unsupported controller"; 1757 } 1758 1759 /* 1760 * HP NetRaid controllers have a special encoding of the firmware and 1761 * BIOS versions. The AMI version seems to have it as strings whereas 1762 * the HP version does it with a leading uppercase character and two 1763 * binary numbers. 1764 */ 1765 1766 if(ae->ae_adapter.aa_firmware[2] >= 'A' && 1767 ae->ae_adapter.aa_firmware[2] <= 'Z' && 1768 ae->ae_adapter.aa_firmware[1] < ' ' && 1769 ae->ae_adapter.aa_firmware[0] < ' ' && 1770 ae->ae_adapter.aa_bios[2] >= 'A' && 1771 ae->ae_adapter.aa_bios[2] <= 'Z' && 1772 ae->ae_adapter.aa_bios[1] < ' ' && 1773 ae->ae_adapter.aa_bios[0] < ' ') { 1774 1775 /* this looks like we have an HP NetRaid version of the MegaRaid */ 1776 1777 if(ae->ae_signature == AMR_SIG_438) { 1778 /* the AMI 438 is a NetRaid 3si in HP-land */ 1779 prod = "HP NetRaid 3si"; 1780 } 1781 1782 device_printf(sc->amr_dev, "<%s> Firmware %c.%02d.%02d, BIOS %c.%02d.%02d, %dMB RAM\n", 1783 prod, ae->ae_adapter.aa_firmware[2], 1784 ae->ae_adapter.aa_firmware[1], 1785 ae->ae_adapter.aa_firmware[0], 1786 ae->ae_adapter.aa_bios[2], 1787 ae->ae_adapter.aa_bios[1], 1788 ae->ae_adapter.aa_bios[0], 1789 ae->ae_adapter.aa_memorysize); 1790 } else { 1791 device_printf(sc->amr_dev, "<%s> Firmware %.4s, BIOS %.4s, %dMB RAM\n", 1792 prod, ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios, 1793 ae->ae_adapter.aa_memorysize); 1794 } 1795 free(ae, M_DEVBUF); 1796 } 1797 1798 int 1799 amr_dump_blocks(struct amr_softc *sc, int unit, u_int32_t lba, void *data, int blks) 1800 { 1801 1802 struct amr_command *ac; 1803 int error = 1; 1804 1805 debug_called(1); 1806 1807 sc->amr_state &= ~AMR_STATE_INTEN; 1808 1809 /* get ourselves a command buffer */ 1810 if ((ac = amr_alloccmd(sc)) == NULL) 1811 goto out; 1812 /* set command flags */ 1813 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 1814 1815 /* point the command at our data */ 1816 ac->ac_data = data; 1817 ac->ac_length = blks * AMR_BLKSIZE; 1818 1819 /* build the command proper */ 1820 ac->ac_mailbox.mb_command = AMR_CMD_LWRITE; 1821 ac->ac_mailbox.mb_blkcount = blks; 1822 ac->ac_mailbox.mb_lba = lba; 1823 ac->ac_mailbox.mb_drive = unit; 1824 1825 /* can't assume that interrupts are going to work here, so play it safe */ 1826 if (sc->amr_poll_command(ac)) 1827 goto out; 1828 error = ac->ac_status; 1829 1830 out: 1831 if (ac != NULL) 1832 amr_releasecmd(ac); 1833 1834 sc->amr_state |= AMR_STATE_INTEN; 1835 1836 return (error); 1837 } 1838 1839 1840 #ifdef AMR_DEBUG 1841 /******************************************************************************** 1842 * Print the command (ac) in human-readable format 1843 */ 1844 #if 0 1845 static void 1846 amr_printcommand(struct amr_command *ac) 1847 { 1848 struct amr_softc *sc = ac->ac_sc; 1849 struct amr_sgentry *sg; 1850 int i; 1851 1852 device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n", 1853 ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive); 1854 device_printf(sc->amr_dev, "blkcount %d lba %d\n", 1855 ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba); 1856 device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length); 1857 device_printf(sc->amr_dev, "sg physaddr %08x nsg %d\n", 1858 ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem); 1859 device_printf(sc->amr_dev, "ccb %p bio %p\n", ac->ac_ccb_data, ac->ac_bio); 1860 1861 /* get base address of s/g table */ 1862 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1863 for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++) 1864 device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count); 1865 } 1866 #endif 1867 #endif 1868