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 1.25 2008/01/06 16:55:50 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 dev_ops_add(&amr_ops, -1, device_get_unit(sc->amr_dev)); 240 sc->amr_dev_t = make_dev(&amr_ops, device_get_unit(sc->amr_dev), 241 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 242 "amr%d", device_get_unit(sc->amr_dev)); 243 sc->amr_dev_t->si_drv1 = sc; 244 reference_dev(sc->amr_dev_t); 245 246 /* 247 * Schedule ourselves to bring the controller up once interrupts are 248 * available. 249 */ 250 bzero(&sc->amr_ich, sizeof(struct intr_config_hook)); 251 sc->amr_ich.ich_func = amr_startup; 252 sc->amr_ich.ich_arg = sc; 253 sc->amr_ich.ich_desc = "amr"; 254 if (config_intrhook_establish(&sc->amr_ich) != 0) { 255 device_printf(sc->amr_dev, "can't establish configuration hook\n"); 256 return(ENOMEM); 257 } 258 259 /* 260 * Print a little information about the controller. 261 */ 262 amr_describe_controller(sc); 263 264 debug(2, "attach complete"); 265 return(0); 266 } 267 268 /******************************************************************************** 269 * Locate disk resources and attach children to them. 270 */ 271 static void 272 amr_startup(void *arg) 273 { 274 struct amr_softc *sc = (struct amr_softc *)arg; 275 struct amr_logdrive *dr; 276 int i, error; 277 278 debug_called(1); 279 callout_init(&sc->amr_timeout); 280 281 /* pull ourselves off the intrhook chain */ 282 config_intrhook_disestablish(&sc->amr_ich); 283 284 /* get up-to-date drive information */ 285 if (amr_query_controller(sc)) { 286 device_printf(sc->amr_dev, "can't scan controller for drives\n"); 287 return; 288 } 289 290 /* iterate over available drives */ 291 for (i = 0, dr = &sc->amr_drive[0]; (i < AMR_MAXLD) && (dr->al_size != 0xffffffff); i++, dr++) { 292 /* are we already attached to this drive? */ 293 if (dr->al_disk == 0) { 294 /* generate geometry information */ 295 if (dr->al_size > 0x200000) { /* extended translation? */ 296 dr->al_heads = 255; 297 dr->al_sectors = 63; 298 } else { 299 dr->al_heads = 64; 300 dr->al_sectors = 32; 301 } 302 dr->al_cylinders = dr->al_size / (dr->al_heads * dr->al_sectors); 303 304 dr->al_disk = device_add_child(sc->amr_dev, NULL, -1); 305 if (dr->al_disk == 0) 306 device_printf(sc->amr_dev, "device_add_child failed\n"); 307 device_set_ivars(dr->al_disk, dr); 308 } 309 } 310 311 if ((error = bus_generic_attach(sc->amr_dev)) != 0) 312 device_printf(sc->amr_dev, "bus_generic_attach returned %d\n", error); 313 314 /* mark controller back up */ 315 sc->amr_state &= ~AMR_STATE_SHUTDOWN; 316 317 /* interrupts will be enabled before we do anything more */ 318 sc->amr_state |= AMR_STATE_INTEN; 319 320 /* 321 * Start the timeout routine. 322 */ 323 /* callout_reset(&sc->amr_timeout, hz, amr_periodic, sc); */ 324 325 return; 326 } 327 328 /******************************************************************************* 329 * Free resources associated with a controller instance 330 */ 331 void 332 amr_free(struct amr_softc *sc) 333 { 334 struct amr_command_cluster *acc; 335 336 /* detach from CAM */ 337 amr_cam_detach(sc); 338 339 /* cancel status timeout */ 340 callout_stop(&sc->amr_timeout); 341 342 /* throw away any command buffers */ 343 while ((acc = TAILQ_FIRST(&sc->amr_cmd_clusters)) != NULL) { 344 TAILQ_REMOVE(&sc->amr_cmd_clusters, acc, acc_link); 345 amr_freecmd_cluster(acc); 346 } 347 348 /* destroy control device */ 349 if( sc->amr_dev_t != (cdev_t)NULL) 350 destroy_dev(sc->amr_dev_t); 351 dev_ops_remove(&amr_ops, -1, device_get_unit(sc->amr_dev)); 352 } 353 354 /******************************************************************************* 355 * Receive a bio structure from a child device and queue it on a particular 356 * disk resource, then poke the disk resource to start as much work as it can. 357 */ 358 int 359 amr_submit_bio(struct amr_softc *sc, struct bio *bio) 360 { 361 debug_called(2); 362 363 amr_enqueue_bio(sc, bio); 364 amr_startio(sc); 365 return(0); 366 } 367 368 /******************************************************************************** 369 * Accept an open operation on the control device. 370 */ 371 static int 372 amr_open(struct dev_open_args *ap) 373 { 374 cdev_t dev = ap->a_head.a_dev; 375 int unit = minor(dev); 376 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 377 378 debug_called(1); 379 380 sc->amr_state |= AMR_STATE_OPEN; 381 return(0); 382 } 383 384 /******************************************************************************** 385 * Accept the last close on the control device. 386 */ 387 static int 388 amr_close(struct dev_close_args *ap) 389 { 390 cdev_t dev = ap->a_head.a_dev; 391 int unit = minor(dev); 392 struct amr_softc *sc = devclass_get_softc(devclass_find("amr"), unit); 393 394 debug_called(1); 395 396 sc->amr_state &= ~AMR_STATE_OPEN; 397 return (0); 398 } 399 400 /******************************************************************************** 401 * Handle controller-specific control operations. 402 */ 403 static int 404 amr_ioctl(struct dev_ioctl_args *ap) 405 { 406 cdev_t dev = ap->a_head.a_dev; 407 struct amr_softc *sc = (struct amr_softc *)dev->si_drv1; 408 int *arg = (int *)ap->a_data; 409 struct amr_user_ioctl *au = (struct amr_user_ioctl *)ap->a_data; 410 struct amr_command *ac; 411 struct amr_mailbox_ioctl *mbi; 412 struct amr_passthrough *apt; 413 void *dp; 414 int error; 415 416 debug_called(1); 417 418 error = 0; 419 dp = NULL; 420 apt = NULL; 421 ac = NULL; 422 switch(ap->a_cmd) { 423 424 case AMR_IO_VERSION: 425 debug(1, "AMR_IO_VERSION"); 426 *arg = AMR_IO_VERSION_NUMBER; 427 break; 428 429 case AMR_IO_COMMAND: 430 debug(1, "AMR_IO_COMMAND 0x%x", au->au_cmd[0]); 431 /* handle inbound data buffer */ 432 if (au->au_length != 0) { 433 dp = kmalloc(au->au_length, M_DEVBUF, M_WAITOK); 434 if ((error = copyin(au->au_buffer, dp, au->au_length)) != 0) 435 break; 436 debug(2, "copyin %ld bytes from %p -> %p", au->au_length, au->au_buffer, dp); 437 } 438 439 if ((ac = amr_alloccmd(sc)) == NULL) { 440 error = ENOMEM; 441 break; 442 } 443 444 /* handle SCSI passthrough command */ 445 if (au->au_cmd[0] == AMR_CMD_PASS) { 446 apt = kmalloc(sizeof(*apt), M_DEVBUF, M_WAITOK | M_ZERO); 447 448 /* copy cdb */ 449 apt->ap_cdb_length = au->au_cmd[2]; 450 bcopy(&au->au_cmd[3], &apt->ap_cdb[0], apt->ap_cdb_length); 451 452 /* build passthrough */ 453 apt->ap_timeout = au->au_cmd[apt->ap_cdb_length + 3] & 0x07; 454 apt->ap_ars = (au->au_cmd[apt->ap_cdb_length + 3] & 0x08) ? 1 : 0; 455 apt->ap_islogical = (au->au_cmd[apt->ap_cdb_length + 3] & 0x80) ? 1 : 0; 456 apt->ap_logical_drive_no = au->au_cmd[apt->ap_cdb_length + 4]; 457 apt->ap_channel = au->au_cmd[apt->ap_cdb_length + 5]; 458 apt->ap_scsi_id = au->au_cmd[apt->ap_cdb_length + 6]; 459 apt->ap_request_sense_length = 14; 460 apt->ap_data_transfer_length = au->au_length; 461 /* XXX what about the request-sense area? does the caller want it? */ 462 463 /* build command */ 464 ac->ac_data = apt; 465 ac->ac_length = sizeof(*apt); 466 ac->ac_flags |= AMR_CMD_DATAOUT; 467 ac->ac_ccb_data = dp; 468 ac->ac_ccb_length = au->au_length; 469 if (au->au_direction & AMR_IO_READ) 470 ac->ac_flags |= AMR_CMD_CCB_DATAIN; 471 if (au->au_direction & AMR_IO_WRITE) 472 ac->ac_flags |= AMR_CMD_CCB_DATAOUT; 473 474 ac->ac_mailbox.mb_command = AMR_CMD_PASS; 475 476 } else { 477 /* direct command to controller */ 478 mbi = (struct amr_mailbox_ioctl *)&ac->ac_mailbox; 479 480 /* copy pertinent mailbox items */ 481 mbi->mb_command = au->au_cmd[0]; 482 mbi->mb_channel = au->au_cmd[1]; 483 mbi->mb_param = au->au_cmd[2]; 484 mbi->mb_pad[0] = au->au_cmd[3]; 485 mbi->mb_drive = au->au_cmd[4]; 486 487 /* build the command */ 488 ac->ac_data = dp; 489 ac->ac_length = au->au_length; 490 if (au->au_direction & AMR_IO_READ) 491 ac->ac_flags |= AMR_CMD_DATAIN; 492 if (au->au_direction & AMR_IO_WRITE) 493 ac->ac_flags |= AMR_CMD_DATAOUT; 494 } 495 496 /* run the command */ 497 if ((error = amr_wait_command(ac)) != 0) 498 break; 499 500 /* copy out data and set status */ 501 if (au->au_length != 0) 502 error = copyout(dp, au->au_buffer, au->au_length); 503 debug(2, "copyout %ld bytes from %p -> %p", au->au_length, dp, au->au_buffer); 504 if (dp != NULL) 505 debug(2, "%16d", (int)dp); 506 au->au_status = ac->ac_status; 507 break; 508 509 default: 510 debug(1, "unknown ioctl 0x%lx", cmd); 511 error = ENOIOCTL; 512 break; 513 } 514 515 if (dp != NULL) 516 kfree(dp, M_DEVBUF); 517 if (apt != NULL) 518 kfree(apt, M_DEVBUF); 519 if (ac != NULL) 520 amr_releasecmd(ac); 521 return(error); 522 } 523 524 /******************************************************************************** 525 ******************************************************************************** 526 Status Monitoring 527 ******************************************************************************** 528 ********************************************************************************/ 529 530 /******************************************************************************** 531 * Perform a periodic check of the controller status 532 */ 533 static void 534 amr_periodic(void *data) 535 { 536 struct amr_softc *sc = (struct amr_softc *)data; 537 538 debug_called(2); 539 540 /* XXX perform periodic status checks here */ 541 542 /* compensate for missed interrupts */ 543 amr_done(sc); 544 545 /* reschedule */ 546 callout_reset(&sc->amr_timeout, hz, amr_periodic, sc); 547 } 548 549 /******************************************************************************** 550 ******************************************************************************** 551 Command Wrappers 552 ******************************************************************************** 553 ********************************************************************************/ 554 555 /******************************************************************************** 556 * Interrogate the controller for the operational parameters we require. 557 */ 558 static int 559 amr_query_controller(struct amr_softc *sc) 560 { 561 struct amr_enquiry3 *aex; 562 struct amr_prodinfo *ap; 563 struct amr_enquiry *ae; 564 int ldrv; 565 566 /* 567 * If we haven't found the real limit yet, let us have a couple of commands in 568 * order to be able to probe. 569 */ 570 if (sc->amr_maxio == 0) 571 sc->amr_maxio = 2; 572 573 /* 574 * Greater than 10 byte cdb support 575 */ 576 sc->support_ext_cdb = amr_support_ext_cdb(sc); 577 578 if(sc->support_ext_cdb) { 579 debug(2,"supports extended CDBs."); 580 } 581 582 /* 583 * Try to issue an ENQUIRY3 command 584 */ 585 if ((aex = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_ENQ3, 586 AMR_CONFIG_ENQ3_SOLICITED_FULL)) != NULL) { 587 588 /* 589 * Fetch current state of logical drives. 590 */ 591 for (ldrv = 0; ldrv < aex->ae_numldrives; ldrv++) { 592 sc->amr_drive[ldrv].al_size = aex->ae_drivesize[ldrv]; 593 sc->amr_drive[ldrv].al_state = aex->ae_drivestate[ldrv]; 594 sc->amr_drive[ldrv].al_properties = aex->ae_driveprop[ldrv]; 595 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 596 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 597 } 598 kfree(aex, M_DEVBUF); 599 600 /* 601 * Get product info for channel count. 602 */ 603 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) == NULL) { 604 device_printf(sc->amr_dev, "can't obtain product data from controller\n"); 605 return(1); 606 } 607 sc->amr_maxdrives = 40; 608 sc->amr_maxchan = ap->ap_nschan; 609 sc->amr_maxio = ap->ap_maxio; 610 sc->amr_type |= AMR_TYPE_40LD; 611 kfree(ap, M_DEVBUF); 612 613 } else { 614 615 /* failed, try the 8LD ENQUIRY commands */ 616 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) == NULL) { 617 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) == NULL) { 618 device_printf(sc->amr_dev, "can't obtain configuration data from controller\n"); 619 return(1); 620 } 621 ae->ae_signature = 0; 622 } 623 624 /* 625 * Fetch current state of logical drives. 626 */ 627 for (ldrv = 0; ldrv < ae->ae_ldrv.al_numdrives; ldrv++) { 628 sc->amr_drive[ldrv].al_size = ae->ae_ldrv.al_size[ldrv]; 629 sc->amr_drive[ldrv].al_state = ae->ae_ldrv.al_state[ldrv]; 630 sc->amr_drive[ldrv].al_properties = ae->ae_ldrv.al_properties[ldrv]; 631 debug(2, " drive %d: %d state %x properties %x\n", ldrv, sc->amr_drive[ldrv].al_size, 632 sc->amr_drive[ldrv].al_state, sc->amr_drive[ldrv].al_properties); 633 } 634 635 sc->amr_maxdrives = 8; 636 sc->amr_maxchan = ae->ae_adapter.aa_channels; 637 sc->amr_maxio = ae->ae_adapter.aa_maxio; 638 kfree(ae, M_DEVBUF); 639 } 640 641 /* 642 * Mark remaining drives as unused. 643 */ 644 for (; ldrv < AMR_MAXLD; ldrv++) 645 sc->amr_drive[ldrv].al_size = 0xffffffff; 646 647 /* 648 * Cap the maximum number of outstanding I/Os. AMI's Linux driver doesn't trust 649 * the controller's reported value, and lockups have been seen when we do. 650 */ 651 sc->amr_maxio = imin(sc->amr_maxio, AMR_LIMITCMD); 652 653 return(0); 654 } 655 656 /******************************************************************************** 657 * Run a generic enquiry-style command. 658 */ 659 static void * 660 amr_enquiry(struct amr_softc *sc, size_t bufsize, u_int8_t cmd, u_int8_t cmdsub, u_int8_t cmdqual) 661 { 662 struct amr_command *ac; 663 void *result; 664 u_int8_t *mbox; 665 int error; 666 667 debug_called(1); 668 669 error = 1; 670 result = NULL; 671 672 /* get ourselves a command buffer */ 673 if ((ac = amr_alloccmd(sc)) == NULL) 674 goto out; 675 /* allocate the response structure */ 676 result = kmalloc(bufsize, M_DEVBUF, M_INTWAIT); 677 /* set command flags */ 678 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 679 680 /* point the command at our data */ 681 ac->ac_data = result; 682 ac->ac_length = bufsize; 683 684 /* build the command proper */ 685 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 686 mbox[0] = cmd; 687 mbox[2] = cmdsub; 688 mbox[3] = cmdqual; 689 690 /* can't assume that interrupts are going to work here, so play it safe */ 691 if (sc->amr_poll_command(ac)) 692 goto out; 693 error = ac->ac_status; 694 695 out: 696 if (ac != NULL) 697 amr_releasecmd(ac); 698 if ((error != 0) && (result != NULL)) { 699 kfree(result, M_DEVBUF); 700 result = NULL; 701 } 702 return(result); 703 } 704 705 /******************************************************************************** 706 * Flush the controller's internal cache, return status. 707 */ 708 int 709 amr_flush(struct amr_softc *sc) 710 { 711 struct amr_command *ac; 712 int error; 713 714 /* get ourselves a command buffer */ 715 error = 1; 716 if ((ac = amr_alloccmd(sc)) == NULL) 717 goto out; 718 /* set command flags */ 719 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 720 721 /* build the command proper */ 722 ac->ac_mailbox.mb_command = AMR_CMD_FLUSH; 723 724 /* we have to poll, as the system may be going down or otherwise damaged */ 725 if (sc->amr_poll_command(ac)) 726 goto out; 727 error = ac->ac_status; 728 729 out: 730 if (ac != NULL) 731 amr_releasecmd(ac); 732 return(error); 733 } 734 735 /******************************************************************************** 736 * Detect extented cdb >> greater than 10 byte cdb support 737 * returns '1' means this support exist 738 * returns '0' means this support doesn't exist 739 */ 740 static int 741 amr_support_ext_cdb(struct amr_softc *sc) 742 { 743 struct amr_command *ac; 744 u_int8_t *mbox; 745 int error; 746 747 /* get ourselves a command buffer */ 748 error = 0; 749 if ((ac = amr_alloccmd(sc)) == NULL) 750 goto out; 751 /* set command flags */ 752 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 753 754 /* build the command proper */ 755 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */ 756 mbox[0] = 0xA4; 757 mbox[2] = 0x16; 758 759 760 /* we have to poll, as the system may be going down or otherwise damaged */ 761 if (sc->amr_poll_command(ac)) 762 goto out; 763 if( ac->ac_status == AMR_STATUS_SUCCESS ) { 764 error = 1; 765 } 766 767 out: 768 if (ac != NULL) 769 amr_releasecmd(ac); 770 return(error); 771 } 772 773 /******************************************************************************** 774 * Try to find I/O work for the controller from one or more of the work queues. 775 * 776 * We make the assumption that if the controller is not ready to take a command 777 * at some given time, it will generate an interrupt at some later time when 778 * it is. 779 */ 780 void 781 amr_startio(struct amr_softc *sc) 782 { 783 struct amr_command *ac; 784 785 /* spin until something prevents us from doing any work */ 786 for (;;) { 787 788 /* try to get a ready command */ 789 ac = amr_dequeue_ready(sc); 790 791 /* if that failed, build a command from a bio */ 792 if (ac == NULL) 793 (void)amr_bio_command(sc, &ac); 794 795 /* if that failed, build a command from a ccb */ 796 if (ac == NULL) 797 (void)amr_cam_command(sc, &ac); 798 799 /* if we don't have anything to do, give up */ 800 if (ac == NULL) 801 break; 802 803 /* try to give the command to the controller; if this fails save it for later and give up */ 804 if (amr_start(ac)) { 805 debug(2, "controller busy, command deferred"); 806 amr_requeue_ready(ac); /* XXX schedule retry very soon? */ 807 break; 808 } 809 } 810 } 811 812 /******************************************************************************** 813 * Handle completion of an I/O command. 814 */ 815 static void 816 amr_completeio(struct amr_command *ac) 817 { 818 struct amr_softc *sc = ac->ac_sc; 819 820 if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */ 821 ac->ac_bio->bio_buf->b_error = EIO; 822 ac->ac_bio->bio_buf->b_flags |= B_ERROR; 823 824 device_printf(sc->amr_dev, "I/O error - 0x%x\n", ac->ac_status); 825 /* amr_printcommand(ac);*/ 826 } 827 amrd_intr(ac->ac_bio); 828 amr_releasecmd(ac); 829 } 830 831 /******************************************************************************** 832 ******************************************************************************** 833 Command Processing 834 ******************************************************************************** 835 ********************************************************************************/ 836 837 /******************************************************************************** 838 * Convert a bio off the top of the bio queue into a command. 839 */ 840 static int 841 amr_bio_command(struct amr_softc *sc, struct amr_command **acp) 842 { 843 struct amr_command *ac; 844 struct amrd_softc *amrd; 845 struct bio *bio; 846 int error; 847 int blkcount; 848 int driveno; 849 int cmd; 850 u_int64_t lba; 851 852 ac = NULL; 853 error = 0; 854 855 /* get a bio to work on */ 856 if ((bio = amr_dequeue_bio(sc)) == NULL) 857 goto out; 858 859 /* get a command */ 860 if ((ac = amr_alloccmd(sc)) == NULL) { 861 error = ENOMEM; 862 goto out; 863 } 864 865 /* connect the bio to the command */ 866 ac->ac_complete = amr_completeio; 867 ac->ac_bio = bio; 868 ac->ac_data = bio->bio_buf->b_data; 869 ac->ac_length = bio->bio_buf->b_bcount; 870 if (bio->bio_buf->b_cmd == BUF_CMD_READ) { 871 ac->ac_flags |= AMR_CMD_DATAIN; 872 cmd = AMR_CMD_LREAD; 873 } else { 874 ac->ac_flags |= AMR_CMD_DATAOUT; 875 cmd = AMR_CMD_LWRITE; 876 } 877 amrd = (struct amrd_softc *)bio->bio_driver_info; 878 driveno = amrd->amrd_drive - sc->amr_drive; 879 blkcount = (bio->bio_buf->b_bcount + AMR_BLKSIZE - 1) / AMR_BLKSIZE; 880 lba = bio->bio_offset / AMR_BLKSIZE; 881 KKASSERT(lba < 0x100000000ULL); 882 883 ac->ac_mailbox.mb_command = cmd; 884 ac->ac_mailbox.mb_blkcount = blkcount; 885 ac->ac_mailbox.mb_lba = lba; 886 ac->ac_mailbox.mb_drive = driveno; 887 /* we fill in the s/g related data when the command is mapped */ 888 889 if ((lba + blkcount) > sc->amr_drive[driveno].al_size) 890 device_printf(sc->amr_dev, "I/O beyond end of unit (%lld,%d > %lu)\n", 891 lba, blkcount, 892 (u_long)sc->amr_drive[driveno].al_size); 893 894 out: 895 if (error != 0) { 896 if (ac != NULL) 897 amr_releasecmd(ac); 898 if (bio != NULL) /* this breaks ordering... */ 899 amr_enqueue_bio(sc, bio); 900 } 901 *acp = ac; 902 return(error); 903 } 904 905 /******************************************************************************** 906 * Take a command, submit it to the controller and sleep until it completes 907 * or fails. Interrupts must be enabled, returns nonzero on error. 908 */ 909 static int 910 amr_wait_command(struct amr_command *ac) 911 { 912 int error, count; 913 914 debug_called(1); 915 916 ac->ac_complete = NULL; 917 ac->ac_flags |= AMR_CMD_SLEEP; 918 if ((error = amr_start(ac)) != 0) 919 return(error); 920 921 count = 0; 922 /* XXX better timeout? */ 923 while ((ac->ac_flags & AMR_CMD_BUSY) && (count < 30)) { 924 tsleep(ac, PCATCH, "amrwcmd", hz); 925 } 926 return(0); 927 } 928 929 /******************************************************************************** 930 * Take a command, submit it to the controller and busy-wait for it to return. 931 * Returns nonzero on error. Can be safely called with interrupts enabled. 932 */ 933 static int 934 amr_std_poll_command(struct amr_command *ac) 935 { 936 struct amr_softc *sc = ac->ac_sc; 937 int error, count; 938 939 debug_called(2); 940 941 ac->ac_complete = NULL; 942 if ((error = amr_start(ac)) != 0) 943 return(error); 944 945 count = 0; 946 do { 947 /* 948 * Poll for completion, although the interrupt handler may beat us to it. 949 * Note that the timeout here is somewhat arbitrary. 950 */ 951 amr_done(sc); 952 DELAY(1000); 953 } while ((ac->ac_flags & AMR_CMD_BUSY) && (count++ < 1000)); 954 if (!(ac->ac_flags & AMR_CMD_BUSY)) { 955 error = 0; 956 } else { 957 /* XXX the slot is now marked permanently busy */ 958 error = EIO; 959 device_printf(sc->amr_dev, "polled command timeout\n"); 960 } 961 return(error); 962 } 963 964 /******************************************************************************** 965 * Take a command, submit it to the controller and busy-wait for it to return. 966 * Returns nonzero on error. Can be safely called with interrupts enabled. 967 */ 968 static int 969 amr_quartz_poll_command(struct amr_command *ac) 970 { 971 struct amr_softc *sc = ac->ac_sc; 972 int error,count; 973 974 debug_called(2); 975 976 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 977 amr_mapcmd(ac); 978 979 crit_enter(); 980 981 if (sc->amr_state & AMR_STATE_INTEN) { 982 count=0; 983 while (sc->amr_busyslots) { 984 tsleep(sc, PCATCH, "amrpoll", hz); 985 if(count++>10) { 986 break; 987 } 988 } 989 990 if(sc->amr_busyslots) { 991 device_printf(sc->amr_dev, "adapter is busy\n"); 992 crit_exit(); 993 amr_unmapcmd(ac); 994 ac->ac_status=0; 995 return(1); 996 } 997 } 998 999 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 1000 1001 /* clear the poll/ack fields in the mailbox */ 1002 sc->amr_mailbox->mb_ident = 0xFE; 1003 sc->amr_mailbox->mb_nstatus = 0xFF; 1004 sc->amr_mailbox->mb_status = 0xFF; 1005 sc->amr_mailbox->mb_poll = 0; 1006 sc->amr_mailbox->mb_ack = 0; 1007 sc->amr_mailbox->mb_busy = 1; 1008 1009 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1010 1011 while(sc->amr_mailbox->mb_nstatus == 0xFF); 1012 while(sc->amr_mailbox->mb_status == 0xFF); 1013 ac->ac_status=sc->amr_mailbox->mb_status; 1014 error = (ac->ac_status !=AMR_STATUS_SUCCESS) ? 1:0; 1015 while(sc->amr_mailbox->mb_poll != 0x77); 1016 sc->amr_mailbox->mb_poll = 0; 1017 sc->amr_mailbox->mb_ack = 0x77; 1018 1019 /* acknowledge that we have the commands */ 1020 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1021 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK); 1022 1023 crit_exit(); 1024 1025 /* unmap the command's data buffer */ 1026 amr_unmapcmd(ac); 1027 1028 return(error); 1029 } 1030 1031 /******************************************************************************** 1032 * Get a free command slot for a command if it doesn't already have one. 1033 * 1034 * May be safely called multiple times for a given command. 1035 */ 1036 static int 1037 amr_getslot(struct amr_command *ac) 1038 { 1039 struct amr_softc *sc = ac->ac_sc; 1040 int slot, limit, error; 1041 1042 debug_called(3); 1043 1044 /* if the command already has a slot, don't try to give it another one */ 1045 if (ac->ac_slot != 0) 1046 return(0); 1047 1048 /* enforce slot usage limit */ 1049 limit = (ac->ac_flags & AMR_CMD_PRIORITY) ? sc->amr_maxio : sc->amr_maxio - 4; 1050 if (sc->amr_busyslots > limit) 1051 return(EBUSY); 1052 1053 /* 1054 * Allocate a slot. XXX linear scan is slow 1055 */ 1056 error = EBUSY; 1057 crit_enter(); 1058 for (slot = 0; slot < sc->amr_maxio; slot++) { 1059 if (sc->amr_busycmd[slot] == NULL) { 1060 sc->amr_busycmd[slot] = ac; 1061 sc->amr_busyslots++; 1062 ac->ac_slot = slot; 1063 error = 0; 1064 break; 1065 } 1066 } 1067 crit_exit(); 1068 1069 return(error); 1070 } 1071 1072 /******************************************************************************** 1073 * Map/unmap (ac)'s data in the controller's addressable space as required. 1074 * 1075 * These functions may be safely called multiple times on a given command. 1076 */ 1077 static void 1078 amr_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1079 { 1080 struct amr_command *ac = (struct amr_command *)arg; 1081 struct amr_softc *sc = ac->ac_sc; 1082 struct amr_sgentry *sg; 1083 int i; 1084 u_int8_t *sgc; 1085 1086 debug_called(3); 1087 1088 /* get base address of s/g table */ 1089 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1090 1091 /* save data physical address */ 1092 ac->ac_dataphys = segs[0].ds_addr; 1093 1094 /* for AMR_CMD_CONFIG the s/g count goes elsewhere */ 1095 if (ac->ac_mailbox.mb_command == AMR_CMD_CONFIG) { 1096 sgc = &(((struct amr_mailbox_ioctl *)&ac->ac_mailbox)->mb_param); 1097 } else { 1098 sgc = &ac->ac_mailbox.mb_nsgelem; 1099 } 1100 1101 /* decide whether we need to populate the s/g table */ 1102 if (nsegments < 2) { 1103 *sgc = 0; 1104 ac->ac_mailbox.mb_nsgelem = 0; 1105 ac->ac_mailbox.mb_physaddr = ac->ac_dataphys; 1106 } else { 1107 ac->ac_mailbox.mb_nsgelem = nsegments; 1108 *sgc = nsegments; 1109 ac->ac_mailbox.mb_physaddr = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1110 for (i = 0; i < nsegments; i++, sg++) { 1111 sg->sg_addr = segs[i].ds_addr; 1112 sg->sg_count = segs[i].ds_len; 1113 } 1114 } 1115 } 1116 1117 static void 1118 amr_setup_ccbmap(void *arg, bus_dma_segment_t *segs, int nsegments, int error) 1119 { 1120 struct amr_command *ac = (struct amr_command *)arg; 1121 struct amr_softc *sc = ac->ac_sc; 1122 struct amr_sgentry *sg; 1123 struct amr_passthrough *ap = (struct amr_passthrough *)ac->ac_data; 1124 struct amr_ext_passthrough *aep = (struct amr_ext_passthrough *)ac->ac_data; 1125 int i; 1126 1127 /* get base address of s/g table */ 1128 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1129 1130 /* decide whether we need to populate the s/g table */ 1131 if( ac->ac_mailbox.mb_command == AMR_CMD_EXTPASS ) { 1132 if (nsegments < 2) { 1133 aep->ap_no_sg_elements = 0; 1134 aep->ap_data_transfer_address = segs[0].ds_addr; 1135 } else { 1136 /* save s/g table information in passthrough */ 1137 aep->ap_no_sg_elements = nsegments; 1138 aep->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1139 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1140 for (i = 0; i < nsegments; i++, sg++) { 1141 sg->sg_addr = segs[i].ds_addr; 1142 sg->sg_count = segs[i].ds_len; 1143 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1144 } 1145 } 1146 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1147 aep->ap_no_sg_elements, aep->ap_data_transfer_address, ac->ac_dataphys); 1148 } else { 1149 if (nsegments < 2) { 1150 ap->ap_no_sg_elements = 0; 1151 ap->ap_data_transfer_address = segs[0].ds_addr; 1152 } else { 1153 /* save s/g table information in passthrough */ 1154 ap->ap_no_sg_elements = nsegments; 1155 ap->ap_data_transfer_address = sc->amr_sgbusaddr + (ac->ac_slot * AMR_NSEG * sizeof(struct amr_sgentry)); 1156 /* populate s/g table (overwrites previous call which mapped the passthrough) */ 1157 for (i = 0; i < nsegments; i++, sg++) { 1158 sg->sg_addr = segs[i].ds_addr; 1159 sg->sg_count = segs[i].ds_len; 1160 debug(3, " %d: 0x%x/%d", i, sg->sg_addr, sg->sg_count); 1161 } 1162 } 1163 debug(3, "slot %d %d segments at 0x%x, passthrough at 0x%x", ac->ac_slot, 1164 ap->ap_no_sg_elements, ap->ap_data_transfer_address, ac->ac_dataphys); 1165 } 1166 } 1167 1168 static void 1169 amr_mapcmd(struct amr_command *ac) 1170 { 1171 struct amr_softc *sc = ac->ac_sc; 1172 1173 debug_called(3); 1174 1175 /* if the command involves data at all, and hasn't been mapped */ 1176 if (!(ac->ac_flags & AMR_CMD_MAPPED)) { 1177 1178 if (ac->ac_data != NULL) { 1179 /* map the data buffers into bus space and build the s/g list */ 1180 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_dmamap, ac->ac_data, ac->ac_length, 1181 amr_setup_dmamap, ac, 0); 1182 if (ac->ac_flags & AMR_CMD_DATAIN) 1183 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREREAD); 1184 if (ac->ac_flags & AMR_CMD_DATAOUT) 1185 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_PREWRITE); 1186 } 1187 1188 if (ac->ac_ccb_data != NULL) { 1189 bus_dmamap_load(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, ac->ac_ccb_data, ac->ac_ccb_length, 1190 amr_setup_ccbmap, ac, 0); 1191 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1192 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREREAD); 1193 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1194 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_PREWRITE); 1195 } 1196 ac->ac_flags |= AMR_CMD_MAPPED; 1197 } 1198 } 1199 1200 static void 1201 amr_unmapcmd(struct amr_command *ac) 1202 { 1203 struct amr_softc *sc = ac->ac_sc; 1204 1205 debug_called(3); 1206 1207 /* if the command involved data at all and was mapped */ 1208 if (ac->ac_flags & AMR_CMD_MAPPED) { 1209 1210 if (ac->ac_data != NULL) { 1211 if (ac->ac_flags & AMR_CMD_DATAIN) 1212 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTREAD); 1213 if (ac->ac_flags & AMR_CMD_DATAOUT) 1214 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE); 1215 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap); 1216 } 1217 1218 if (ac->ac_ccb_data != NULL) { 1219 if (ac->ac_flags & AMR_CMD_CCB_DATAIN) 1220 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTREAD); 1221 if (ac->ac_flags & AMR_CMD_CCB_DATAOUT) 1222 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_ccb_dmamap, BUS_DMASYNC_POSTWRITE); 1223 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_ccb_dmamap); 1224 } 1225 ac->ac_flags &= ~AMR_CMD_MAPPED; 1226 } 1227 } 1228 1229 /******************************************************************************** 1230 * Take a command and give it to the controller, returns 0 if successful, or 1231 * EBUSY if the command should be retried later. 1232 */ 1233 static int 1234 amr_start(struct amr_command *ac) 1235 { 1236 struct amr_softc *sc = ac->ac_sc; 1237 int done, i; 1238 1239 debug_called(3); 1240 1241 /* mark command as busy so that polling consumer can tell */ 1242 ac->ac_flags |= AMR_CMD_BUSY; 1243 1244 /* get a command slot (freed in amr_done) */ 1245 if (amr_getslot(ac)) 1246 return(EBUSY); 1247 1248 /* now we have a slot, we can map the command (unmapped in amr_complete) */ 1249 amr_mapcmd(ac); 1250 1251 /* mark the new mailbox we are going to copy in as busy */ 1252 ac->ac_mailbox.mb_busy = 1; 1253 1254 /* clear the poll/ack fields in the mailbox */ 1255 sc->amr_mailbox->mb_poll = 0; 1256 sc->amr_mailbox->mb_ack = 0; 1257 1258 /* 1259 * Save the slot number so that we can locate this command when complete. 1260 * Note that ident = 0 seems to be special, so we don't use it. 1261 */ 1262 ac->ac_mailbox.mb_ident = ac->ac_slot + 1; 1263 1264 /* 1265 * Spin waiting for the mailbox, give up after ~1 second. We expect the 1266 * controller to be able to handle our I/O. 1267 * 1268 * XXX perhaps we should wait for less time, and count on the deferred command 1269 * handling to deal with retries? 1270 */ 1271 debug(4, "wait for mailbox"); 1272 for (i = 10000, done = 0; (i > 0) && !done; i--) { 1273 crit_enter(); 1274 1275 /* is the mailbox free? */ 1276 if (sc->amr_mailbox->mb_busy == 0) { 1277 debug(4, "got mailbox"); 1278 sc->amr_mailbox64->mb64_segment = 0; 1279 bcopy(&ac->ac_mailbox, (void *)(uintptr_t)(volatile void *)sc->amr_mailbox, AMR_MBOX_CMDSIZE); 1280 done = 1; 1281 1282 /* not free, spin waiting */ 1283 } else { 1284 debug(4, "busy flag %x\n", sc->amr_mailbox->mb_busy); 1285 /* this is somewhat ugly */ 1286 DELAY(100); 1287 } 1288 crit_exit(); 1289 } 1290 1291 /* 1292 * Now give the command to the controller 1293 */ 1294 if (done) { 1295 if (sc->amr_submit_command(sc)) { 1296 /* the controller wasn't ready to take the command, forget that we tried to post it */ 1297 sc->amr_mailbox->mb_busy = 0; 1298 return(EBUSY); 1299 } 1300 debug(3, "posted command"); 1301 return(0); 1302 } 1303 1304 /* 1305 * The controller wouldn't take the command. Return the command as busy 1306 * so that it is retried later. 1307 */ 1308 return(EBUSY); 1309 } 1310 1311 /******************************************************************************** 1312 * Extract one or more completed commands from the controller (sc) 1313 * 1314 * Returns nonzero if any commands on the work queue were marked as completed. 1315 */ 1316 int 1317 amr_done(struct amr_softc *sc) 1318 { 1319 struct amr_command *ac; 1320 struct amr_mailbox mbox; 1321 int i, idx, result; 1322 1323 debug_called(3); 1324 1325 /* See if there's anything for us to do */ 1326 result = 0; 1327 1328 /* loop collecting completed commands */ 1329 for (;;) { 1330 /* poll for a completed command's identifier and status */ 1331 if (sc->amr_get_work(sc, &mbox)) { 1332 result = 1; 1333 1334 /* iterate over completed commands in this result */ 1335 for (i = 0; i < mbox.mb_nstatus; i++) { 1336 /* get pointer to busy command */ 1337 idx = mbox.mb_completed[i] - 1; 1338 ac = sc->amr_busycmd[idx]; 1339 1340 /* really a busy command? */ 1341 if (ac != NULL) { 1342 1343 /* pull the command from the busy index */ 1344 sc->amr_busycmd[idx] = NULL; 1345 sc->amr_busyslots--; 1346 1347 /* save status for later use */ 1348 ac->ac_status = mbox.mb_status; 1349 amr_enqueue_completed(ac); 1350 debug(3, "completed command with status %x", mbox.mb_status); 1351 } else { 1352 device_printf(sc->amr_dev, "bad slot %d completed\n", idx); 1353 } 1354 } 1355 } else { 1356 break; /* no work */ 1357 } 1358 } 1359 1360 /* if we've completed any commands, try posting some more */ 1361 if (result) 1362 amr_startio(sc); 1363 1364 /* handle completion and timeouts */ 1365 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 1366 if (sc->amr_state & AMR_STATE_INTEN) 1367 taskqueue_enqueue(taskqueue_swi, &sc->amr_task_complete); 1368 else 1369 #endif 1370 amr_complete(sc, 0); 1371 1372 return(result); 1373 } 1374 1375 /******************************************************************************** 1376 * Do completion processing on done commands on (sc) 1377 */ 1378 static void 1379 amr_complete(void *context, int pending) 1380 { 1381 struct amr_softc *sc = (struct amr_softc *)context; 1382 struct amr_command *ac; 1383 1384 debug_called(3); 1385 1386 /* pull completed commands off the queue */ 1387 for (;;) { 1388 ac = amr_dequeue_completed(sc); 1389 if (ac == NULL) 1390 break; 1391 1392 /* unmap the command's data buffer */ 1393 amr_unmapcmd(ac); 1394 1395 /* unbusy the command */ 1396 ac->ac_flags &= ~AMR_CMD_BUSY; 1397 1398 /* 1399 * Is there a completion handler? 1400 */ 1401 if (ac->ac_complete != NULL) { 1402 ac->ac_complete(ac); 1403 1404 /* 1405 * Is someone sleeping on this one? 1406 */ 1407 } else if (ac->ac_flags & AMR_CMD_SLEEP) { 1408 wakeup(ac); 1409 } 1410 1411 if(!sc->amr_busyslots) { 1412 wakeup(sc); 1413 } 1414 } 1415 } 1416 1417 /******************************************************************************** 1418 ******************************************************************************** 1419 Command Buffer Management 1420 ******************************************************************************** 1421 ********************************************************************************/ 1422 1423 /******************************************************************************** 1424 * Get a new command buffer. 1425 * 1426 * This may return NULL in low-memory cases. 1427 * 1428 * If possible, we recycle a command buffer that's been used before. 1429 */ 1430 struct amr_command * 1431 amr_alloccmd(struct amr_softc *sc) 1432 { 1433 struct amr_command *ac; 1434 1435 debug_called(3); 1436 1437 ac = amr_dequeue_free(sc); 1438 if (ac == NULL) { 1439 amr_alloccmd_cluster(sc); 1440 ac = amr_dequeue_free(sc); 1441 } 1442 if (ac == NULL) 1443 return(NULL); 1444 1445 /* clear out significant fields */ 1446 ac->ac_slot = 0; 1447 ac->ac_status = 0; 1448 bzero(&ac->ac_mailbox, sizeof(struct amr_mailbox)); 1449 ac->ac_flags = 0; 1450 ac->ac_bio = NULL; 1451 ac->ac_data = NULL; 1452 ac->ac_ccb_data = NULL; 1453 ac->ac_complete = NULL; 1454 return(ac); 1455 } 1456 1457 /******************************************************************************** 1458 * Release a command buffer for recycling. 1459 */ 1460 void 1461 amr_releasecmd(struct amr_command *ac) 1462 { 1463 debug_called(3); 1464 1465 amr_enqueue_free(ac); 1466 } 1467 1468 /******************************************************************************** 1469 * Allocate a new command cluster and initialise it. 1470 */ 1471 static void 1472 amr_alloccmd_cluster(struct amr_softc *sc) 1473 { 1474 struct amr_command_cluster *acc; 1475 struct amr_command *ac; 1476 int i; 1477 1478 acc = kmalloc(AMR_CMD_CLUSTERSIZE, M_DEVBUF, M_INTWAIT); 1479 crit_enter(); 1480 TAILQ_INSERT_TAIL(&sc->amr_cmd_clusters, acc, acc_link); 1481 crit_exit(); 1482 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) { 1483 ac = &acc->acc_command[i]; 1484 bzero(ac, sizeof(*ac)); 1485 ac->ac_sc = sc; 1486 if (!bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_dmamap) && 1487 !bus_dmamap_create(sc->amr_buffer_dmat, 0, &ac->ac_ccb_dmamap)) 1488 amr_releasecmd(ac); 1489 } 1490 } 1491 1492 /******************************************************************************** 1493 * Free a command cluster 1494 */ 1495 static void 1496 amr_freecmd_cluster(struct amr_command_cluster *acc) 1497 { 1498 struct amr_softc *sc = acc->acc_command[0].ac_sc; 1499 int i; 1500 1501 for (i = 0; i < AMR_CMD_CLUSTERCOUNT; i++) 1502 bus_dmamap_destroy(sc->amr_buffer_dmat, acc->acc_command[i].ac_dmamap); 1503 kfree(acc, M_DEVBUF); 1504 } 1505 1506 /******************************************************************************** 1507 ******************************************************************************** 1508 Interface-specific Shims 1509 ******************************************************************************** 1510 ********************************************************************************/ 1511 1512 /******************************************************************************** 1513 * Tell the controller that the mailbox contains a valid command 1514 */ 1515 static int 1516 amr_quartz_submit_command(struct amr_softc *sc) 1517 { 1518 debug_called(3); 1519 1520 if (AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT) 1521 return(EBUSY); 1522 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT); 1523 return(0); 1524 } 1525 1526 static int 1527 amr_std_submit_command(struct amr_softc *sc) 1528 { 1529 debug_called(3); 1530 1531 if (AMR_SGET_MBSTAT(sc) & AMR_SMBOX_BUSYFLAG) 1532 return(EBUSY); 1533 AMR_SPOST_COMMAND(sc); 1534 return(0); 1535 } 1536 1537 /******************************************************************************** 1538 * Claim any work that the controller has completed; acknowledge completion, 1539 * save details of the completion in (mbsave) 1540 */ 1541 static int 1542 amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1543 { 1544 int worked; 1545 u_int32_t outd; 1546 1547 debug_called(3); 1548 1549 worked = 0; 1550 crit_enter(); 1551 1552 /* work waiting for us? */ 1553 if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) { 1554 1555 /* save mailbox, which contains a list of completed commands */ 1556 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1557 1558 /* acknowledge interrupt */ 1559 AMR_QPUT_ODB(sc, AMR_QODB_READY); 1560 1561 /* acknowledge that we have the commands */ 1562 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_ACK); 1563 1564 #ifndef AMR_QUARTZ_GOFASTER 1565 /* 1566 * This waits for the controller to notice that we've taken the 1567 * command from it. It's very inefficient, and we shouldn't do it, 1568 * but if we remove this code, we stop completing commands under 1569 * load. 1570 * 1571 * Peter J says we shouldn't do this. The documentation says we 1572 * should. Who is right? 1573 */ 1574 while(AMR_QGET_IDB(sc) & AMR_QIDB_ACK) 1575 ; /* XXX aiee! what if it dies? */ 1576 #endif 1577 1578 worked = 1; /* got some work */ 1579 } 1580 1581 crit_exit(); 1582 return(worked); 1583 } 1584 1585 static int 1586 amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave) 1587 { 1588 int worked; 1589 u_int8_t istat; 1590 1591 debug_called(3); 1592 1593 worked = 0; 1594 crit_enter(); 1595 1596 /* check for valid interrupt status */ 1597 istat = AMR_SGET_ISTAT(sc); 1598 if ((istat & AMR_SINTR_VALID) != 0) { 1599 AMR_SPUT_ISTAT(sc, istat); /* ack interrupt status */ 1600 1601 /* save mailbox, which contains a list of completed commands */ 1602 bcopy((void *)(uintptr_t)(volatile void *)sc->amr_mailbox, mbsave, sizeof(*mbsave)); 1603 1604 AMR_SACK_INTERRUPT(sc); /* acknowledge we have the mailbox */ 1605 worked = 1; 1606 } 1607 1608 crit_exit(); 1609 return(worked); 1610 } 1611 1612 /******************************************************************************** 1613 * Notify the controller of the mailbox location. 1614 */ 1615 static void 1616 amr_std_attach_mailbox(struct amr_softc *sc) 1617 { 1618 1619 /* program the mailbox physical address */ 1620 AMR_SBYTE_SET(sc, AMR_SMBOX_0, sc->amr_mailboxphys & 0xff); 1621 AMR_SBYTE_SET(sc, AMR_SMBOX_1, (sc->amr_mailboxphys >> 8) & 0xff); 1622 AMR_SBYTE_SET(sc, AMR_SMBOX_2, (sc->amr_mailboxphys >> 16) & 0xff); 1623 AMR_SBYTE_SET(sc, AMR_SMBOX_3, (sc->amr_mailboxphys >> 24) & 0xff); 1624 AMR_SBYTE_SET(sc, AMR_SMBOX_ENABLE, AMR_SMBOX_ADDR); 1625 1626 /* clear any outstanding interrupt and enable interrupts proper */ 1627 AMR_SACK_INTERRUPT(sc); 1628 AMR_SENABLE_INTR(sc); 1629 } 1630 1631 #ifdef AMR_BOARD_INIT 1632 /******************************************************************************** 1633 * Initialise the controller 1634 */ 1635 static int 1636 amr_quartz_init(struct amr_softc *sc) 1637 { 1638 int status, ostatus; 1639 1640 device_printf(sc->amr_dev, "initial init status %x\n", AMR_QGET_INITSTATUS(sc)); 1641 1642 AMR_QRESET(sc); 1643 1644 ostatus = 0xff; 1645 while ((status = AMR_QGET_INITSTATUS(sc)) != AMR_QINIT_DONE) { 1646 if (status != ostatus) { 1647 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_qinit, status)); 1648 ostatus = status; 1649 } 1650 switch (status) { 1651 case AMR_QINIT_NOMEM: 1652 return(ENOMEM); 1653 1654 case AMR_QINIT_SCAN: 1655 /* XXX we could print channel/target here */ 1656 break; 1657 } 1658 } 1659 return(0); 1660 } 1661 1662 static int 1663 amr_std_init(struct amr_softc *sc) 1664 { 1665 int status, ostatus; 1666 1667 device_printf(sc->amr_dev, "initial init status %x\n", AMR_SGET_INITSTATUS(sc)); 1668 1669 AMR_SRESET(sc); 1670 1671 ostatus = 0xff; 1672 while ((status = AMR_SGET_INITSTATUS(sc)) != AMR_SINIT_DONE) { 1673 if (status != ostatus) { 1674 device_printf(sc->amr_dev, "(%x) %s\n", status, amr_describe_code(amr_table_sinit, status)); 1675 ostatus = status; 1676 } 1677 switch (status) { 1678 case AMR_SINIT_NOMEM: 1679 return(ENOMEM); 1680 1681 case AMR_SINIT_INPROG: 1682 /* XXX we could print channel/target here? */ 1683 break; 1684 } 1685 } 1686 return(0); 1687 } 1688 #endif 1689 1690 /******************************************************************************** 1691 ******************************************************************************** 1692 Debugging 1693 ******************************************************************************** 1694 ********************************************************************************/ 1695 1696 /******************************************************************************** 1697 * Identify the controller and print some information about it. 1698 */ 1699 static void 1700 amr_describe_controller(struct amr_softc *sc) 1701 { 1702 struct amr_prodinfo *ap; 1703 struct amr_enquiry *ae; 1704 char *prod; 1705 1706 /* 1707 * Try to get 40LD product info, which tells us what the card is labelled as. 1708 */ 1709 if ((ap = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) != NULL) { 1710 device_printf(sc->amr_dev, "<LSILogic %.80s> Firmware %.16s, BIOS %.16s, %dMB RAM\n", 1711 ap->ap_product, ap->ap_firmware, ap->ap_bios, 1712 ap->ap_memsize); 1713 1714 kfree(ap, M_DEVBUF); 1715 return; 1716 } 1717 1718 /* 1719 * Try 8LD extended ENQUIRY to get controller signature, and use lookup table. 1720 */ 1721 if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_EXT_ENQUIRY2, 0, 0)) != NULL) { 1722 prod = amr_describe_code(amr_table_adaptertype, ae->ae_signature); 1723 1724 } else if ((ae = (struct amr_enquiry *)amr_enquiry(sc, 2048, AMR_CMD_ENQUIRY, 0, 0)) != NULL) { 1725 1726 /* 1727 * Try to work it out based on the PCI signatures. 1728 */ 1729 switch (pci_get_device(sc->amr_dev)) { 1730 case 0x9010: 1731 prod = "Series 428"; 1732 break; 1733 case 0x9060: 1734 prod = "Series 434"; 1735 break; 1736 default: 1737 prod = "unknown controller"; 1738 break; 1739 } 1740 } else { 1741 prod = "unsupported controller"; 1742 } 1743 1744 /* 1745 * HP NetRaid controllers have a special encoding of the firmware and 1746 * BIOS versions. The AMI version seems to have it as strings whereas 1747 * the HP version does it with a leading uppercase character and two 1748 * binary numbers. 1749 */ 1750 1751 if(ae->ae_adapter.aa_firmware[2] >= 'A' && 1752 ae->ae_adapter.aa_firmware[2] <= 'Z' && 1753 ae->ae_adapter.aa_firmware[1] < ' ' && 1754 ae->ae_adapter.aa_firmware[0] < ' ' && 1755 ae->ae_adapter.aa_bios[2] >= 'A' && 1756 ae->ae_adapter.aa_bios[2] <= 'Z' && 1757 ae->ae_adapter.aa_bios[1] < ' ' && 1758 ae->ae_adapter.aa_bios[0] < ' ') { 1759 1760 /* this looks like we have an HP NetRaid version of the MegaRaid */ 1761 1762 if(ae->ae_signature == AMR_SIG_438) { 1763 /* the AMI 438 is a NetRaid 3si in HP-land */ 1764 prod = "HP NetRaid 3si"; 1765 } 1766 1767 device_printf(sc->amr_dev, "<%s> Firmware %c.%02d.%02d, BIOS %c.%02d.%02d, %dMB RAM\n", 1768 prod, ae->ae_adapter.aa_firmware[2], 1769 ae->ae_adapter.aa_firmware[1], 1770 ae->ae_adapter.aa_firmware[0], 1771 ae->ae_adapter.aa_bios[2], 1772 ae->ae_adapter.aa_bios[1], 1773 ae->ae_adapter.aa_bios[0], 1774 ae->ae_adapter.aa_memorysize); 1775 } else { 1776 device_printf(sc->amr_dev, "<%s> Firmware %.4s, BIOS %.4s, %dMB RAM\n", 1777 prod, ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios, 1778 ae->ae_adapter.aa_memorysize); 1779 } 1780 kfree(ae, M_DEVBUF); 1781 } 1782 1783 int 1784 amr_dump_blocks(struct amr_softc *sc, int unit, u_int64_t lba, void *data, int blks) 1785 { 1786 1787 struct amr_command *ac; 1788 int error = 1; 1789 1790 debug_called(1); 1791 1792 sc->amr_state &= ~AMR_STATE_INTEN; 1793 1794 /* get ourselves a command buffer */ 1795 if ((ac = amr_alloccmd(sc)) == NULL) 1796 goto out; 1797 /* set command flags */ 1798 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT; 1799 1800 /* point the command at our data */ 1801 ac->ac_data = data; 1802 ac->ac_length = blks * AMR_BLKSIZE; 1803 1804 /* build the command proper */ 1805 ac->ac_mailbox.mb_command = AMR_CMD_LWRITE; 1806 ac->ac_mailbox.mb_blkcount = blks; 1807 ac->ac_mailbox.mb_lba = lba; 1808 ac->ac_mailbox.mb_drive = unit; 1809 1810 /* can't assume that interrupts are going to work here, so play it safe */ 1811 if (sc->amr_poll_command(ac)) 1812 goto out; 1813 error = ac->ac_status; 1814 1815 out: 1816 if (ac != NULL) 1817 amr_releasecmd(ac); 1818 1819 sc->amr_state |= AMR_STATE_INTEN; 1820 1821 return (error); 1822 } 1823 1824 1825 #ifdef AMR_DEBUG 1826 /******************************************************************************** 1827 * Print the command (ac) in human-readable format 1828 */ 1829 #if 0 1830 static void 1831 amr_printcommand(struct amr_command *ac) 1832 { 1833 struct amr_softc *sc = ac->ac_sc; 1834 struct amr_sgentry *sg; 1835 int i; 1836 1837 device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n", 1838 ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive); 1839 device_printf(sc->amr_dev, "blkcount %d lba %d\n", 1840 ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba); 1841 device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length); 1842 device_printf(sc->amr_dev, "sg physaddr %08x nsg %d\n", 1843 ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem); 1844 device_printf(sc->amr_dev, "ccb %p bio %p\n", ac->ac_ccb_data, ac->ac_bio); 1845 1846 /* get base address of s/g table */ 1847 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG); 1848 for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++) 1849 device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count); 1850 } 1851 #endif 1852 #endif 1853