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 1.28 2008/09/16 14:08:48 swildner 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 #include <sys/rman.h> 75 76 #include <bus/pci/pcireg.h> 77 #include <bus/pci/pcivar.h> 78 79 #include "amrio.h" 80 #include "amrreg.h" 81 #include "amrvar.h" 82 #define AMR_DEFINE_TABLES 83 #include "amr_tables.h" 84 85 #define AMR_CDEV_MAJOR 132 86 87 static d_open_t amr_open; 88 static d_close_t amr_close; 89 static d_ioctl_t amr_ioctl; 90 91 static struct dev_ops amr_ops = { 92 { "amr", AMR_CDEV_MAJOR, 0 }, 93 .d_open = amr_open, 94 .d_close = amr_close, 95 .d_ioctl = amr_ioctl 96 }; 97 98 /* 99 * Initialisation, bus interface. 100 */ 101 static void amr_startup(void *arg); 102 103 /* 104 * Command wrappers 105 */ 106 static int amr_query_controller(struct amr_softc *sc); 107 static void *amr_enquiry(struct amr_softc *sc, size_t bufsize, 108 u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual); 109 static void amr_completeio(struct amr_command *ac); 110 static int amr_support_ext_cdb(struct amr_softc *sc); 111 112 /* 113 * Command buffer allocation. 114 */ 115 static void amr_alloccmd_cluster(struct amr_softc *sc); 116 static void amr_freecmd_cluster(struct amr_command_cluster *acc); 117 118 /* 119 * Command processing. 120 */ 121 static int amr_bio_command(struct amr_softc *sc, struct amr_command **acp); 122 static int amr_wait_command(struct amr_command *ac); 123 static int amr_getslot(struct amr_command *ac); 124 static void amr_mapcmd(struct amr_command *ac); 125 static void amr_unmapcmd(struct amr_command *ac); 126 static int amr_start(struct amr_command *ac); 127 static void amr_complete(void *context, int pending); 128 129 /* 130 * Status monitoring 131 */ 132 static void amr_periodic(void *data); 133 134 /* 135 * Interface-specific shims 136 */ 137 static int amr_quartz_submit_command(struct amr_softc *sc); 138 static int amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 139 static int amr_quartz_poll_command(struct amr_command *ac); 140 141 static int amr_std_submit_command(struct amr_softc *sc); 142 static int amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave); 143 static int amr_std_poll_command(struct amr_command *ac); 144 static void amr_std_attach_mailbox(struct amr_softc *sc); 145 146 #ifdef AMR_BOARD_INIT 147 static int amr_quartz_init(struct amr_softc *sc); 148 static int amr_std_init(struct amr_softc *sc); 149 #endif 150 151 /* 152 * Debugging 153 */ 154 static void amr_describe_controller(struct amr_softc *sc); 155 #ifdef AMR_DEBUG 156 #if 0 157 static void amr_printcommand(struct amr_command *ac); 158 #endif 159 #endif 160 161 DECLARE_DUMMY_MODULE(amr); 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 */ 178 int 179 amr_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 defined(__FreeBSD__) && __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_ops, device_get_unit(sc->amr_dev), 240 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 241 "amr%d", device_get_unit(sc->amr_dev)); 242 sc->amr_dev_t->si_drv1 = sc; 243 reference_dev(sc->amr_dev_t); 244 245 /* 246 * Schedule ourselves to bring the controller up once interrupts are 247 * available. 248 */ 249 bzero(&sc->amr_ich, sizeof(struct intr_config_hook)); 250 sc->amr_ich.ich_func = amr_startup; 251 sc->amr_ich.ich_arg = sc; 252 sc->amr_ich.ich_desc = "amr"; 253 if (config_intrhook_establish(&sc->amr_ich) != 0) { 254 device_printf(sc->amr_dev, "can't establish configuration hook\n"); 255 return(ENOMEM); 256 } 257 258 /* 259 * Print a little information about the controller. 260 */ 261 amr_describe_controller(sc); 262 263 debug(2, "attach complete"); 264 return(0); 265 } 266 267 /******************************************************************************** 268 * Locate disk resources and attach children to them. 269 */ 270 static void 271 amr_startup(void *arg) 272 { 273 struct amr_softc *sc = (struct amr_softc *)arg; 274 struct amr_logdrive *dr; 275 int i, error; 276 277 debug_called(1); 278 callout_init(&sc->amr_timeout); 279 280 /* pull ourselves off the intrhook chain */ 281 config_intrhook_disestablish(&sc->amr_ich); 282 283 /* get up-to-date drive information */ 284 if (amr_query_controller(sc)) { 285 device_printf(sc->amr_dev, "can't scan controller for drives\n"); 286 return; 287 } 288 289 /* iterate over available drives */ 290 for (i = 0, dr = &sc->amr_drive[0]; (i < AMR_MAXLD) && (dr->al_size != 0xffffffff); i++, dr++) { 291 /* are we already attached to this drive? */ 292 if (dr->al_disk == 0) { 293 /* generate geometry information */ 294 if (dr->al_size > 0x200000) { /* extended translation? */ 295 dr->al_heads = 255; 296 dr->al_sectors = 63; 297 } else { 298 dr->al_heads = 64; 299 dr->al_sectors = 32; 300 } 301 dr->al_cylinders = dr->al_size / (dr->al_heads * dr->al_sectors); 302 303 dr->al_disk = device_add_child(sc->amr_dev, NULL, -1); 304 if (dr->al_disk == 0) 305 device_printf(sc->amr_dev, "device_add_child failed\n"); 306 device_set_ivars(dr->al_disk, dr); 307 } 308 } 309 310 if ((error = bus_generic_attach(sc->amr_dev)) != 0) 311 device_printf(sc->amr_dev, "bus_generic_attach returned %d\n", error); 312 313 /* mark controller back up */ 314 sc->amr_state &= ~AMR_STATE_SHUTDOWN; 315 316 /* interrupts will be enabled before we do anything more */ 317 sc->amr_state |= AMR_STATE_INTEN; 318 319 /* 320 * Start the timeout routine. 321 */ 322 /* callout_reset(&sc->amr_timeout, hz, amr_periodic, sc); */ 323 324 return; 325 } 326 327 /******************************************************************************* 328 * Free resources associated with a controller instance 329 */ 330 void 331 amr_free(struct amr_softc *sc) 332 { 333 struct amr_command_cluster *acc; 334 335 /* detach from CAM */ 336 amr_cam_detach(sc); 337 338 /* cancel status timeout */ 339 callout_stop(&sc->amr_timeout); 340 341 /* throw away any command buffers */ 342 while ((acc = TAILQ_FIRST(&sc->amr_cmd_clusters)) != NULL) { 343 TAILQ_REMOVE(&sc->amr_cmd_clusters, acc, acc_link); 344 amr_freecmd_cluster(acc); 345 } 346 347 /* destroy control device */ 348 if( sc->amr_dev_t != (cdev_t)NULL) 349 destroy_dev(sc->amr_dev_t); 350 dev_ops_remove_minor(&amr_ops, device_get_unit(sc->amr_dev)); 351 } 352 353 /******************************************************************************* 354 * Receive a bio structure from a child device and queue it on a particular 355 * disk resource, then poke the disk resource to start as much work as it can. 356 */ 357 int 358 amr_submit_bio(struct amr_softc *sc, struct bio *bio) 359 { 360 debug_called(2); 361 362 amr_enqueue_bio(sc, bio); 363 amr_startio(sc); 364 return(0); 365 } 366 367 /******************************************************************************** 368 * Accept an open operation on the control device. 369 */ 370 static int 371 amr_open(struct dev_open_args *ap) 372 { 373 cdev_t dev = ap->a_head.a_dev; 374 int unit = minor(dev); 375 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 376 377 debug_called(1); 378 379 sc->amr_state |= AMR_STATE_OPEN; 380 return(0); 381 } 382 383 /******************************************************************************** 384 * Accept the last close on the control device. 385 */ 386 static int 387 amr_close(struct dev_close_args *ap) 388 { 389 cdev_t dev = ap->a_head.a_dev; 390 int unit = minor(dev); 391 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 392 393 debug_called(1); 394 395 sc->amr_state &= ~AMR_STATE_OPEN; 396 return (0); 397 } 398 399 /******************************************************************************** 400 * Handle controller-specific control operations. 401 */ 402 static int 403 amr_ioctl(struct dev_ioctl_args *ap) 404 { 405 cdev_t dev = ap->a_head.a_dev; 406 struct amr_softc *sc = (struct amr_softc *)dev->si_drv1; 407 int *arg = (int *)ap->a_data; 408 struct amr_user_ioctl *au = (struct amr_user_ioctl *)ap->a_data; 409 struct amr_command *ac; 410 struct amr_mailbox_ioctl *mbi; 411 struct amr_passthrough *apt; 412 void *dp; 413 int error; 414 415 debug_called(1); 416 417 error = 0; 418 dp = NULL; 419 apt = NULL; 420 ac = NULL; 421 switch(ap->a_cmd) { 422 423 case AMR_IO_VERSION: 424 debug(1, "AMR_IO_VERSION"); 425 *arg = AMR_IO_VERSION_NUMBER; 426 break; 427 428 case AMR_IO_COMMAND: 429 debug(1, "AMR_IO_COMMAND 0x%x", au->au_cmd[0]); 430 /* handle inbound data buffer */ 431 if (au->au_length != 0) { 432 dp = kmalloc(au->au_length, M_DEVBUF, M_WAITOK); 433 if ((error = copyin(au->au_buffer, dp, au->au_length)) != 0) 434 break; 435 debug(2, "copyin %ld bytes from %p -> %p", au->au_length, au->au_buffer, dp); 436 } 437 438 if ((ac = amr_alloccmd(sc)) == NULL) { 439 error = ENOMEM; 440 break; 441 } 442 443 /* handle SCSI passthrough command */ 444 if (au->au_cmd[0] == AMR_CMD_PASS) { 445 apt = kmalloc(sizeof(*apt), M_DEVBUF, M_WAITOK | M_ZERO); 446 447 /* copy cdb */ 448 apt->ap_cdb_length = au->au_cmd[2]; 449 bcopy(&au->au_cmd[3], &apt->ap_cdb[0], apt->ap_cdb_length); 450 451 /* build passthrough */ 452 apt->ap_timeout = au->au_cmd[apt->ap_cdb_length + 3] & 0x07; 453 apt->ap_ars = (au->au_cmd[apt->ap_cdb_length + 3] & 0x08) ? 1 : 0; 454 apt->ap_islogical = (au->au_cmd[apt->ap_cdb_length + 3] & 0x80) ? 1 : 0; 455 apt->ap_logical_drive_no = au->au_cmd[apt->ap_cdb_length + 4]; 456 apt->ap_channel = au->au_cmd[apt->ap_cdb_length + 5]; 457 apt->ap_scsi_id = au->au_cmd[apt->ap_cdb_length + 6]; 458 apt->ap_request_sense_length = 14; 459 apt->ap_data_transfer_length = au->au_length; 460 /* XXX what about the request-sense area? does the caller want it? */ 461 462 /* build command */ 463 ac->ac_data = apt; 464 ac->ac_length = sizeof(*apt); 465 ac->ac_flags |= AMR_CMD_DATAOUT; 466 ac->ac_ccb_data = dp; 467 ac->ac_ccb_length = au->au_length; 468 if (au->au_direction & AMR_IO_READ) 469 ac->ac_flags |= AMR_CMD_CCB_DATAIN; 470 if (au->au_direction & AMR_IO_WRITE) 471 ac->ac_flags |= AMR_CMD_CCB_DATAOUT; 472 473 ac->ac_mailbox.mb_command = AMR_CMD_PASS; 474 475 } else { 476 /* direct command to controller */ 477 mbi = (struct amr_mailbox_ioctl *)&ac->ac_mailbox; 478 479 /* copy pertinent mailbox items */ 480 mbi->mb_command = au->au_cmd[0]; 481 mbi->mb_channel = au->au_cmd[1]; 482 mbi->mb_param = au->au_cmd[2]; 483 mbi->mb_pad[0] = au->au_cmd[3]; 484 mbi->mb_drive = au->au_cmd[4]; 485 486 /* build the command */ 487 ac->ac_data = dp; 488 ac->ac_length = au->au_length; 489 if (au->au_direction & AMR_IO_READ) 490 ac->ac_flags |= AMR_CMD_DATAIN; 491 if (au->au_direction & AMR_IO_WRITE) 492 ac->ac_flags |= AMR_CMD_DATAOUT; 493 } 494 495 /* run the command */ 496 if ((error = amr_wait_command(ac)) != 0) 497 break; 498 499 /* copy out data and set status */ 500 if (au->au_length != 0) 501 error = copyout(dp, au->au_buffer, au->au_length); 502 debug(2, "copyout %ld bytes from %p -> %p", au->au_length, dp, au->au_buffer); 503 if (dp != NULL) 504 debug(2, "%16d", (int)dp); 505 au->au_status = ac->ac_status; 506 break; 507 508 default: 509 debug(1, "unknown ioctl 0x%lx", cmd); 510 error = ENOIOCTL; 511 break; 512 } 513 514 if (dp != NULL) 515 kfree(dp, M_DEVBUF); 516 if (apt != NULL) 517 kfree(apt, M_DEVBUF); 518 if (ac != NULL) 519 amr_releasecmd(ac); 520 return(error); 521 } 522 523 /******************************************************************************** 524 ******************************************************************************** 525 Status Monitoring 526 ******************************************************************************** 527 ********************************************************************************/ 528 529 /******************************************************************************** 530 * Perform a periodic check of the controller status 531 */ 532 static void 533 amr_periodic(void *data) 534 { 535 struct amr_softc *sc = (struct amr_softc *)data; 536 537 debug_called(2); 538 539 /* XXX perform periodic status checks here */ 540 541 /* compensate for missed interrupts */ 542 amr_done(sc); 543 544 /* reschedule */ 545 callout_reset(&sc->amr_timeout, hz, amr_periodic, sc); 546 } 547 548 /******************************************************************************** 549 ******************************************************************************** 550 Command Wrappers 551 ******************************************************************************** 552 ********************************************************************************/ 553 554 /******************************************************************************** 555 * Interrogate the controller for the operational parameters we require. 556 */ 557 static int 558 amr_query_controller(struct amr_softc *sc) 559 { 560 struct amr_enquiry3 *aex; 561 struct amr_prodinfo *ap; 562 struct amr_enquiry *ae; 563 int ldrv; 564 565 /* 566 * If we haven't found the real limit yet, let us have a couple of commands in 567 * order to be able to probe. 568 */ 569 if (sc->amr_maxio == 0) 570 sc->amr_maxio = 2; 571 572 /* 573 * Greater than 10 byte cdb support 574 */ 575 sc->support_ext_cdb = amr_support_ext_cdb(sc); 576 577 if(sc->support_ext_cdb) { 578 debug(2,"supports extended CDBs."); 579 } 580 581 /* 582 * Try to issue an ENQUIRY3 command 583 */ 584 if ((aex = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_ENQ3, 585 AMR_CONFIG_ENQ3_SOLICITED_FULL)) != NULL) { 586 587 /* 588 * Fetch current state of logical drives. 589 */ 590 for (ldrv = 0; ldrv < aex->ae_numldrives; ldrv++) { 591 sc->amr_drive[ldrv].al_size = aex->ae_drivesize[ldrv]; 592 sc->amr_drive[ldrv].al_state = aex->ae_drivestate[ldrv]; 593 sc->amr_drive[ldrv].al_properties = aex->ae_driveprop[ldrv]; 594 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 595 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 596 } 597 kfree(aex, M_DEVBUF); 598 599 /* 600 * Get product info for channel count. 601 */ 602 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) == NULL) { 603 device_printf(sc->amr_dev, "can't obtain product data from controller\n"); 604 return(1); 605 } 606 sc->amr_maxdrives = 40; 607 sc->amr_maxchan = ap->ap_nschan; 608 sc->amr_maxio = ap->ap_maxio; 609 sc->amr_type |= AMR_TYPE_40LD; 610 kfree(ap, M_DEVBUF); 611 612 } else { 613 614 /* failed, try the 8LD ENQUIRY commands */ 615 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) == NULL) { 616 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) == NULL) { 617 device_printf(sc->amr_dev, "can't obtain configuration data from controller\n"); 618 return(1); 619 } 620 ae->ae_signature = 0; 621 } 622 623 /* 624 * Fetch current state of logical drives. 625 */ 626 for (ldrv = 0; ldrv < ae->ae_ldrv.al_numdrives; ldrv++) { 627 sc->amr_drive[ldrv].al_size = ae->ae_ldrv.al_size[ldrv]; 628 sc->amr_drive[ldrv].al_state = ae->ae_ldrv.al_state[ldrv]; 629 sc->amr_drive[ldrv].al_properties = ae->ae_ldrv.al_properties[ldrv]; 630 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 631 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 632 } 633 634 sc->amr_maxdrives = 8; 635 sc->amr_maxchan = ae->ae_adapter.aa_channels; 636 sc->amr_maxio = ae->ae_adapter.aa_maxio; 637 kfree(ae, M_DEVBUF); 638 } 639 640 /* 641 * Mark remaining drives as unused. 642 */ 643 for (; ldrv < AMR_MAXLD; ldrv++) 644 sc->amr_drive[ldrv].al_size = 0xffffffff; 645 646 /* 647 * Cap the maximum number of outstanding I/Os. AMI's Linux driver doesn't trust 648 * the controller's reported value, and lockups have been seen when we do. 649 */ 650 sc->amr_maxio = imin(sc->amr_maxio, AMR_LIMITCMD); 651 652 return(0); 653 } 654 655 /******************************************************************************** 656 * Run a generic enquiry-style command. 657 */ 658 static void * 659 amr_enquiry(struct amr_softc *sc, size_t bufsize, u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual) 660 { 661 struct amr_command *ac; 662 void *result; 663 u_int8_t *mbox; 664 int error; 665 666 debug_called(1); 667 668 error = 1; 669 result = NULL; 670 671 /* get ourselves a command buffer */ 672 if ((ac = amr_alloccmd(sc)) == NULL) 673 goto out; 674 /* allocate the response structure */ 675 result = kmalloc(bufsize, M_DEVBUF, M_INTWAIT); 676 /* set command flags */ 677 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 678 679 /* point the command at our data */ 680 ac->ac_data = result; 681 ac->ac_length = bufsize; 682 683 /* build the command proper */ 684 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 685 mbox[0] = cmd; 686 mbox[2] = cmdsub; 687 mbox[3] = cmdqual; 688 689 /* can't assume that interrupts are going to work here, so play it safe */ 690 if (sc->amr_poll_command(ac)) 691 goto out; 692 error = ac->ac_status; 693 694 out: 695 if (ac != NULL) 696 amr_releasecmd(ac); 697 if ((error != 0) && (result != NULL)) { 698 kfree(result, M_DEVBUF); 699 result = NULL; 700 } 701 return(result); 702 } 703 704 /******************************************************************************** 705 * Flush the controller's internal cache, return status. 706 */ 707 int 708 amr_flush(struct amr_softc *sc) 709 { 710 struct amr_command *ac; 711 int error; 712 713 /* get ourselves a command buffer */ 714 error = 1; 715 if ((ac = amr_alloccmd(sc)) == NULL) 716 goto out; 717 /* set command flags */ 718 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 719 720 /* build the command proper */ 721 ac->ac_mailbox.mb_command = AMR_CMD_FLUSH; 722 723 /* we have to poll, as the system may be going down or otherwise damaged */ 724 if (sc->amr_poll_command(ac)) 725 goto out; 726 error = ac->ac_status; 727 728 out: 729 if (ac != NULL) 730 amr_releasecmd(ac); 731 return(error); 732 } 733 734 /******************************************************************************** 735 * Detect extented cdb >> greater than 10 byte cdb support 736 * returns '1' means this support exist 737 * returns '0' means this support doesn't exist 738 */ 739 static int 740 amr_support_ext_cdb(struct amr_softc *sc) 741 { 742 struct amr_command *ac; 743 u_int8_t *mbox; 744 int error; 745 746 /* get ourselves a command buffer */ 747 error = 0; 748 if ((ac = amr_alloccmd(sc)) == NULL) 749 goto out; 750 /* set command flags */ 751 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 752 753 /* build the command proper */ 754 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 755 mbox[0] = 0xA4; 756 mbox[2] = 0x16; 757 758 759 /* we have to poll, as the system may be going down or otherwise damaged */ 760 if (sc->amr_poll_command(ac)) 761 goto out; 762 if( ac->ac_status == AMR_STATUS_SUCCESS ) { 763 error = 1; 764 } 765 766 out: 767 if (ac != NULL) 768 amr_releasecmd(ac); 769 return(error); 770 } 771 772 /******************************************************************************** 773 * Try to find I/O work for the controller from one or more of the work queues. 774 * 775 * We make the assumption that if the controller is not ready to take a command 776 * at some given time, it will generate an interrupt at some later time when 777 * it is. 778 */ 779 void 780 amr_startio(struct amr_softc *sc) 781 { 782 struct amr_command *ac; 783 784 /* spin until something prevents us from doing any work */ 785 for (;;) { 786 787 /* try to get a ready command */ 788 ac = amr_dequeue_ready(sc); 789 790 /* if that failed, build a command from a bio */ 791 if (ac == NULL) 792 (void)amr_bio_command(sc, &ac); 793 794 /* if that failed, build a command from a ccb */ 795 if (ac == NULL) 796 (void)amr_cam_command(sc, &ac); 797 798 /* if we don't have anything to do, give up */ 799 if (ac == NULL) 800 break; 801 802 /* try to give the command to the controller; if this fails save it for later and give up */ 803 if (amr_start(ac)) { 804 debug(2, "controller busy, command deferred"); 805 amr_requeue_ready(ac); /* XXX schedule retry very soon? */ 806 break; 807 } 808 } 809 } 810 811 /******************************************************************************** 812 * Handle completion of an I/O command. 813 */ 814 static void 815 amr_completeio(struct amr_command *ac) 816 { 817 struct amr_softc *sc = ac->ac_sc; 818 819 if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */ 820 ac->ac_bio->bio_buf->b_error = EIO; 821 ac->ac_bio->bio_buf->b_flags |= B_ERROR; 822 823 device_printf(sc->amr_dev, "I/O error - 0x%x\n", ac->ac_status); 824 /* amr_printcommand(ac);*/ 825 } 826 amrd_intr(ac->ac_bio); 827 amr_releasecmd(ac); 828 } 829 830 /******************************************************************************** 831 ******************************************************************************** 832 Command Processing 833 ******************************************************************************** 834 ********************************************************************************/ 835 836 /******************************************************************************** 837 * Convert a bio off the top of the bio queue into a command. 838 */ 839 static int 840 amr_bio_command(struct amr_softc *sc, struct amr_command **acp) 841 { 842 struct amr_command *ac; 843 struct amrd_softc *amrd; 844 struct bio *bio; 845 int error; 846 int blkcount; 847 int driveno; 848 int cmd; 849 u_int64_t lba; 850 851 ac = NULL; 852 error = 0; 853 854 /* get a bio to work on */ 855 if ((bio = amr_dequeue_bio(sc)) == NULL) 856 goto out; 857 858 /* get a command */ 859 if ((ac = amr_alloccmd(sc)) == NULL) { 860 error = ENOMEM; 861 goto out; 862 } 863 864 /* connect the bio to the command */ 865 ac->ac_complete = amr_completeio; 866 ac->ac_bio = bio; 867 ac->ac_data = bio->bio_buf->b_data; 868 ac->ac_length = bio->bio_buf->b_bcount; 869 870 switch (bio->bio_buf->b_cmd) { 871 case BUF_CMD_READ: 872 ac->ac_flags |= AMR_CMD_DATAIN; 873 cmd = AMR_CMD_LREAD; 874 break; 875 case BUF_CMD_WRITE: 876 ac->ac_flags |= AMR_CMD_DATAOUT; 877 cmd = AMR_CMD_LWRITE; 878 break; 879 case BUF_CMD_FLUSH: 880 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 881 cmd = AMR_CMD_FLUSH; 882 break; 883 default: 884 cmd = 0; 885 break; 886 } 887 amrd = (struct amrd_softc *)bio->bio_driver_info; 888 driveno = amrd->amrd_drive - sc->amr_drive; 889 blkcount = (bio->bio_buf->b_bcount + AMR_BLKSIZE - 1) / AMR_BLKSIZE; 890 891 lba = bio->bio_offset / AMR_BLKSIZE; 892 KKASSERT(lba < 0x100000000ULL); 893 894 ac->ac_mailbox.mb_command = cmd; 895 ac->ac_mailbox.mb_blkcount = blkcount; 896 ac->ac_mailbox.mb_lba = lba; 897 ac->ac_mailbox.mb_drive = driveno; 898 /* we fill in the s/g related data when the command is mapped */ 899 900 if ((lba + blkcount) > sc->amr_drive[driveno].al_size) 901 device_printf(sc->amr_dev, "I/O beyond end of unit (%lld,%d > %lu)\n", 902 lba, blkcount, 903 (u_long)sc->amr_drive[driveno].al_size); 904 905 out: 906 if (error != 0) { 907 if (ac != NULL) 908 amr_releasecmd(ac); 909 if (bio != NULL) /* this breaks ordering... */ 910 amr_enqueue_bio(sc, bio); 911 } 912 *acp = ac; 913 return(error); 914 } 915 916 /******************************************************************************** 917 * Take a command, submit it to the controller and sleep until it completes 918 * or fails. Interrupts must be enabled, returns nonzero on error. 919 */ 920 static int 921 amr_wait_command(struct amr_command *ac) 922 { 923 int error, count; 924 925 debug_called(1); 926 927 ac->ac_complete = NULL; 928 ac->ac_flags |= AMR_CMD_SLEEP; 929 if ((error = amr_start(ac)) != 0) 930 return(error); 931 932 count = 0; 933 /* XXX better timeout? */ 934 while ((ac->ac_flags & AMR_CMD_BUSY) && (count < 30)) { 935 tsleep(ac, PCATCH, "amrwcmd", hz); 936 } 937 return(0); 938 } 939 940 /******************************************************************************** 941 * Take a command, submit it to the controller and busy-wait for it to return. 942 * Returns nonzero on error. Can be safely called with interrupts enabled. 943 */ 944 static int 945 amr_std_poll_command(struct amr_command *ac) 946 { 947 struct amr_softc *sc = ac->ac_sc; 948 int error, count; 949 950 debug_called(2); 951 952 ac->ac_complete = NULL; 953 if ((error = amr_start(ac)) != 0) 954 return(error); 955 956 count = 0; 957 do { 958 /* 959 * Poll for completion, although the interrupt handler may beat us to it. 960 * Note that the timeout here is somewhat arbitrary. 961 */ 962 amr_done(sc); 963 DELAY(1000); 964 } while ((ac->ac_flags & AMR_CMD_BUSY) && (count++ < 1000)); 965 if (!(ac->ac_flags & AMR_CMD_BUSY)) { 966 error = 0; 967 } else { 968 /* XXX the slot is now marked permanently busy */ 969 error = EIO; 970 device_printf(sc->amr_dev, "polled command timeout\n"); 971 } 972 return(error); 973 } 974 975 /******************************************************************************** 976 * Take a command, submit it to the controller and busy-wait for it to return. 977 * Returns nonzero on error. Can be safely called with interrupts enabled. 978 */ 979 static int 980 amr_quartz_poll_command(struct amr_command *ac) 981 { 982 struct amr_softc *sc = ac->ac_sc; 983 int error,count; 984 985 debug_called(2); 986 987 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 988 amr_mapcmd(ac); 989 990 crit_enter(); 991 992 if (sc->amr_state & AMR_STATE_INTEN) { 993 count=0; 994 while (sc->amr_busyslots) { 995 tsleep(sc, PCATCH, "amrpoll", hz); 996 if(count++>10) { 997 break; 998 } 999 } 1000 1001 if(sc->amr_busyslots) { 1002 device_printf(sc->amr_dev, "adapter is busy\n"); 1003 crit_exit(); 1004 amr_unmapcmd(ac); 1005 ac->ac_status=0; 1006 return(1); 1007 } 1008 } 1009 1010 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 1011 1012 /* clear the poll/ack fields in the mailbox */ 1013 sc->amr_mailbox->mb_ident = 0xFE; 1014 sc->amr_mailbox->mb_nstatus = 0xFF; 1015 sc->amr_mailbox->mb_status = 0xFF; 1016 sc->amr_mailbox->mb_poll = 0; 1017 sc->amr_mailbox->mb_ack = 0; 1018 sc->amr_mailbox->mb_busy = 1; 1019 1020 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1021 1022 while(sc->amr_mailbox->mb_nstatus == 0xFF); 1023 while(sc->amr_mailbox->mb_status == 0xFF); 1024 ac->ac_status=sc->amr_mailbox->mb_status; 1025 error = (ac->ac_status !=AMR_STATUS_SUCCESS) ? 1:0; 1026 while(sc->amr_mailbox->mb_poll != 0x77); 1027 sc->amr_mailbox->mb_poll = 0; 1028 sc->amr_mailbox->mb_ack = 0x77; 1029 1030 /* acknowledge that we have the commands */ 1031 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1032 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK); 1033 1034 crit_exit(); 1035 1036 /* unmap the command's data buffer */ 1037 amr_unmapcmd(ac); 1038 1039 return(error); 1040 } 1041 1042 /******************************************************************************** 1043 * Get a free command slot for a command if it doesn't already have one. 1044 * 1045 * May be safely called multiple times for a given command. 1046 */ 1047 static int 1048 amr_getslot(struct amr_command *ac) 1049 { 1050 struct amr_softc *sc = ac->ac_sc; 1051 int slot, limit, error; 1052 1053 debug_called(3); 1054 1055 /* if the command already has a slot, don't try to give it another one */ 1056 if (ac->ac_slot != 0) 1057 return(0); 1058 1059 /* enforce slot usage limit */ 1060 limit = (ac->ac_flags & AMR_CMD_PRIORITY) ? sc->amr_maxio : sc->amr_maxio - 4; 1061 if (sc->amr_busyslots > limit) 1062 return(EBUSY); 1063 1064 /* 1065 * Allocate a slot. XXX linear scan is slow 1066 */ 1067 error = EBUSY; 1068 crit_enter(); 1069 for (slot = 0; slot < sc->amr_maxio; slot++) { 1070 if (sc->amr_busycmd[slot] == NULL) { 1071 sc->amr_busycmd[slot] = ac; 1072 sc->amr_busyslots++; 1073 ac->ac_slot = slot; 1074 error = 0; 1075 break; 1076 } 1077 } 1078 crit_exit(); 1079 1080 return(error); 1081 } 1082 1083 /******************************************************************************** 1084 * Map/unmap (ac)'s data in the controller's addressable space as required. 1085 * 1086 * These functions may be safely called multiple times on a given command. 1087 */ 1088 static void 1089 amr_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1090 { 1091 struct amr_command *ac = (struct amr_command *)arg; 1092 struct amr_softc *sc = ac->ac_sc; 1093 struct amr_sgentry *sg; 1094 int i; 1095 u_int8_t *sgc; 1096 1097 debug_called(3); 1098 1099 /* get base address of s/g table */ 1100 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1101 1102 /* save data physical address */ 1103 ac->ac_dataphys = segs[0].ds_addr; 1104 1105 /* for AMR_CMD_CONFIG the s/g count goes elsewhere */ 1106 if (ac->ac_mailbox.mb_command == AMR_CMD_CONFIG) { 1107 sgc = &(((struct amr_mailbox_ioctl *)&ac->ac_mailbox)->mb_param); 1108 } else { 1109 sgc = &ac->ac_mailbox.mb_nsgelem; 1110 } 1111 1112 /* decide whether we need to populate the s/g table */ 1113 if (nsegments < 2) { 1114 *sgc = 0; 1115 ac->ac_mailbox.mb_nsgelem = 0; 1116 ac->ac_mailbox.mb_physaddr = ac->ac_dataphys; 1117 } else { 1118 ac->ac_mailbox.mb_nsgelem = nsegments; 1119 *sgc = nsegments; 1120 ac->ac_mailbox.mb_physaddr = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1121 for (i = 0; i < nsegments; i++, sg++) { 1122 sg->sg_addr = segs[i].ds_addr; 1123 sg->sg_count = segs[i].ds_len; 1124 } 1125 } 1126 } 1127 1128 static void 1129 amr_setup_ccbmap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1130 { 1131 struct amr_command *ac = (struct amr_command *)arg; 1132 struct amr_softc *sc = ac->ac_sc; 1133 struct amr_sgentry *sg; 1134 struct amr_passthrough *ap = (struct amr_passthrough *)ac->ac_data; 1135 struct amr_ext_passthrough *aep = (struct amr_ext_passthrough *)ac->ac_data; 1136 int i; 1137 1138 /* get base address of s/g table */ 1139 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1140 1141 /* decide whether we need to populate the s/g table */ 1142 if( ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS ) { 1143 if (nsegments < 2) { 1144 aep->ap_no_sg_elements = 0; 1145 aep->ap_data_transfer_address = segs[0].ds_addr; 1146 } else { 1147 /* save s/g table information in passthrough */ 1148 aep->ap_no_sg_elements = nsegments; 1149 aep->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1150 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1151 for (i = 0; i < nsegments; i++, sg++) { 1152 sg->sg_addr = segs[i].ds_addr; 1153 sg->sg_count = segs[i].ds_len; 1154 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1155 } 1156 } 1157 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1158 aep->ap_no_sg_elements, aep->ap_data_transfer_address, ac->ac_dataphys); 1159 } else { 1160 if (nsegments < 2) { 1161 ap->ap_no_sg_elements = 0; 1162 ap->ap_data_transfer_address = segs[0].ds_addr; 1163 } else { 1164 /* save s/g table information in passthrough */ 1165 ap->ap_no_sg_elements = nsegments; 1166 ap->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1167 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1168 for (i = 0; i < nsegments; i++, sg++) { 1169 sg->sg_addr = segs[i].ds_addr; 1170 sg->sg_count = segs[i].ds_len; 1171 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1172 } 1173 } 1174 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1175 ap->ap_no_sg_elements, ap->ap_data_transfer_address, ac->ac_dataphys); 1176 } 1177 } 1178 1179 static void 1180 amr_mapcmd(struct amr_command *ac) 1181 { 1182 struct amr_softc *sc = ac->ac_sc; 1183 1184 debug_called(3); 1185 1186 /* if the command involves data at all, and hasn't been mapped */ 1187 if (!(ac->ac_flags & AMR_CMD_MAPPED)) { 1188 1189 if (ac->ac_data != NULL) { 1190 /* map the data buffers into bus space and build the s/g list */ 1191 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_dmamap, ac->ac_data, ac->ac_length, 1192 amr_setup_dmamap, ac, 0); 1193 if (ac->ac_flags & AMR_CMD_DATAIN) 1194 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREREAD); 1195 if (ac->ac_flags & AMR_CMD_DATAOUT) 1196 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREWRITE); 1197 } 1198 1199 if (ac->ac_ccb_data != NULL) { 1200 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, ac->ac_ccb_data, ac->ac_ccb_length, 1201 amr_setup_ccbmap, ac, 0); 1202 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1203 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREREAD); 1204 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1205 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREWRITE); 1206 } 1207 ac->ac_flags |= AMR_CMD_MAPPED; 1208 } 1209 } 1210 1211 static void 1212 amr_unmapcmd(struct amr_command *ac) 1213 { 1214 struct amr_softc *sc = ac->ac_sc; 1215 1216 debug_called(3); 1217 1218 /* if the command involved data at all and was mapped */ 1219 if (ac->ac_flags & AMR_CMD_MAPPED) { 1220 1221 if (ac->ac_data != NULL) { 1222 if (ac->ac_flags & AMR_CMD_DATAIN) 1223 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTREAD); 1224 if (ac->ac_flags & AMR_CMD_DATAOUT) 1225 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE); 1226 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap); 1227 } 1228 1229 if (ac->ac_ccb_data != NULL) { 1230 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1231 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTREAD); 1232 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1233 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTWRITE); 1234 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_ccb_dmamap); 1235 } 1236 ac->ac_flags &= ~AMR_CMD_MAPPED; 1237 } 1238 } 1239 1240 /******************************************************************************** 1241 * Take a command and give it to the controller, returns 0 if successful, or 1242 * EBUSY if the command should be retried later. 1243 */ 1244 static int 1245 amr_start(struct amr_command *ac) 1246 { 1247 struct amr_softc *sc = ac->ac_sc; 1248 int done, i; 1249 1250 debug_called(3); 1251 1252 /* mark command as busy so that polling consumer can tell */ 1253 ac->ac_flags |= AMR_CMD_BUSY; 1254 1255 /* get a command slot (freed in amr_done) */ 1256 if (amr_getslot(ac)) 1257 return(EBUSY); 1258 1259 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 1260 amr_mapcmd(ac); 1261 1262 /* mark the new mailbox we are going to copy in as busy */ 1263 ac->ac_mailbox.mb_busy = 1; 1264 1265 /* clear the poll/ack fields in the mailbox */ 1266 sc->amr_mailbox->mb_poll = 0; 1267 sc->amr_mailbox->mb_ack = 0; 1268 1269 /* 1270 * Save the slot number so that we can locate this command when complete. 1271 * Note that ident = 0 seems to be special, so we don't use it. 1272 */ 1273 ac->ac_mailbox.mb_ident = ac->ac_slot + 1; 1274 1275 /* 1276 * Spin waiting for the mailbox, give up after ~1 second. We expect the 1277 * controller to be able to handle our I/O. 1278 * 1279 * XXX perhaps we should wait for less time, and count on the deferred command 1280 * handling to deal with retries? 1281 */ 1282 debug(4, "wait for mailbox"); 1283 for (i = 10000, done = 0; (i > 0) && !done; i--) { 1284 crit_enter(); 1285 1286 /* is the mailbox free? */ 1287 if (sc->amr_mailbox->mb_busy == 0) { 1288 debug(4, "got mailbox"); 1289 sc->amr_mailbox64->mb64_segment = 0; 1290 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 1291 done = 1; 1292 1293 /* not free, spin waiting */ 1294 } else { 1295 debug(4, "busy flag %x\n", sc->amr_mailbox->mb_busy); 1296 /* this is somewhat ugly */ 1297 DELAY(100); 1298 } 1299 crit_exit(); 1300 } 1301 1302 /* 1303 * Now give the command to the controller 1304 */ 1305 if (done) { 1306 if (sc->amr_submit_command(sc)) { 1307 /* the controller wasn't ready to take the command, forget that we tried to post it */ 1308 sc->amr_mailbox->mb_busy = 0; 1309 return(EBUSY); 1310 } 1311 debug(3, "posted command"); 1312 return(0); 1313 } 1314 1315 /* 1316 * The controller wouldn't take the command. Return the command as busy 1317 * so that it is retried later. 1318 */ 1319 return(EBUSY); 1320 } 1321 1322 /******************************************************************************** 1323 * Extract one or more completed commands from the controller (sc) 1324 * 1325 * Returns nonzero if any commands on the work queue were marked as completed. 1326 */ 1327 int 1328 amr_done(struct amr_softc *sc) 1329 { 1330 struct amr_command *ac; 1331 struct amr_mailbox mbox; 1332 int i, idx, result; 1333 1334 debug_called(3); 1335 1336 /* See if there's anything for us to do */ 1337 result = 0; 1338 1339 /* loop collecting completed commands */ 1340 for (;;) { 1341 /* poll for a completed command's identifier and status */ 1342 if (sc->amr_get_work(sc, &mbox)) { 1343 result = 1; 1344 1345 /* iterate over completed commands in this result */ 1346 for (i = 0; i < mbox.mb_nstatus; i++) { 1347 /* get pointer to busy command */ 1348 idx = mbox.mb_completed[i] - 1; 1349 ac = sc->amr_busycmd[idx]; 1350 1351 /* really a busy command? */ 1352 if (ac != NULL) { 1353 1354 /* pull the command from the busy index */ 1355 sc->amr_busycmd[idx] = NULL; 1356 sc->amr_busyslots--; 1357 1358 /* save status for later use */ 1359 ac->ac_status = mbox.mb_status; 1360 amr_enqueue_completed(ac); 1361 debug(3, "completed command with status %x", mbox.mb_status); 1362 } else { 1363 device_printf(sc->amr_dev, "bad slot %d completed\n", idx); 1364 } 1365 } 1366 } else { 1367 break; /* no work */ 1368 } 1369 } 1370 1371 /* if we've completed any commands, try posting some more */ 1372 if (result) 1373 amr_startio(sc); 1374 1375 /* handle completion and timeouts */ 1376 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 1377 if (sc->amr_state & AMR_STATE_INTEN) 1378 taskqueue_enqueue(taskqueue_swi, &sc->amr_task_complete); 1379 else 1380 #endif 1381 amr_complete(sc, 0); 1382 1383 return(result); 1384 } 1385 1386 /******************************************************************************** 1387 * Do completion processing on done commands on (sc) 1388 */ 1389 static void 1390 amr_complete(void *context, int pending) 1391 { 1392 struct amr_softc *sc = (struct amr_softc *)context; 1393 struct amr_command *ac; 1394 1395 debug_called(3); 1396 1397 /* pull completed commands off the queue */ 1398 for (;;) { 1399 ac = amr_dequeue_completed(sc); 1400 if (ac == NULL) 1401 break; 1402 1403 /* unmap the command's data buffer */ 1404 amr_unmapcmd(ac); 1405 1406 /* unbusy the command */ 1407 ac->ac_flags &= ~AMR_CMD_BUSY; 1408 1409 /* 1410 * Is there a completion handler? 1411 */ 1412 if (ac->ac_complete != NULL) { 1413 ac->ac_complete(ac); 1414 1415 /* 1416 * Is someone sleeping on this one? 1417 */ 1418 } else if (ac->ac_flags & AMR_CMD_SLEEP) { 1419 wakeup(ac); 1420 } 1421 1422 if(!sc->amr_busyslots) { 1423 wakeup(sc); 1424 } 1425 } 1426 } 1427 1428 /******************************************************************************** 1429 ******************************************************************************** 1430 Command Buffer Management 1431 ******************************************************************************** 1432 ********************************************************************************/ 1433 1434 /******************************************************************************** 1435 * Get a new command buffer. 1436 * 1437 * This may return NULL in low-memory cases. 1438 * 1439 * If possible, we recycle a command buffer that's been used before. 1440 */ 1441 struct amr_command * 1442 amr_alloccmd(struct amr_softc *sc) 1443 { 1444 struct amr_command *ac; 1445 1446 debug_called(3); 1447 1448 ac = amr_dequeue_free(sc); 1449 if (ac == NULL) { 1450 amr_alloccmd_cluster(sc); 1451 ac = amr_dequeue_free(sc); 1452 } 1453 if (ac == NULL) 1454 return(NULL); 1455 1456 /* clear out significant fields */ 1457 ac->ac_slot = 0; 1458 ac->ac_status = 0; 1459 bzero(&ac->ac_mailbox, sizeof(struct amr_mailbox)); 1460 ac->ac_flags = 0; 1461 ac->ac_bio = NULL; 1462 ac->ac_data = NULL; 1463 ac->ac_ccb_data = NULL; 1464 ac->ac_complete = NULL; 1465 return(ac); 1466 } 1467 1468 /******************************************************************************** 1469 * Release a command buffer for recycling. 1470 */ 1471 void 1472 amr_releasecmd(struct amr_command *ac) 1473 { 1474 debug_called(3); 1475 1476 amr_enqueue_free(ac); 1477 } 1478 1479 /******************************************************************************** 1480 * Allocate a new command cluster and initialise it. 1481 */ 1482 static void 1483 amr_alloccmd_cluster(struct amr_softc *sc) 1484 { 1485 struct amr_command_cluster *acc; 1486 struct amr_command *ac; 1487 int i; 1488 1489 acc = kmalloc(AMR_CMD_CLUSTERSIZE, M_DEVBUF, M_INTWAIT); 1490 crit_enter(); 1491 TAILQ_INSERT_TAIL(&sc->amr_cmd_clusters, acc, acc_link); 1492 crit_exit(); 1493 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) { 1494 ac = &acc->acc_command[i]; 1495 bzero(ac, sizeof(*ac)); 1496 ac->ac_sc = sc; 1497 if (!bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_dmamap) && 1498 !bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_ccb_dmamap)) 1499 amr_releasecmd(ac); 1500 } 1501 } 1502 1503 /******************************************************************************** 1504 * Free a command cluster 1505 */ 1506 static void 1507 amr_freecmd_cluster(struct amr_command_cluster *acc) 1508 { 1509 struct amr_softc *sc = acc->acc_command[0].ac_sc; 1510 int i; 1511 1512 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) 1513 bus_dmamap_destroy(sc->amr_buffer_dmat, acc->acc_command[i].ac_dmamap); 1514 kfree(acc, M_DEVBUF); 1515 } 1516 1517 /******************************************************************************** 1518 ******************************************************************************** 1519 Interface-specific Shims 1520 ******************************************************************************** 1521 ********************************************************************************/ 1522 1523 /******************************************************************************** 1524 * Tell the controller that the mailbox contains a valid command 1525 */ 1526 static int 1527 amr_quartz_submit_command(struct amr_softc *sc) 1528 { 1529 debug_called(3); 1530 1531 if (AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT) 1532 return(EBUSY); 1533 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1534 return(0); 1535 } 1536 1537 static int 1538 amr_std_submit_command(struct amr_softc *sc) 1539 { 1540 debug_called(3); 1541 1542 if (AMR_SGET_MBSTAT(sc) & AMR_SMBOX_BUSYFLAG) 1543 return(EBUSY); 1544 AMR_SPOST_COMMAND(sc); 1545 return(0); 1546 } 1547 1548 /******************************************************************************** 1549 * Claim any work that the controller has completed; acknowledge completion, 1550 * save details of the completion in (mbsave) 1551 */ 1552 static int 1553 amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1554 { 1555 int worked; 1556 u_int32_t outd; 1557 1558 debug_called(3); 1559 1560 worked = 0; 1561 crit_enter(); 1562 1563 /* work waiting for us? */ 1564 if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) { 1565 1566 /* save mailbox, which contains a list of completed commands */ 1567 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1568 1569 /* acknowledge interrupt */ 1570 AMR_QPUT_ODB(sc, AMR_QODB_READY); 1571 1572 /* acknowledge that we have the commands */ 1573 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1574 1575 #ifndef AMR_QUARTZ_GOFASTER 1576 /* 1577 * This waits for the controller to notice that we've taken the 1578 * command from it. It's very inefficient, and we shouldn't do it, 1579 * but if we remove this code, we stop completing commands under 1580 * load. 1581 * 1582 * Peter J says we shouldn't do this. The documentation says we 1583 * should. Who is right? 1584 */ 1585 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK) 1586 ; /* XXX aiee! what if it dies? */ 1587 #endif 1588 1589 worked = 1; /* got some work */ 1590 } 1591 1592 crit_exit(); 1593 return(worked); 1594 } 1595 1596 static int 1597 amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1598 { 1599 int worked; 1600 u_int8_t istat; 1601 1602 debug_called(3); 1603 1604 worked = 0; 1605 crit_enter(); 1606 1607 /* check for valid interrupt status */ 1608 istat = AMR_SGET_ISTAT(sc); 1609 if ((istat & AMR_SINTR_VALID) != 0) { 1610 AMR_SPUT_ISTAT(sc, istat); /* ack interrupt status */ 1611 1612 /* save mailbox, which contains a list of completed commands */ 1613 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1614 1615 AMR_SACK_INTERRUPT(sc); /* acknowledge we have the mailbox */ 1616 worked = 1; 1617 } 1618 1619 crit_exit(); 1620 return(worked); 1621 } 1622 1623 /******************************************************************************** 1624 * Notify the controller of the mailbox location. 1625 */ 1626 static void 1627 amr_std_attach_mailbox(struct amr_softc *sc) 1628 { 1629 1630 /* program the mailbox physical address */ 1631 AMR_SBYTE_SET(sc, AMR_SMBOX_0, sc->amr_mailboxphys & 0xff); 1632 AMR_SBYTE_SET(sc, AMR_SMBOX_1, (sc->amr_mailboxphys >> 8) & 0xff); 1633 AMR_SBYTE_SET(sc, AMR_SMBOX_2, (sc->amr_mailboxphys >> 16) & 0xff); 1634 AMR_SBYTE_SET(sc, AMR_SMBOX_3, (sc->amr_mailboxphys >> 24) & 0xff); 1635 AMR_SBYTE_SET(sc, AMR_SMBOX_ENABLE, AMR_SMBOX_ADDR); 1636 1637 /* clear any outstanding interrupt and enable interrupts proper */ 1638 AMR_SACK_INTERRUPT(sc); 1639 AMR_SENABLE_INTR(sc); 1640 } 1641 1642 #ifdef AMR_BOARD_INIT 1643 /******************************************************************************** 1644 * Initialise the controller 1645 */ 1646 static int 1647 amr_quartz_init(struct amr_softc *sc) 1648 { 1649 int status, ostatus; 1650 1651 device_printf(sc->amr_dev, "initial init status %x\n", AMR_QGET_INITSTATUS(sc)); 1652 1653 AMR_QRESET(sc); 1654 1655 ostatus = 0xff; 1656 while ((status = AMR_QGET_INITSTATUS(sc)) != AMR_QINIT_DONE) { 1657 if (status != ostatus) { 1658 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_qinit, status)); 1659 ostatus = status; 1660 } 1661 switch (status) { 1662 case AMR_QINIT_NOMEM: 1663 return(ENOMEM); 1664 1665 case AMR_QINIT_SCAN: 1666 /* XXX we could print channel/target here */ 1667 break; 1668 } 1669 } 1670 return(0); 1671 } 1672 1673 static int 1674 amr_std_init(struct amr_softc *sc) 1675 { 1676 int status, ostatus; 1677 1678 device_printf(sc->amr_dev, "initial init status %x\n", AMR_SGET_INITSTATUS(sc)); 1679 1680 AMR_SRESET(sc); 1681 1682 ostatus = 0xff; 1683 while ((status = AMR_SGET_INITSTATUS(sc)) != AMR_SINIT_DONE) { 1684 if (status != ostatus) { 1685 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_sinit, status)); 1686 ostatus = status; 1687 } 1688 switch (status) { 1689 case AMR_SINIT_NOMEM: 1690 return(ENOMEM); 1691 1692 case AMR_SINIT_INPROG: 1693 /* XXX we could print channel/target here? */ 1694 break; 1695 } 1696 } 1697 return(0); 1698 } 1699 #endif 1700 1701 /******************************************************************************** 1702 ******************************************************************************** 1703 Debugging 1704 ******************************************************************************** 1705 ********************************************************************************/ 1706 1707 /******************************************************************************** 1708 * Identify the controller and print some information about it. 1709 */ 1710 static void 1711 amr_describe_controller(struct amr_softc *sc) 1712 { 1713 struct amr_prodinfo *ap; 1714 struct amr_enquiry *ae; 1715 char *prod; 1716 1717 /* 1718 * Try to get 40LD product info, which tells us what the card is labelled as. 1719 */ 1720 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) != NULL) { 1721 device_printf(sc->amr_dev, "<LSILogic %.80s> Firmware %.16s, BIOS %.16s, %dMB RAM\n", 1722 ap->ap_product, ap->ap_firmware, ap->ap_bios, 1723 ap->ap_memsize); 1724 1725 kfree(ap, M_DEVBUF); 1726 return; 1727 } 1728 1729 /* 1730 * Try 8LD extended ENQUIRY to get controller signature, and use lookup table. 1731 */ 1732 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) != NULL) { 1733 prod = amr_describe_code(amr_table_adaptertype, ae->ae_signature); 1734 1735 } else if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) != NULL) { 1736 1737 /* 1738 * Try to work it out based on the PCI signatures. 1739 */ 1740 switch (pci_get_device(sc->amr_dev)) { 1741 case 0x9010: 1742 prod = "Series 428"; 1743 break; 1744 case 0x9060: 1745 prod = "Series 434"; 1746 break; 1747 default: 1748 prod = "unknown controller"; 1749 break; 1750 } 1751 } else { 1752 device_printf(sc->amr_dev, "<unsupported controller>\n"); 1753 return; 1754 } 1755 1756 /* 1757 * HP NetRaid controllers have a special encoding of the firmware and 1758 * BIOS versions. The AMI version seems to have it as strings whereas 1759 * the HP version does it with a leading uppercase character and two 1760 * binary numbers. 1761 */ 1762 1763 if(ae->ae_adapter.aa_firmware[2] >= 'A' && 1764 ae->ae_adapter.aa_firmware[2] <= 'Z' && 1765 ae->ae_adapter.aa_firmware[1] < ' ' && 1766 ae->ae_adapter.aa_firmware[0] < ' ' && 1767 ae->ae_adapter.aa_bios[2] >= 'A' && 1768 ae->ae_adapter.aa_bios[2] <= 'Z' && 1769 ae->ae_adapter.aa_bios[1] < ' ' && 1770 ae->ae_adapter.aa_bios[0] < ' ') { 1771 1772 /* this looks like we have an HP NetRaid version of the MegaRaid */ 1773 1774 if(ae->ae_signature == AMR_SIG_438) { 1775 /* the AMI 438 is a NetRaid 3si in HP-land */ 1776 prod = "HP NetRaid 3si"; 1777 } 1778 1779 device_printf(sc->amr_dev, "<%s> Firmware %c.%02d.%02d, BIOS %c.%02d.%02d, %dMB RAM\n", 1780 prod, ae->ae_adapter.aa_firmware[2], 1781 ae->ae_adapter.aa_firmware[1], 1782 ae->ae_adapter.aa_firmware[0], 1783 ae->ae_adapter.aa_bios[2], 1784 ae->ae_adapter.aa_bios[1], 1785 ae->ae_adapter.aa_bios[0], 1786 ae->ae_adapter.aa_memorysize); 1787 } else { 1788 device_printf(sc->amr_dev, "<%s> Firmware %.4s, BIOS %.4s, %dMB RAM\n", 1789 prod, ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios, 1790 ae->ae_adapter.aa_memorysize); 1791 } 1792 kfree(ae, M_DEVBUF); 1793 } 1794 1795 int 1796 amr_dump_blocks(struct amr_softc *sc, int unit, u_int64_t lba, void *data, int blks) 1797 { 1798 1799 struct amr_command *ac; 1800 int error = 1; 1801 1802 debug_called(1); 1803 1804 sc->amr_state &= ~AMR_STATE_INTEN; 1805 1806 /* get ourselves a command buffer */ 1807 if ((ac = amr_alloccmd(sc)) == NULL) 1808 goto out; 1809 /* set command flags */ 1810 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 1811 1812 /* point the command at our data */ 1813 ac->ac_data = data; 1814 ac->ac_length = blks * AMR_BLKSIZE; 1815 1816 /* build the command proper */ 1817 ac->ac_mailbox.mb_command = AMR_CMD_LWRITE; 1818 ac->ac_mailbox.mb_blkcount = blks; 1819 ac->ac_mailbox.mb_lba = lba; 1820 ac->ac_mailbox.mb_drive = unit; 1821 1822 /* can't assume that interrupts are going to work here, so play it safe */ 1823 if (sc->amr_poll_command(ac)) 1824 goto out; 1825 error = ac->ac_status; 1826 1827 out: 1828 if (ac != NULL) 1829 amr_releasecmd(ac); 1830 1831 sc->amr_state |= AMR_STATE_INTEN; 1832 1833 return (error); 1834 } 1835 1836 1837 #ifdef AMR_DEBUG 1838 /******************************************************************************** 1839 * Print the command (ac) in human-readable format 1840 */ 1841 #if 0 1842 static void 1843 amr_printcommand(struct amr_command *ac) 1844 { 1845 struct amr_softc *sc = ac->ac_sc; 1846 struct amr_sgentry *sg; 1847 int i; 1848 1849 device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n", 1850 ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive); 1851 device_printf(sc->amr_dev, "blkcount %d lba %d\n", 1852 ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba); 1853 device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length); 1854 device_printf(sc->amr_dev, "sg physaddr %08x nsg %d\n", 1855 ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem); 1856 device_printf(sc->amr_dev, "ccb %p bio %p\n", ac->ac_ccb_data, ac->ac_bio); 1857 1858 /* get base address of s/g table */ 1859 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1860 for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++) 1861 device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count); 1862 } 1863 #endif 1864 #endif 1865